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Developing and Validating a Bioelectrical Impedance Index for Rapid Detection of Woody Breast Fillets

Institution: Auburn University

Principal Investigator: Amit Morey, PhD
Auburn University
Department of Poultry Science
21 Poultry Science Building
Auburn, AL 36849

The bioelectrical properties of breast fillets are significantly affected by woody breast myopathy and hence can be used to detect woody breast. The project was aimed at developing and validating a hand-held bioelectrical impedance analysis (BIA) tool for rapid detection of woody breast fillets. Woody breast fillets affected to varying degrees of severity were analyzed using the bioelectrical impedance analysis, proximate composition (protein, moisture and fat) and texture analysis. BIA measurements were taken at three different locations on the fillet to determine if there were differences in the electrical properties due to position. The BIA was then used to determine the accuracy of detection of the woody breast fillets by plant personnel.

Although there were no corresponding significant differences in moisture content or moisture lost during cooking, total body water was significantly higher in severely affected breast fillets than in normal breast fillets. This may explain the differences seen in electrical properties of severely affected woody breast fillets. BIA can be successfully used to detect normal fillets and severely affected fillets but does not differentiate between mildly and moderately affected fillets. When the BIA tool was used to evaluate fillets, which had been sorted by plant personnel into severely affected fillets and normal breast fillets, it indicated an accuracy of 89.80% by plant personnel in identifying the severely affected woody breast fillets. Approximately 10% of woody breast fillets were categorized as normal by plant personnel.

The bioelectrical impedance analysis method can be used effectively to differentiate between normal and severely affected woody breast meat. Quality assurance personnel can use it as an efficient hand-held system to ensure the quality of meat being sent to the customers. This method can reduce human error in sorting breast fillets. Companies can use this device to determine the percentage of normal and severely affected woody breast fillets and track trends by season, farm or management practices. Genetics companies can potentially use this technology to help identify woody breast in the genetic selection process.

Rethink biosecurity

uick facts

Biosecurity is key to preventing and reducing disease risk, including avian influenza.

  • Enforce biosecurity basics including isolation, flow control, sanitation and cleaning and disinfection.

  • Keep biosecurity practices strict, accessible and simple.

  • Know common biosecurity breaks.

two people putting on protective boots before entering a barn

Highly Pathogenic Avian Influenza (HPAI) in Minnesota and the Midwest caused great loss to commercial poultry farms in 2015 and 2016. HPAI represents a change in what avian producers had come to expect, given spring introductions of avian influenza are usually rare. Biosecurity is key to preventing or reducing the extent of possible virus introduction.

Biosecurity basics

  • Isolation

  • Flow control

  • Sanitation

  • Cleaning and disinfection

HPAI risk usually occur from indirect or direct contact with virus contaminated

  • People

  • Equipment

  • Wild birds

Line of separation

With introductions into single barns on multi-barn sites, barn biosecurity is key. You need a line of separation around each barn in addition to the separation area for the farm unit. Lines of separation define clean areas from dirty areas.

  • Always assume the area around the barn is contaminated.

  • Avoid bringing outside contamination inside the barn.

  • Have a secure entry of people and equipment to the barn.

Did you know?

Poultry farm survey

A survey of poultry farms by Racicot and coworkers, 2011, 2012 using video and audits to track compliance revealed:

  1. Few facilities posted barn entry protocols.

  2. Barn entry protocols for farm personnel barn weren’t as strict as visitor protocol.

  3. While most farms used some inside/outside separation when entering the barn, few took added precautions such as washing hands and changing to barn specific clothing.

  4. People followed entry protocols less closely for short visits.

  5. Defining clean and dirty areas at entry influenced protocol compliance. Compliance was less if a physical separation of these areas wasn’t present.

  6. Some unidentified individuals were videotaped in the barns.

  7. Most biosecurity errors involved cross-contamination of clean areas (barn) and contaminated (outside) at entry.

Danish Entry

The swine industry moved to an entry system called the Danish Entry to overcome problems with swine viruses. The keys to the Danish entry system are:

  • A biosecure entrance to the farm

  • The entrance area has separate clean and dirty areas (line of separation)

  • Upon entry in the “dirty” area:

    • People remove their outer clothing and footwear

    • Wash and disinfect hands

    • Move to a clean area where clean protective clothing, such as boots and coveralls, are provided (boots should be put on before coveralls).

  • People complete the protocol in reverse when exiting the building.

Common biosecurity breaks

  • I am only going to spend a few minutes in the barn so I don’t need to put on barn specific clothing.

  • I have an emergency and need to fix a fan, feed line etc. and the tools are in the other barn. I will just run over there quickly and bring them back.

  • I skipped putting on boots, coveralls and/or using hand sanitizer because the supplies weren’t available.

  • I don’t want to give up my lucky ball cap. It goes with me everywhere.

  • The door to the barn is locked and I have an armful of supplies and can’t unlock the door. So I put the boxes on the ground and then unlock the door.

  • I leave the entryway door open for convenience while I’m working in the barn.

  • I was hunting and decided to stop by the farm and see how the flock was doing.

  • I’ll set the dead birds outside the door and deal with them later.

  • Smith is going to work for me over the weekend. Ummm…I think they know the biosecurity protocols?

Avoiding biosecurity errors – barn entry

  • Post barn entry/exit protocols that provides lines of separation.

  • Provide barn-specific clothing, supplies and equipment to reduce traffic between barns and other farm areas.

  • Clean and disinfect anything that enters the barn.

  • Review protocols with farm staff and get input from staff and others on how to improve.

Sally Noll, Extension poultry scientist and Carol Cardona Extension specialist, poultry virologist

Western Fair Association, PIC Sign Long Term Agreement

    The Western Fair Association is pleased to announce a new agreement has been signed with the Poultry Industry Council of Ontario (PIC). Together we will continue to produce The National Poultry Show – the largest of its kind in Canada – for years to come.

    “We are very proud to work with PIC and partner on this event that delivers an engaging forum for the entire Poultry Industry to get together and share ideas that will continue to lead to exciting innovations for this sector” stated Western Fair Association CEO Reg Ash. “We have a very high level of respect for the excellent work that PIC delivers year over year to its Members and the Industry.”

    The National Poultry Show is a major buying and business show which has been bringing together farmers for decades. It features more than 145,000 square feet of exhibitor space dedicated to showcasing the latest products, services, professional development, research and innovation in the feather industry.

    WFA and PIC are committed to working together to expand this “can’t miss” feather industry event and they are looking to the future with a progressive, agriculturally focused strategic vision. Both parties are committed to work together to create value for our customers.

    The goodwill and support from Industry, Boards, exhibitors and sponsors has been the single most important supporting factor in the growth and evolution of this important agri-business event.

    The 2020 National Poultry Show will be held on April 8th and 9th at the Western Fair District’s Agriplex.

    Marel celebrates 75 years of business in Gainesville

    A long history of machine manufacturing

    Marel celebrates 75 years of business in Gainesville

    On September 26, 2019, Marel celebrated 75 years of operations at its location in Gainesville, Georgia. To mark the occasion, the company celebrated with a luncheon where Georgia Agricultural Commissioner Gary Black and Georgia State Senator Butch Miller along with Executive Management from Marel spoke to the audience.

    Over 370 people attended the celebration, which opened with remarks by Folkert Bölger and Roger Claessens, both Executive Vice Presidents (EVP) of Marel, who took the opportunity to thank past and present employees for their dedication and hard work carried out in partnership with our customers to transform food processing. Claessens touched on the many innovations that have changed the landscape of the poultry industry. Following that, Commissioner Black addressed the crowd thanking Marel employees for their dedication and charging us to remember the importance we play in Georgia agricultural and helping the family farm on a daily bases. Senator Miller continued the celebration by thanking Marel for the affects we have had on the Gainesville community and poultry industry on a global level.

    From Gainesville Machine Company to Marel

    In 1944, Gainesville Machine Company was established as a metal working job shop, specializing in welding fabrication and machining. A major milestone for the company was in 1960 with the development of the first non-reverse defeathering machine. This development allowed processors to increase line speeds from 200 birds per hour to 12,000. By 1973, the company needed more space, so Marel moved operations to the current location at Airport Parkway. In 1975, Stork Acquisitions Corporation acquired the company and in 2008, Marel Food Systems acquired Stork Food Systems.

    Key facility

    Today, Gainesville is Marel’s key manufacturing facility operating in North America and part of Marel’s global supply chain, which spans 13 manufacturing sites in total. There are 380 full-time employees based out of Gainesville who work in a diverse range of functions including specialized and technical manufacturing jobs, marketing and sales, service, engineering, finance and more. Not only do we manufacture advanced food processing solutions, we also store and ship all spare parts orders from this location to our customers in North and South America. The poultry industry remains the largest focus of our business in Gainesville; however, we also manufacture and service equipment for the meat industry.

    High-tech innovations

    In the US, Marel is active in poultry, meat, fish and further processing. There are over 800 employees throughout North America and we have operations in four locations: Kansas City, Kansas; Des Moines, Iowa; Gainesville, Georgia and Seattle, Washington. We not only sell new equipment to processors, we also help service equipment and keep it running at the highest standards possible and we also develop new equipment. In the early days, primary processing equipment was designed and developed. More recently, we have expanded our offering to include secondary and further processing solutions. With Georgia being the largest producer of poultry meat in the US, the Gainesville location works with many top poultry processors to continually develop new high-tech innovations that help processors increase yields and efficiency as well as product quality and food safety.

    Poultry Rations and Feeding Methods

    Publication No. 199;
    June, 1945

    MANITOBA DEPARTMENT OF AGRICULTURE AND IMMIGRATION WINNIPEG, MANITOBA

    POULTRY RATIONS and Feeding Methods

    BEING A REPRINT from Publication No. 198

    POULTRY SECTION OF MANITOBA FEED BOARD

    Professor J. R. Cavers, The University of Manitoba. A.C. McCulloch, District Poultry Products Inspector, Dominion Government. D.C. Foster, Poultry Specialist, Extension Service.

    By authority of Hon. D.L. Campbell, Minister of Agriculture and Immigration.

    POULTRY FEEDING

    Poultry production in Manitoba centres largely on farm where ample supplies of grain are grown. This can and should lead to low-cost, efficient production. Grain in some form may comprise 75% to 90% of a well-balanced poultry ration. Frequently, however, a full grain bin means careless or indifferent feeding because no attempt is made to balance this ration properly. One must include all the essential nutrients in order to obtain a profitable rate of growth or egg production. The poultry raiser who must buy all his feed knows this full well, and in addition he aims to sell only high quality products; otherwise he cannot continue long in business. The purpose of this publication is to encourage the efficient use of feed on Manitoba farms where poultry and eggs are being produced. It is the poultry keeper’s responsibility to market well-finished birds, and eggs of the best quality, in order to secure maximum returns in relation to feed and other costs.

    ESSENTIAL NUTRIENTS

    The following six classes of nutrients are essential to life, growth, production and reproduction in all classes of poultry. Nature supplies most of these essentials in the form of pasture, bugs and insects, gravel, grains and seeds, sunshine, etc. Indoor feeding of young or adult poultry, places full responsibility on the attendant to supply these same requirements in some form or another and in adequate but not excessive amounts.

      1. WATER: Birds can live longer without food than without water. Lack of a consistant supply of fresh water hinders the growth of young poultry; it leads to low egg production and early moulting in the laying flock.
      2. PROTEIN: This is usually the most expensive feed material, but the one most likely to bring profitable results if properly used. Protein from animal sources – milk, liver, fish scraps, meat or meat meal – is more effective in promoting growth and egg production, than protein from most vegetable sources. Grains alone are entirely inadequate in amount and kind of protein. Excess protein has a forcing effect which may be detrimental to poultry of any age.
      3. CARBOHYDRATES: These are the starchy materials in grains and grain products. Only a starved flock will lack for carbohydrates. They supply fuel and energy, the excess going to form fat in the body or egg.
      4. FATS: Some fat is present in practically all feed materials. An excess of fat from fish oil or meat and fish products may cause digestive upset in birds, and lead to such disorders as fatty degeneration and “crazy chick disease”.
      5. MINERALS: Calcium carbonate (from limestone or gravel, clam or oyster shells, bone, etc) in the presence of Vitamin D, forms most of the egg shell. Calcium and phosphorous make up the major part of bone; but excess phosphorous (from bone materials) may immobilize the manganese in the diet, leading to crooked bones and slipped tendons in chicks and poults. Salt supplies some essential minerals. Green feed contains small amounts of certain highly important minerals.
      6. VITAMINS: The naturally speedy growth of young poultry soon reveals any vitamin deficiencies in their rations; hatching of eggs is a critical test of the vitamin content of a breeder diet. Most commonly lacking in Manitoba diets are:

    (1) Vitamin A (from green feed, yellow corn and fish oils). Vitamin A protects against colds and infections. (2) Vitamin D (in marine fish oils and synthetic products, or formed in body when exposed to ultra-violet rays of sun). Vitamin D aids in laying down of mineral in shell or bone, and in preventing leg weakness and rickets. (3) Riboflavin (in milk, liver, yeast, green feed, synthetic riboflavin, etc.). Riboflavin promotes the growth of chicks and poults, both in the egg and after hatching; hence it is one of the most important factors in hatchability. Riboflavin prevents nutritional or curled-toe paralysis in young chicks.

    FEEDS

    Wheat usually is one of the best grains for poultry feeding, although a proportion of course grains in some form should always be included in the ration, along with wheat. In seasons of rust or frost, when wheat is shrunken, more should be ground and fed in mashes and less in the scratch feed. Either hard spring or Durum wheat may be used.

    Oats vary considerably in feeding value, due to difference in hull. They can be fed whole as part of a scratch feed, or in mashes in the crushed, rolled, or finely ground form. If light, sift out the hulls; poor quality oats frequently have so much hull as to be of little use for poultry feed.

    Barley will work well as part of the scratch feed and in mashes in crushed, rolled, or finely ground form. Ordinarily it is not quite as palatable as wheat or oats; still in seasons when these two grains are of poor quality and the barley is fair or good, more can fed in the different forms, or even as boiled or soaked barley, with very good results.

    Corn is a very desirable grain fed whole, cracked or ground. Ripe corn on the cob may be fed to hens and turkeys. Shelled corn may be used with other grains as scratch feed. Corn chop could be included in any of the dry mash rations listed in this circular. The corn, if not thoroughly dried, should be mixed with the other chop in the mash immediately after grinding.

    Millet (proso or hog millet), where grown, may be used to good advantage in growing, laying, and fattening rations. Millet may compromise up to one-third of the whole grain fed, and up to one-third of the chop mixture in dry mashes.

    Rye is not as palatable as wheat, oats or barley, but can be fed in limited quantities as a scratch feed or in mashes along with two or more of the other grains. In large quantities it is likely to cause digestive disorders.

    Flax is high in protein and fat. A small amount may be fed in the whole or ground form in mashes during the moulting season and fall and winter months. Linseed oil cake meal may also be used.

    By-products of grain (such as wheat middlings, shorts, bran, barley meal, oat flour, oat middlings, and oat feed) have a place in poultry feeding, especially where feed must be bought. They may be higher in price than the whole grain, and if used should be fed for a specific purpose, such bran, shorts or middlings in growing and laying rations, and oat flour, oat middlings, oat feed, or barley meal in fattening rations.

    Skimmilk and Buttermilk are Excellent for all Classes of Poultry but especially valuable for young chicks, laying hens and fattening birds. Milk supplies the vitamin riboflavin which is indispensible to high hatching quality in eggs. As a desirable protein supplement, milk undoubtedly heads the list.

    “Concentrates” and “Balancers” are especially prepared supplements put up by feed companies. They should be added to home-grown chopped grains in proportions recommended by the manufacturers.

    Fish Oils (cod liver oil, pilchard oil, etc.) are used in chick rations, in winter laying rations and in rations for producing eggs for hatching, as a source of Vitamins A and D when the supply of green pasture and direct sunshine is limited or lacking. Standard fish oils for poultry should contain 1,250 units or more of Vitamin A, and 200 A.O.A.C. units or more of Vitamin D, per gram. If fed in dry mash the oil should be mixed first with a small quantity of ground wheat.

    RATIONS FOR GROWING CHICKENS

    STARTER RATIONS:

    Young chicks require a diet rich in protein and certain vitamins, with a carefully balanced mineral content. Two pounds of chick starter dry mash will feed one chick up to about six weeks of age. After that, in the case of the birds to be reared to maturity, a cheaper ration with increasing amounts of whole grain may be used. Birds to be killed as broilers, however, should be kept on a more concentrated diet to promote the rapid growth essential to profit in broiler raising.

    While one may mix chick starter at home, the simplest plan is to purchase 200 pounds of commercial chick starter mash for each 100 chicks. Choose a brand that is flaky or mealy, avoiding the less palatable finely ground mixtures that tend to paste inside the chick’s mouth. The dry mash should be stored in a cool dry place and fed fresh daily.

    Start feeding the chicks as soon as they want to eat. Place dry mash on clean egg-case flats (cup type) or on clean cardboard, at several points around the brooder, with possibly a little cracked wheat or chick scratch grain sprinkled over the mash. After two or three days, when all the chicks have learned to eat, place the dry mash in self-feeders. The usual method is to keep dry mash continuously before the birds, though some people prefer to lift the feeders for an hour at a time during each half day.

    Provide a constant supply of fresh drinking water in clean chick fountains. Place hard insoluble grit or fine gravel in pans or hoppers separate from the feed. In addition to the dry mash a little cracked wheat may be fed at three weeks, and a little whole wheat after four weeks.

    Chick Starter No. 1 lbs. Turkey Starter lbs.
    Coursely Ground Wheat 30.0 25.0
    Coursely Ground Oat Grouts 18.0 10.0
    Medium Ground Barley 15.0 15.0
    Finely Ground Oats 10.0 10.0
    Wheat Bran 5.0 5.0
    Meat Meal (60% Protein) 5.0 10.0
    Fish Meal (67% Protein) 5.0 10.0
    Milk Powder 3.0 4.0
    Alfalfa Leaf Meal 5.0 7.0
    Linseed Oil Cake Meal 1.5 1.5
    Fine Oyster Shell or Limestone 1.5 1.0
    Fine Iodized Salt 0.5 0.5
    Fish Oil (200 D) 0.5 1.0
    Manganese Sulphate (see below)
    100.0 100.0

    To each ton of chick or turkey starter mash, add 4 ounces of powdered Manganese Sulphate, pre-mixed in the salt. Thoroughly mix the fish oil into part of the wheat chop until no lumps are left. Add each ingredient in a thin even layer over the previous one, starting with the ingredients in the greatest amount and ending with the smaller amounts on top. Shovel from the bottom of the pile, turning the mix three times.

    Chick Starter No. 2
    Suitable if chicks will have good pasture at 2 or 3 weeks of age
    Coursely Ground Wheat 40 lbs. Milk to drink
    Oat Chop (sift out coarse hulls) 25 lbs.
    Barley Chop (sift out coarse hulls) 25 lbs. Alfalfa or Clover chaff or other green feed, until chicks are on pasture
    Meat Meal (60% Protein) 10 lbs.
    Fine Iodized Salt ½ lb. Fine Gravel and Oyster Shell in separate pans or hoppers
    Fish Oil (200 D) ½ lb.

      GROWING RATIONS:

    After the chicks are five to six weeks old they may be changed gradually to a coarser and cheaper mixture, e.g. ½ starter mash and ½ growing mash during the sixth and seventh week.

    Growing Mash (in self-feeders)
    Ground Wheat 100 lbs.   Oyster shell and gravel, or limetone grit, in separate pans or feeders
    Ground Barley 100 lbs.
    Ground Oats 75 lbs.
    Meat Meal 25 lbs.
    Fine Salt 3 lbs.

    Whole Grains (in self-feeders)

    (Whole Wheat, Whole Oats, and other available Grains)

    To promote the growth of late hatched pullets or of market poultry, give milk to drink as well as water. Milk may be used to replace the meat meal in the grower mash, if a separate hopper of bone meal is provided. Reduce or omit meat meal or milk if pullets are maturing too rapidly. If pasture is dried up or lacking, add 20 pounds of alfalfa meal and 2 pound of 200 D fish oil to the above growing mash.

    PASTURE:

    A special effort should be made to provide tender green pasture throughout the growing period. Fall rye sown in the fall, provides early pasture for early hatched chicks. One acre sown in the spring to a mixture of 2 bushels of fall rye and ½ bushel of oats, will carry 300 to 400 chicks through most of the season. Or a thick seeding of oats may be used on the start; then after alfalfa or clover hay is cut, the colony house or shelter may be move there to give the flock clean ground and fresh green feed. Keep pasture short by grazing or cutting. A few rows of corn may be planted to give shade and shelter.

    Pasture lowers the cost of growing poultry. It reduces the amount of mash and grain consumed, and allows one to use a cheap and simple growing ration. Good pasture helps to grow sleek smoothly-feathered vigorous pullets, enabling them to withstand the strain of heavy egg production the following winter.

    RATIONS FOR LAYING HENS

    Egg production, to be profitable, must continue at a reasonably high level through most of the year. Hens turned loose to forage in the spring and only grain fed, soon lay themselves thin, cease laying, moult and spend the summer and fall growing new feathers; moreover any eggs they lay are likely to be of “barnyard” quality and low grade. Laying hens require some form of protein supplement in addition to grain and chop. Similarly they need more vitamin and mineral materials than grains contain. Most poultry raisers recognize the importance of the diet in winter egg production. Generous summer feeding is equally important, since profit depends upon a steady production of eggs. A farm supplied with wheat and coarse grains, well-cured alfalfa or clover hay, and plenty of skimmilk, provides practically everything required in the laying diet. Some form of Vitamin D supplement is needed for winter or indoor conditions. Hens aren’t likely to drink enough milk in cold weather to supply their protein requirement; this may be met by the use of laying concentrates or balancers, meat meal, fish meal, cooked meat or fish, etc. In any case the flock should have an ample daily feeding of alfalfa or clover leaves, or else limited pasture. Laying hens require a constant supply of oyster shells or limestone grit; also bone meal in a separate hopper when milk is used as the main protein supplement. Provide fresh clean drinking water at all times, or as soon as the daily amount of milk is consumed.

    FALL CARE OF PULLETS

    Generally speaking pullets starting to lay in the fall should be placed in winter quarters and fed a laying ration before egg production reaches 10 per cent. Those housed in August or September require a fenced run with good pasture, or plenty of feed in some form, to offset the change from free range.

    RATIONS FOR LAYING AND BREEDING FLOCKS
    Breeder or Winter Laying 1. Milk to drink Summer Laying Ration 2. Milk to drink Breeder Rations (Dec. – June) (Using commercial breeder concentrate mixture) Winter Laying Rations (Using commercial laying concentrate mixture)
    3. Breeder Concentrate 4. Milk plus concentrate 5. Laying Concentrate 6. Milk plus Concentrate
    I.  DRY MASH MIXTURE (in self feeder)
    Ground Wheat 100 lbs. 100 lbs. Concentrate with chop, per manufacturer’s instructions Reduce amount of concentrate to ½ mfgr.’s instructions Concentrate with chop, per manufacturer’s instructions Reduce amount of concentrate to ½ mfgr.’s instructions
    Ground Barley 100 lbs. 100 lbs.
    Ground Oats 75 lbs. 75 lbs.
    Meal Meal (50%) 10 lbs. 15 lbs. —- —- —- —-
    Fish Meal 10 lbs. —- —- —- —- —-
    Fine Salt 3 lbs. 3 lbs. —- ½% of mash —- ½% of mash
    II.   SUPPLEMENTS (fed daily) (per 100 hens)
    Alfalfa or Clover Daily Daily* Daily Daily Daily Daily
    Skim-milk to drink 2 gals. 3 gals. —- 2 gals. —- 2 gals.
    Fish Oil (200 D) 1/3 cup 2 tblsp.* 2 tblsp. ¼ cup 2 tblsp*. ¼ cup*
    III.   WHOLE GRAIN (fed daily)
    100 Pullets (A.M.) 4 lbs. —- 4 lbs. 4 lbs. 4 lbs. 4 lbs.
    100 Pullets (P.M.) 10 lbs. 10 lbs. 10 lbs. 10 lbs. 10 lbs. 10 lbs.
    100 Yearlings (P.M.) 10 lbs 10 lbs. 10 lbs. 10 lbs. 10 lbs. 10 lbs.
    *Omit in summer if birds have pasture (also omit morning whole grain in summer to encourage dry mash consumption).
    IV. MINERALS: A constant supply of oyster shell and gravel, or limestone grit, in separate hoppers. Also – for rations 1, 2, 4 and 6 above –  place bone meal in a separate hopper.
    V. MOIST MASH (if fed): For 100 hens take 4 pounds of dry mash and moisten to a crumbly state with milk or water, first adding the fish oil to the liquid. Once started, it is advisable to continue feeding daily, in addition to the dry mash, throughout the laying season. (If moist mash is not fed, mix the fish oil with the whole grain and feed in a trough.)
    WHOLE GRAIN: Various mixture such as 3 bu. wheat, 2 bu. oats, 1 bu. barley may be used.
    GREEN FEEDS: Well-cured alfalfa or clover leaves or chaff are excellent. Carrots, cabbage, beets or mangels may be fed in moderation (not over 5 lbs. per day for 100 breeding hens).

    Pullets should be housed separately from yearling or older birds. Keep pullets gaining in body weight each month of the fall and until about March. If they lose weight, neck moult or possibly a complete moult will follow, with consequent loss in egg production. To maintain body weight, feed in troughs all the whole grain the birds will eat in the evening, and about half that amount the next morning in dry litter or troughs; keep fresh dry laying mash before them, daily; and if necessary feed moist mash at noon. Excessively high production from pullets in fall and winter may lead to numerous double-yolked and shell-less eggs, feather-picking, prolapse, and cannibalism, as well as loss in weight and moulting. If production reaches 60 per cent, feed more whole oats, putting the oats in a trough before the birds all the time, in addition to the regular feed.

    SOAKED ALFALFA FOR WINTER GREEN FEED

    For 100 hens take 3 pounds of good quality second-cut alfalfa hay, run through a cutting box to one inch lengths, and soak overnight in a barrel of fresh water. Drain until noon, and feed in troughs. This is a means of increasing the amount of green feed consumed by laying and breeding flocks while confined indoors. In some cases the feeding of soaked alfalfa serves to prevent or check feather picking and cannibalism.

    RATIONS FOR BREEDING STOCK

    A ration suitable for egg production, is not necessarily satisfactory for the breeding flock. To obtain high hatchability, the riboflavin content of the feed must be greatly increased. This is provided in milk, or specially prepared commercial breeder concentrates or balancers. Extra Vitamin D is required over the amount in laying rations. See Ration No. 1, 3 and 4 (page 29) for suggested amounts of milk, fish, oil, etc. Note that the daily feeding of clover or alfalfa leaves is recommended in all cases. Any change in feed must be made gradually. The flock should receive the breeder diet a full six weeks or two months prior to saving the first eggs for hatching.

    FATTENING RATIONS

    Fattening of poultry is likely to be disappointing unless the birds are in good flesh to begin with. Flesh is produced during the growing season, and if lost through improper or insufficient feeding it is difficult to regain. This means that market poultry should be well fed all summer. The cockerels might well be enclosed in a large yard to separate them from the pullets. Give the cockerels one feed of moistened mash daily in addition to the growing mash and whole grain. Provide plenty of green or succulent feed during the growing season; also plenty of milk or water to drink.

    Allow two to three weeks for the final fattening period. Wheat, oats and barely are satisfactory feeds for fattening.

    Ration No. 1 Ration No. 2 Ration No. 3
    Ground Wheat 50 lbs. 100 lbs. 50 lbs.
    Ground Oats 100 lbs. 100 lbs. 50 lbs.
    Ground Barley 50 lbs. 100 lbs. 100 lbs.
    Fine Salt 2 lbs. 3 lbs. 2 lbs.

    Grind all the grains as finely as possible. Use No. 3 C.W. oats and barley; if lower grade sift out hulls.

    For crate-fattening, mix mash with skim-milk or buttermilk to make a batter that will pour nicely. If milk is not available, add 7 pounds meat meal to each 100 pounds of grain and use water to make the batter. Feed lightly at the start, then all the birds will eat twice a day. Give water to drink after each feeding. For pen fattening feed wet mash two or three times daily. Boiled potatoes may be added to the wet mash.

    The liberal use of skim-milk or buttermilk in fattening rations will tend to produce chickens that can be classed as “milk-fed.”

    Whether fattening in crates or pens, allow twenty minutes for wet mash feeding, and do not leave any in the troughs from one meal to the next.

    TURKEY FEEDING

    The feeding of turkeys differs but little from that of chickens and laying hens. Young turkeys may be a little more exacting in their requirements than are chicks, and the growing turkeys and the adults will forage over a greater area than do chickens; otherwise there is little difference. Turkey poults must be taught to eat right on the start – failure to do this is a common cause of loss in brooder turkeys. Any lack in the ration will show more quickly in little turkeys than in chicks. This is especially true in the earlier hatches that are brooded indoors for the first few weeks, reared where there is a lack of green feed and sunshine.

    BREEDING TURKEY RATION

    Early in February the breeding birds should be given a good laying mash such as described for breeding hens in this bulletin. This involves the generous use of milk, clover or alfalfa leaves and cod live oil. Care should be taken not to let the breeders become over-fat prior to the breeding season.

    TURKEY STARTER

    Use commercial turkey starter, or the turkey starter mash listed on page 27, or chick starter No. 2 with doubled amounts of meat meal and fish oil. Use either liquid milk or dried milk as recommended. If the baby turkeys do not eat the dry feed readily, it is advisable on the start to moisten small amounts of the starter mash, using sour milk or eggs for moistening. The eggs should be boiled for 20 minutes and run through a meat chopper. These moistened feeds are given several times daily in addition to the dry starter mash which is kept before the birds at all times.

    Provide plenty of green food in the form of finely cut onion tops, dandelions and green alfalfa. Sprinkle the cut green feed on top of the dry mash. Provide a supply of clean gravel and oyster shell in open hoppers from the start.

    When turkeys are about two months old and on good pasture gradually change to growing mash similar to the one described for chicks. Also give sour milk to drink and hard grains in open hoppers. An extra feed daily of moist mash will stimulate growth. If milk is not available add an extra five pounds of meat meal to each 100 pounds of growing mash.

    Move feed troughs and drinking dishes daily to clean ground, as a precaution against blackhead, intestinal worms, and other infection. Also endeavour to prevent young turkeys from mingling with the chicken flock.

    There is always a danger of under-feeding growing turkeys because of their habit of roaming. Unless they get an extra feed at night when they return to the buildings they are likely to develop a framework with but very little fleshing. This is likely to make later fattening work very disappointing.

    In fattening, restrict the range. As turkeys fatten, they roam less. In some cases they me be confined to a yard or building. They should never be put into fattening crates.

    Continue hopper feeding both hard grain and dry mash and give one feed a day of soft crumbly mash, adding boiled potatoes, turnips or carrots. Give milk to drink, if available. Whole grains, boiled or soaked, adding the dry mash amd boiled vegetables, will also make a very good fattening mash. Wheat, oats and barley, in about equal parts, are satisfactory as a fattening ration. Oats give the desired white color to the carcass; for that reason it is recommended that a larger proportion of oats be fed than of barley. These feeds should be ground. Whole grains may also be used to lend variety. Corn is a good fattening feed, and on farms where grown its use is desirable, but it has a tendency, if fed in abundance, to produce yellowness of fat. For this reason it should be fed only in combination with other grains.

    RATIONS FOR DUCKS AND GEESE

    Moist mash feeding should be followed almost entirley in feeding and fattening ducklings and goslings. Any of the farm grains, fed singly or in combination, ground fine, adding milk or water and finely cut green feed, will make a good growing ration. Keep clean sand or gravel available to the birds at all times. Feed five times daily on the start, the three or four times a day. To force growth and market early, put 10 pounds of meat meal in every hundred pounds of mash. To fatten, restrict range or confine in yards or pens, cut down on green feed, give wet mash twice daily and give plenty of milk or water to drink.

    This factsheet is produced as a historical document describing how poultry flocks were managed in the 1940’s. Not all practices described would be recommended today (January 2006).

    CAST Releases White Paper On Need For Genetic Diversity In Livestock

    Source: CAST news release

    The genetic diversity of livestock and poultry is dwindling, leaving one-third of the world’s protein supply at risk to events such as weather extremes and disease outbreaks.

    A new paper from the Council for Agricultural Science and Technology addresses the associated risks with reduced access to genetic traits, as well as what should be done to protect remaining breeds. According to the paper, “up to 25 percent of global livestock breeds are either at risk of being lost, or have already been lost.”

    Current conservation practices such as cryopreservation and germplasm repositories are already in use to protect the genes of some animal livestock breeds, but the authors of the CAST paper argue more must be done to prepare for unpredictable future events. They include five recommendations that build on current conservation practices.

    “By losing breeds we make finding potential solutions to future production demands much more difficult, and recent history indicates that predicting future demand is problematic,” the authors write. “Conserving breeds saves these options and keeping them in the agricultural landscape is a reminder that these options exist.”

    The paper, Protecting Food Animal Gene Pools for Future Generations-A paper in the series on The Need for Agricultural Innovation to Sustainably Feed the World by 2050, is available for free download on CAST’s website.

    Download the full paper here.
    Download the Ag quickCAST here.

    Micro Aid Liquid for Waste Management Problems

    Download the complete Article

    Micro-Aid® Liquid has been university researched and commercially proven as being effective in controlling noxious gasses (e.g. – ammonia, hydrogen sulfide ,etc.) and accelerating waste breakdown in storage systems, along with improving cleanup of building pens and equipment.

    Download the complete Article

    Is Vertical Integration Good Or Bad For AgTech?blog by Todd Janzen Ag Law

    Source: blog by Todd Janzen Ag Law, janzen@aglaw.us

    It has become common for tech conferences to have Shark-Tank style competitions among new startups. The winner is awarded an investment from the conference host or supporting venture capital firm.

    In the case of the Forbes AgTech Summit, SVG Ventures selected two swine-focused agtech startups, BinSentry and SwineTech. Each will receive a $100,000 investment.

    Notably, this was the first agtech conference I’ve attended where both winners were from the swine industry, and that made me stop and think about how agtech adoption might be different for the vertically-integrated segments of agriculture.

    Agtech is new to agriculture, but vertical integration is not. The swine and poultry industries long ago vertically-integrated. Fifty years ago, a farmer owned his own sows, farrowed his own pigs and fed them until they were ready for market. The farmer bore all the risk, and this is why every economic cycle resulted in fewer pig farmers.

    Vertical integration stopped this downward spiral. Swine companies took the market risk and agreed to pay farmers to raise their pigs. Integrators became the owners of pigs and provided feed, vet care, and the latest animal-welfare knowledge. Vertical integration worked because it solved the risk problem.

    I watched the pitches for both BinSentry and SwineTech at the recent conference. (Its great to see entrepreneurs deliver pitches for new swine technology with all the same enthusiasm that Steve Jobs had for the iPhone). BinSentry pitched its wireless IoT device that allows you to monitor feed levels in storage bins remotely. SwineTech pitched its farrowing management tool that monitors piglet noises to determine when one might be crushed accidentally by a sow, sending an impulse to the sow to stimulate her to stand up.

    Both technologies answer problems prevalent in the industry-tracking feed usage and animal welfare.
    For both technologies to succeed, they have to be adopted into a mature, vertically integrated industry. That means neither technology needs to appeal to the contract grower, or farmer feeding pigs, to upscale.

    This fact greatly shrinks the pool of potential early adopters. This is an important distinction from agtech benefiting beef, dairy, grain or specialty crop farmers, where every farmer is looking for something new to drive down production costs and increase production.

    But developing agtech for a vertical industry can also have its benefits to the startup. If you can get a large integrator to demo your product, and that demo is successful, your sales pipeline will be full without having to build out a large salesforce.

    Ultimately, though, I am left with this question-does vertical integration boost agtech innovation or stifle it?

    Better air circulation, moderately lower humidity improve paw quality, By Connie Mou and Michael Czarick, University of Georgia

    Increasing air circulation coupled with moderate reductions in humidity can dramatically improve paw quality, Connie Mou and Michael Czarick, University of Georgia, told Poultry Health Today.

    By lowering the humidity level to 60% and using circulation fans that increase air movement across the litter to 150 feet per minute, litter dries uniformly across the house. That, in turn, improves paw quality and has the added benefit of reducing ammonia levels, said Mou, graduate research assistant.

    In one of the studies conducted during winter with three consecutive flocks, this approach to minimizing litter moisture reduced severe footpad lesions by nearly 50%, she said.

    “We see flock after flock with the same results,” noted Czarick, Extension poultry engineer.

    Provides compromise

    Increased ventilation is another way to keep litter drier, but that’s unrealistic due to the expense. “It’s just going to cost too much,” he said. “A little bit of humidity control and some good air movement” offer a compromise.

    The fans used in their research are 24-inch models with one-third horsepower, and they run continuously.

    There is an initial investment, Czarick acknowledged. The fans needed to achieve the necessary air circulation cost over $300 each in comparison to $80 per fan that growers are used to spending.

    With increased concern about animal welfare and the trend toward no-antibiotics-ever production, producers are focusing more on finding ways to prevent illness in their flocks. Drier litter is one worthwhile step producers can take, he indicated.

    “When it comes to antibiotic-free production, when it comes these welfare guidelines, we’re going to increase costs. We are using a little bit more gas because we’re ventilating more to keep the humidity down. We do have fans that do have operating costs. But what we have found, I think, is when we look at the big picture, the costs are not that overwhelming,” Czarick said.

     

     

    The Annual Challenge of Raising Healthy Birds in the Fall and Winter

    As fall approaches, the high temperatures from the summer begin to fall, reaching levels below the bird’s thermoneutral zone. A baby chick’s thermoneutral zone is fairly high – about 88-93°F during the first week. In fall and winter, maintaining high temperatures inside the house becomes not only more difficult, but also more expensive. In some cases, baby chicks are kept below their optimal temperature because of these factors. Ultimately, this causes them to grow slower and become stressed, which opens the door to disease challenges.

    The same principle applies to older birds, as reaching their thermoneutral zone also becomes more difficult in the fall and winter. Ventilation plays an additional role and often presents a challenge. Ventilation is marginal during fall and winter compared to the summer. During winter ventilation, cold air (instead of warm air, like in the summer) is brought inside the house, which then must be heated (of course, at a cost). Since the objective is to keep the birds warm at a low cost, ventilation typically decreases significantly during the winter months.1 This drop in ventilation causes the humidity in the litter to increase significantly, creating the perfect breeding grounds for enteric bacteria and coccidia to thrive. Ammonia levels in the house also rise due to decreased ventilation, which will make the birds more susceptible to respiratory challenges.

    When an animal first encounters a stressor, the neurogenic system is activated. Failed attempts to combat or flee from the stressor immediately results in the activation of the hypothalamic-pituitary-adrenal cortical system.2 The activation of this system eventually leads to the proliferation of the adrenal cortical tissue, which in turn secretes corticosterone – a stress hormone.3 Previous studies have shown that these stress hormones have a negative impact on broiler growth and performance.4

    Chromium supplementation has been shown to reduce the levels of corticosterone in birds, alleviating the negative impact of stress and allowing the birds to reach their full potential.5,6 Futhermore, chromium has been shown to improve performance in birds subjected to different types of stressors.6,7,8,9

    KemTRACE® Chromium – the first product of its kind on the market – is a water soluble, highly bioavailable, organic source of chromium that helps improve glucose utilization and reduce the negative impacts of stress for increased cellular energy and function. This results in improved growth and immunity in broilers. KemTRACE Chromium has been fed to millions of animals around the globe since its introduction in 2000. It is registered in more than 35 countries worldwide and is the only U.S. Food and Drug Administration-reviewed form of chromium propionate.

    In summary, birds experience a wide array of stressors in the colder months: sub-optimal temperatures, humidity, wet litter, poor ventilation and high ammonia. Together, these stressors make the birds more susceptible to disease challenges. If we can lower the corticosterone levels in stressed birds, we can help them grow properly and be better prepared to face disease challenges.

    References

    1Imaeda N., 2000. Influence of the Stocking Density and Rearing Season on Incidence of Sudden Death Syndrome in Broiler Chickens. Poultry Science 79:201–204.

    2Siegel, H. S. (1980). Physiological stress in birds. Bioscience 30:529–533.

    3Holmes, W. N., and J. G. Phillips (1976). The adrenal cortex of birds. Pages 292–420 in General, Comparative and Clinical Endocrinology of the Adrenal Cortex. I. Chester Jones and I. W. Henderson, ed. Academic Press, New York, NY.

    4Dupont J., M. Derouet, J. Simon and M. Taouis (1999). Corticosterone alters insulin signaling in chicken muscle and liver at different steps. Journal of Endocrinology 162, 67-76.

    5E. Mirfendereski and R. Jahanian (2015). Effects of dietary organic chromium and vitamin C supplementation on performance, immune responses, blood metabolites, and stress status of laying hens subjected to high stocking density. Poultry Science 94:281-288.

    6Lester T., Brown K., Vignale K., Alvarado C., Lee J., 2018. Evaluation of chromium propionate and a butyric acid complex on male growth performance, corticosterone level and meat yield. International Poultry Scientific Forum.  Atlanta, Georgia.  Abstract M86, pg. 26.

    7Vignale, K., Koltes D., Weil J., West S., Weimer S.L., Iseri V. and Christensen K.D., 2017. The effect of chromium propionate on performance responses in heat stressed male broiler chickens.  International Poultry Scientific Forum. Atlanta, Georgia. Abstract T181, pg. 53.

    8The Effect of KemTRACE Chromium on Broiler Performance During Heat Stress, TD-17-00187.

    9The Effect of KemTRACE Chromium On Broiler Performance and Carcass Characteristics, TD-17-00208.

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