Alternative Feeds for Beef Cattle.ppt

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1、Alternative Feeds for Beef Cattle,Dr. Matt Poore Extension Ruminant Nutritionist North Carolina State University,Forages are the most efficient feed we have for growing cattle, or cow/calf! Alternative feeds should supplement a good forage program,What is an Alternative Feed?,A non-traditional sourc

2、e of energy or protein generally to reduce feed cost NCBA SPA database indicates that feed accounts for over 50% of total costs, in 1992 total cow cost was $390 and feed was $185,Two Basic Types of Byproduct-Based Backgrounding Programs,Small cow/calf producers backgrounding calves after weaning, or

3、 producers with small numbers of stockers Forage-Based Programs Single Commodity Supplementation Programs Mid to large sized commercial backgrounders Feedlot Programs with Total Mixed Rations Commodity Sheds with Complex Blends of Byproducts,Example of how an alternative feed can impact feed cost,Ex

4、ample. Compare feeding a 14% CP commercial supplement to soybean hulls Commercial concentrate at $150/ton, soybean hulls at $85/ton, mineral at $500/ton, hay at $60/ton. 84 day feeding, 2.18 lb/day gain Gain valued at $.50/lb Actual data from UMRS, Laurel Springs,Influence of Concentrate Source (6 l

5、b/d) on Performance of Stocker Calves1,1 Calves were fed for 84 days on hay and 6 lb of concentrate at the Upper Mountain Research Station, Laurel Springs, NC,Feed Costs for Backgrounding Cattle Fed Soybean Hulls or a Commercial Concentrate,Feed amounts Comm Soyhulls 6 lb concentrate $.45 $.26 17.5

6、lb hay $.53 $.53 .25 lb mineral $.06 $.06Total $/day $1.04 $.85 Total $/84 days $87.36 $71.40 Gross Return $92.40 $92.40 Return over Feed $ 5 $ 21,Classification of Alternative Feeds,Co-products Have attained primary ingredient value. Soybean meal, cottonseed meal. Byproducts Great potential. Some f

7、actors may limit their use. Underutilized. Soybean hulls, corn gluten feed. Waste products Certain factors greatly limit their usefulness. Broiler litter, cotton waste, potato waste.,Factors Affecting Usefulness of Alternative Feeds,Moisture Content Nutrient Density Local Availability Seasonal Avail

8、ability Limited Inclusion Rate Handling/Processing/Storage Health Side Effects Public Perception,Common Alternative Feeds in NC,Soybean Hulls - Seed coat, high in digestible fiber, good source of energy and protein Wheat Middlings - Byproduct of flour production, good source of energy and protein Co

9、rn Gluten Feed - Wet is better than dry, results with dry are sometimes disappointing Whole Cottonseed - Good source of energy (fat) and protein, Gossypol limits use rate Grain Screenings - Quite variable, may contain mycotoxins and weed seeds Recycled Poultry Bedding (RPB) - Formerly known as “litt

10、er”. Low in energy, high in CP (1/2 from NPN) and minerals,Example of a Mixed Byproduct Backgrounding Ration1,_,_,1 This diet has consistently given 2.5 to 2.9 ADG over 56 days,Simple shed for storing byproduct commodities,Many studies at NCSU and elsewhere have shown that soybean hulls, wheat middl

11、ings and corn gluten feed are equal or nearly equal to corn and soybean meal, or commercial feeds, when fed at 4-6 lbs/head daily, along with pasture or hay and a good mineral.,Recently we have been working with self-feeding programs utilizing byproducts. Soybean hulls seem very well suited to this

12、use. Growing cattle will eat 10-18 lb of soybean hulls out of a self-feeder plus hay or pasture, and will gain between 2 and 3 lbs/day,Whole Cottonseed is a Great Supplement for Brood Cows,Whole cottonseed is very economical when purchased in October and November in North Carolina The high level of

13、protein and fat make it an ideal brood cow supplement It can be fed off the sod, in bunks or on unrolled hay Feeding cottonseed (or any fat source) before calving for 30-60 days improves calf vigor and cow reproduction,Cautions When Feeding Whole Cottonseed,Observe daily feeding limits. Cows 0.5% of

14、 body weight (6 lbs for a 1200 lb cow) Calves 0.33% of body weight (2 lbs for a 600 lb calf) Spread out so all can eat at once Dont feed to bulls except when they are with cows during the breeding season (because of the toxin gossypol). Feed every other day to brood cows works, but not more than 10

15、lb/cow/feeding,Storing Whole Cottonseed,Store under an open shed Dont cover with plastic because it will sweat Dont put it on plastic either. Concrete is ideal, but if floor of shed is dirt, then put down a layer of hay or straw. If kept dry it will last at least one year in storage. Carrying over f

16、rom one year to the next seems to work ok.,Any shed where you can back in a tractor trailer is a potential place to store whole cottonseed or other byproduct feed,Cottonseed can be fed out of bunks, off sod, or as shown here on top of hay that has been unrolled,Safety of RPB? Is It An Issue?,Animal

17、health issues Copper toxicity Hardware Salmonella and other pathogens? Public concerns Heavy metals in food supply Potential for pathogen contamination of meat supply Others? Over the many years broiler litter has been fed there have been few if any incidents that warrant banning RPB as a feed ingre

18、dient,Influence of RPB Stacking Method on Performance and Salmonella Shedding in Beef Calves,Calves were fed a control ration or RPB-based diets with or without monensin RPB was from houses that tested positive for Salmonella Stacking was either deep (normal heat) or shallow (insufficient heat) Back

19、grounding diets fed for 84 days, then cattle were finished Fecal samples were taken every 2 weeks up until slaughter,Conclusions,RPB was Salmonella positive at cleanout and when it arrived at the research station, but was negative after stacking by either method Deep-stacking RPB improved gain and i

20、ntake No Salmonella shedding was found throughout the backgrounding and finishing phase RPB had no negative impact on finishing performance or carcass characteristics,Future Work with Alternative Feeds,Further determination of the realized value of underutilized byproducts, and developing strategies

21、 to get more out of poorly performing products Manufacturing value-added ingredients from various waste and byproducts common in the region Improving public acceptance, especially of waste products as feed ingredients,Summary,Alternative feeds have great potential to reduce feed costs for producers in the Mid-Atlantic region Increased management is almost always necessary to make alternative feed programs work Byproducts can be used in very simple, one ingredient applications or in complex multi-ingredient rations,