398
实际日增重(kg)
1.25
1.22
实际采食量(kg)
1243
1299
净饲料采食量(kg)
-20
59
饲料转化效率
8.4
9.2
脂肪厚度(mm)
7.5
8.3
398
实际日增重(kg)
1.25
1.22
实际采食量(kg)
1243
1299
净饲料采食量(kg)
-20
59
饲料转化效率
8.4
9.2
脂肪厚度(mm)
7.5
8.3
参考文献
Baldwin, R. L.,K. C. Donovan and J. L. Beckett. 1992. Returns of human edible input in agriculture updated.Feedstuffs, Aug. 17, 1992
Barker,J.M.,D.D.Buskirk,and S.R.Rust.1999.Early weaning: feedlot performance and carcass characteristcs of steers Michigan.State.Univ.Annual Rep.to NCR-87
Bourdon,R.M.and. B. L. Golden.1999. Beef. cattle. breeding.in.the. new. millennium. American Red Angus,Feb.,1999
Budkirk,D.D.1998.How to feed your cows 75% less hay .Michigan state Univ. Cattle call newsletter.Vol.3,No.3
Buskirk,D.D.,M.Kaercher,T.Harrigan,A.Z.Zanella,D.R.Hawkins,G. Limdquist,J, Cowley and.J.VanLente.1999.Evaluation.of.forage.loss.from.large. round. bale feeders. Michigan State Umiv.Rep.to NCR-87
Davis,K.C.,D.D.Kress,D.E.Doornbos and D.C.Anderson.1994.Life cycle evaluation of five biological types of beef cattle in a cow-calf production system: II.Biological and economic importance.J.Anim.Sci.72:2591
Dickerson,G. E. 1984. Measuring efficiency of beef production.In: Proc. Breeding Beef Cattle in a Range Environment.p.115.Fort Keogh Research Symp.,Miles City,Mont.