3[3]Boisen S,Hvelplund T,Weisbjerg M R.Ideal Amino Acid Profiles as a Basis for Feed Protein Evaluation[J].Livestock Pro-duction SCience,2000,64(2-3):239~251.
4[4]Swensson C.Relationship Between Content of Crude Protein in Rations for Dairy Cows,N in Urine and Ammonia Release[J].Livestock Production Science,2003,84(2):125~133.
9[10]Wolfenson D.The Effect of Acclimatization on Blood Flow and its Distribution in Normothemie and Hyperthermic Domestic Fowl[J].Comp Biochem Physiol A,1986,85:739~742.