加利福尼亚肉兔含硫氨基酸需要量的研究  

Sulphur-Amino Acids Requirement for Califonia Rabbits

作　　者：计成[1] 顾宏伟[1] 杜玉川[1] 戎易[1] 许万根[2] 

机构地区：[1]北京农业大学动物医学院,北京100094 [2]中国农科院畜牧研究所

出　　处：《北京农业大学学报》1994年第3期332-337,共6页

摘　　要：32只加利福尼亚肉兔被随机分成4组,采食不同 S-氨基酸饲粮。4组试验日粮分别含有0.43%,0.56%,0.68%和0.81% S-氨基酸,研究加利福尼亚肉兔 S-氨基酸的需要量。基础饲粮含有10.46 MJ·kg^(-1)消化能和15%粗蛋白。进行了3期饲养试验和1次氮平衡试验。结果指出:日增重和每日 S-氨基酸进食量呈强相关,回归分析得到 Y(日增重)=-77.65+260.92X(每日 S-氨基酸进食量)-150.21X^2。加利福尼亚肉兔每日进食0.868 g S-氨基酸获得最佳增重效果。N-平衡试验结果证明;S-氨基酸进食量为0.765 g 时,N 存留量达到最大值。因此认为,每日采食量140.0 g 时,饲粮含0.62%的 S-氨基酸,可获的加利福尼亚肉兔最佳生长效果。32 Califonia Rabbits were allocated in individual cages for four treatments in which they were fed a diet containing 0.43% or 0.56% or 0.68% or.81% Sulphur-containing amino acids(S-AA) (analytical value)in order to evaluate the S-AA requirment of the growing California Rabbits.The four treatments were made by adding various amount of DL-Met to the basic diets containing 10.46MJ·kg^(-1)DE and 15% CP.Three two-week period trials were conducted,and at the last period a N-ballance assay was also carried out.Results revealed there were a strong relation between average daily gain per rabbit and average daily S-AA intake per rabbit.A non-lineargrowth model wereobtained.The equation can be ex- pressed as:Y(average daily gain per rabbit)=-77.65+260.92X(average daily intake of S-AA per rabbit)-150.21X2.Optimum S-AA daily intake was 0.868 g for growth according to this model.The break-point of two linear equations obtained in the N-ballance assay indicated optimum S-AA intake per rabbit was 0.7653 g for best N-retention.

关 键 词：家兔 饲料 需要量 S-氨酸酸 营养 兔 

分 类 号：S829.1[农业科学—畜牧学]