利用动物饲养试验评估优质豆粕代谢能的研究

Evaluation of Metabolizable Energy of High Value Soybean Meal by Animal Experiment

通过8~42日龄试期肉仔鸡生产性能的表现来评估在实际生产条件下优质豆粕的代谢能值。试验选用7日龄AA肉仔鸡480只（雌雄各半）随机分成4个处理组,每处理组10个重复,每重复12只鸡,分别饲喂由普通豆粕（A）和优质豆粕（B、C、D）所配合的4组日粮。A组为对照组,代谢能为9.87 MJ/kg;B、C、D组优质豆粕的代谢能设定为9.87 MJ/kg、10.71 MJ/kg和11.55 MJ/kg。4个处理组的营养需要均参照2004年我国肉仔鸡营养需要标准配制。结果表明,处理日粮能量水平与各处理肉仔鸡的体重、日增重和饲料效率在不同生长阶段有一定的线性相关关系（R2〉0.60）,而日采食量却无明显规律变化。其中肉仔鸡的饲料效率与日粮的能量水平之间线性相关性最强,即饲料效率与优质豆粕的假设代谢能线性关系最强。所以根据其线性方程来估测优质豆粕的代谢能,优质豆粕代谢能为11.22 MJ/kg,比普通豆粕代谢能高出了1.35 MJ/kg。

To evaluate the metabolizable energy of high value soybean meal by comparative production performance of broilers in the plant conditions a feeding experiment was conducted. 480 seven olddays broilers were randomly divided into four treatments with 10 replications of 12 birds fed with four rations which were made up of soybean-meal（A） and high value soybean-meal（B,C,D）. Treatment A was control, the figures of the poultry metabolizable energy of high value soybean meal in three treatment rations（B,C,D） were 2.35 Mcal/kg,2.55 Mcal/kg and 2.75 Mcal/kg which were supposed separately. Results showed that the observed feed intake, daily weight gain and feed efficiency were regressed with the dietary treatments. The results indicated that PME in HVS was 1.35 MJ/kg higher than that in DSBM, or PME in HVS wad 11.22 MJ/kg.