麻枫仁粕氨基酸及能量营养价值评定

Evaluation of Nutritional Values of Amino Acids and Energy of Jatropha curcas Kernel Meal

本试验选用60只艾维茵肉公鸡,采用Sibbald真代谢能法对4种不同来源的麻枫仁粕的氨基酸、能量代谢率进行测定,旨在为麻枫仁粕在肉鸡上的应用提供一定的基础数据。4种原料(Ⅰ～Ⅳ)分别为不同产地不同处理方法得到的麻枫仁粕。本试验共设6个处理,每个处理10个重复,每个重复1只鸡。处理1为基础饲粮组,处理2(T2)为85%基础饲粮+15%原料Ⅰ,处理3(T3)为85%基础饲粮+15%原料Ⅱ,处理4(T4)为85%基础饲粮+15%原料Ⅲ,处理5(T5)为85%基础饲粮+15%原料Ⅳ,处理6(T6)为饥饿组,用以测定内源损耗部分。试验为期7d。结果表明,干物质中麻枫仁粕Ⅰ、Ⅱ、Ⅲ、Ⅳ的粗蛋白质含量分别为66.87%、56.69%、56.27%、43.07%;总能分别为17.83、18.31、18.02、22.88MJ/kg,表观代谢能分别为11.73、12.16、11.93、15.23MJ/kg,真代谢能分别为14.41、14.91、14.64、18.66MJ/kg。4种麻枫仁粕的氨基酸存在不平衡状况,从限制性氨基酸的角度来看,麻枫仁粕的第一限制性氨基酸为蛋氨酸,第二限制性氨基酸为赖氨酸。

This experiment was conducted to evaluate the availability of amino acids, the metabolizable energy and the metabolic rate of energy of both detoxified and non-detoxified Jatropha curcas kernel meal. Sixty 50-day-old male Avian broilers were allotted to 6 treatments with 10 replicates per treatment and 1 chick per replicate in a completely randomized design. Four kinds of Jatropha curcas kernel meal from different places of origin with different processing methods were used in this study. Diet 1 was basal diet; diet 2 was 85% basal diet＋15% Jatropha curcas kernel meal Ⅰ; diet 3 was 85% basal diet＋15% Jatropha curcas kernel meal Ⅱ; diet 4 was 85% basal diet＋15% Jatropha curcas kernel meal Ⅲ; diet 5 was 85% basal diet＋15% Jatropha curcas kernel meal Ⅳ; treatment 6 was fasting to detect the endogenous lost. The experiment lasted for 7 d. The contents of crude protein in the dry matter of the four kinds of Jatropha curcas kernel meal were 66.87%, 56.69%, 56.27%, and 43.07%, respectively; the total energy were 17.83, 18.31, 18.02, and 22.88 MJ/kg, respectively; the apparent metabolizable energy were 11.73, 12.16, 11.93, and 15.23 MJ/kg, respectively; the true metabolizable energy were 14.41, 14.91, 14.64, and 18.66 MJ/kg, respectively. The amino acid patterns were not well balanced for the four kinds of ingredients. The first limiting amino acid was methionine and the second one was lysine in Jatropha curcas meal.