42—62日龄康贝尔麻鸭蛋氨酸和赖氨酸的需要量

doi:10.3864/j.issn.0578-1752.2013.16.015

摘要/Abstract

摘要： 【目的】研究饲粮蛋氨酸和赖氨酸添加水平对康贝尔麻鸭生产性能、屠宰性能、抗氧化功能等的影响，探讨42—62日龄康贝尔麻鸭的蛋氨酸与赖氨酸需要量。【方法】选用42日龄健康的康贝尔麻鸭936只，根据体重随机分成9组，每组4个重复，每个重复26只鸭。试验为蛋氨酸与赖氨酸3×3处理设计，蛋氨酸水平分别为0.28%、0.38%、0.48%，赖氨酸水平分别为0.58%、0.73%、0.88%。试验周期为21 d。【结果】饲粮蛋氨酸与赖氨酸交叉作用对麻鸭生产性能无显著影响（P＞0.05）；饲粮蛋氨酸与赖氨酸交叉作用对麻鸭屠宰率影响显著（P＜0.05）；饲粮中蛋氨酸与赖氨酸水平的变化对麻鸭肝脏SOD活力和GSH-Px活力有显著影响（P＜0.05），其中以蛋氨酸水平为0.38%，赖氨酸水平为0.88%组效果最好，但对MDA含量无显著影响（P＞0.05）。【结论】在饲粮蛋氨酸水平为0.28%—0.48%、赖氨酸水平为0.58%—0.88%范围内42—62日龄康贝尔麻鸭生产性能不受该两种限制性氨基酸影响，但饲粮中适宜蛋氨酸和赖氨酸的比例可改善肉鸭屠宰性能，提高机体抗氧化功能；在饲粮代谢能水平为11.49 MJ•kg-1且粗蛋白质水平为16.44%时，42—62日龄康贝尔麻鸭饲粮蛋氨酸推荐总量为0.38%，赖氨酸推荐总量为0.73%。

关键词: 蛋氨酸 , 赖氨酸 , 需要量 , 康贝尔麻鸭

Abstract: 【Objective】 An experiment was conducted to investigate dietary methionine and lysine levels on growth performance, slaughter performance and antioxidant capacity in Campbell Sheldrake ducks from 42 to 62 days, and estimate the optimal dietary methionine and lysine levels for Sheldrake ducks.【Method】A total of 936 42-day-old ducks were randomly designed to 3×3 treatments with 4 replicates of 26 birds each. Ducks were fed with diets containing methionine at 0.28%, 0.38%, and 0.48% and lysine at 0.58%, 0.73%, and 0.88%, respectively, for 21 days.【Result】The interaction of dietary methionine and lysine had no effect on growth performance of meat ducks (P＞0.05), but had a significant effect on carcass rate (P＜0.05). Moreover, methionine and lysine interaction had significant effects on hepatic SOD activity and hepatic GSH-Px activity (P＜0.05), which Met 0.38% and Lys 0.88% group showed the most significant effects. The interactions of dietary methionine and lysine had no effect on hepatic level of MDA (P＞0.05). 【Conclusion】 The dietary methionine recommended for Campbell Sheldrake duck at the period of 42-62 days is 0.38%, and the Lysine recommended is 0.73% (ME 11.49 MJ•kg-1; CP16.44%).

Key words: methionine , lysine , requirement , Campbell Sheldrake ducks

叶慧, 邬爱姬, 邓远帆, 王文策, 杨琳. 42—62日龄康贝尔麻鸭蛋氨酸和赖氨酸的需要量[J]. 中国农业科学, 2013, 46(16): 3444-3451.

YE Hui, WU Ai-Ji, DENG Yuan-Fan, WANG Wen-Ce, YANG Lin. Methionine and Lysine Requirement of Campbell Sheldrake Ducks from Forty-Two to Sixty-Two Days of Age[J]. Scientia Agricultura Sinica, 2013, 46(16): 3444-3451.

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