不同能量水平限饲对肉种鸡种蛋氨基酸及脂肪酸含量影响

发布时间：2018-10-06 18:15

【摘要】：文章探讨不同能量水平日粮对肉种鸡种蛋氨基酸及脂肪酸含量影响。选用27周龄体重相近爱拔益加(AA)肉种鸡240羽,随机分为4组,每组设6个重复,每个重复10羽,产蛋率达5%时开始试验,对照组饲喂基础日粮,试验组饲粮能量水平分别为对照组80%、70%、50%,各组每日投料量及饲粮中粗蛋白质、氨基酸等其他营养水平均相同,40周龄结束试验,测定种蛋中氨基酸及脂肪酸含量。结果表明,(1)与对照组相比,35周龄时50%限饲组蛋黄中必需氨基酸含量显著升高(P0.05),而80%、70%限饲组有上升趋势,但差异不显著(P0.05),其中70%、50%限饲组蛋黄中苏氨酸、苯丙氨酸含量显著升高(P0.05),各限饲组蛋黄中总游离氨基酸有升高趋势,但差异不显著(P0.05);各限饲组对蛋清中必需氨基酸、总游离氨基酸含量均无显著影响(P0.05),但70%、50%限饲组蛋氨酸含量显著升高(P0.05)。(2)与对照组相比,35周龄时50%限饲组蛋黄中必需脂肪酸、不饱和脂肪酸含量显著升高(P0.05);40周龄肉种鸡70%、50%能量限饲组必需脂肪酸、饱和脂肪酸和不饱和脂肪酸均显著下降(P0.05)。综上所述,35周龄时,肉种鸡能量限饲可提高种蛋中氨基酸及脂肪酸含量,40周龄时不宜过度能量限饲。
[Abstract]:The effects of different energy levels on the content of amino acids and fatty acids in broiler eggs were studied. Two hundred and forty (AA) broilers of similar weight at the age of 27 weeks were randomly divided into 4 groups. Each group was divided into 6 replicates (10 replicates) and the egg laying rate was 5. The control group was fed basic diet. The dietary energy levels in the test group were 80% and 70% respectively as the control group. The daily feed intake and other nutritional levels of crude protein and amino acid in the diet were the same in each group. The contents of amino acids and fatty acids in the eggs were determined at the age of 40 weeks. The results showed that (1) compared with the control group, the content of essential amino acids in the egg yolk of the 50% restricted group was significantly higher than that of the control group at 35 weeks (P0.05), while the content of the essential amino acid in the egg yolk of the control group increased significantly (P0.05), but the difference was not significant (P0.05), and the threonine in the yolk of the 50% diet group was significantly higher than that of the control group (P0.05). The content of phenylalanine increased significantly (P0.05), and the total free amino acids in yolk of each restricted feeding group increased, but the difference was not significant (P0.05). The content of total free amino acids was not significantly affected (P0.05), but the content of methionine increased significantly (P0.05). (2) in the 50% diet group compared with the control group at 35 weeks of age, the essential fatty acids in the egg yolk of the 50% diet group were significantly higher than those of the control group. The content of unsaturated fatty acids increased significantly (P0.05), and the essential fatty acids, saturated fatty acids and unsaturated fatty acids decreased significantly (P0.05). In conclusion, energy restriction could increase the content of amino acids and fatty acids in eggs at 35 weeks of age and was not suitable for excessive energy restriction at 40 weeks of age.
【作者单位】：东北农业大学动物科学技术学院;
【基金】：黑龙江省教育厅科学技术研究项目(12531036) 哈尔滨市应用技术研究与开发项目(2016RAXXJ015)
【分类号】：S831.5

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