爱拔益加肉仔鸡对胍基乙酸的耐受性评价

发布时间：2018-10-15 15:38

【摘要】：本试验旨在研究饲粮添加胍基乙酸(GAA)对爱拔益加(AA)肉仔鸡生长性能、血液学指标、脏器指数、组织同型半胱氨酸含量以及组织形态的影响,以系统评价AA肉仔鸡对GAA的耐受性。试验选用540只1日龄AA肉仔鸡公雏,随机分为5个组,每组6个重复,每个重复18只鸡。5组试鸡分别饲喂在基础饲粮中添加0、800、1 600、4 000和8 000 mg/kg GAA的饲粮。试验期42 d,分为前期(1~21日龄)和后期(22~42日龄)2个阶段。结果表明:与对照组相比,饲粮添加800~4 000 mg/kg GAA显著提高了肉仔鸡前期、后期和全期平均日增重(P0.05),显著降低其后期和全期料重比(P0.05),但对各期平均日采食量均无显著影响(P0.05)。饲粮添加8 000 mg/kg GAA组的平均日增重、平均日采食量和料重比与对照组相比差异不显著(P0.05)。饲粮添加800~8 000 mg/kg GAA对21、42日龄肉仔鸡血常规指标、血清生化指标、脏器指数和组织同型半胱氨酸含量均无显著影响(P0.05)。饲粮添加4 000、8 000 mg/kg GAA对肉仔鸡肝脏和肾脏组织形态无不良影响。由此可见,肉仔鸡饲粮中添加GAA对其生长性能、血液学指标、脏器指数、组织同型半胱氨酸含量和组织形态无不良影响,肉仔鸡可耐受8 000 mg/kg GAA。
[Abstract]:The purpose of this experiment was to study the effects of diet supplemented with guanidine acetate (GAA) on growth performance, hematological index, organ index, tissue homocysteine content and tissue morphology of (AA) broilers, and to evaluate systematically the tolerance of AA broilers to GAA. A total of 540 1-day-old AA broilers were randomly divided into 5 groups, 6 replicates in each group and 18 chickens in each group. The experiment period was 42 days, which was divided into two stages: the early stage (1: 21 days) and the late stage (22 ~ 42 days old). The results showed that compared with the control group, the average daily gain (ADG) of the broilers increased significantly (P0.05) in the early stage, the later stage and the whole period (P0.05), and the feed weight ratio (P0.05) decreased significantly, but there was no significant effect on the average daily intake in each period (P0.05). The average daily gain, average daily intake and feed weight ratio of the group supplemented with 8 000 mg/kg GAA diet were not significantly different from those of the control group (P0.05). There was no significant effect on blood routine index, serum biochemical index, visceral index and tissue homocysteine content of 21 ~ 42-day-old broilers supplemented with 800 ~ (8 000 mg/kg GAA) diet (P0.05). There was no adverse effect on liver and kidney morphology of broilers fed with 4 000 ~ 8 000 mg/kg GAA diet. It can be seen that there is no adverse effect on growth performance, hematologic index, organ index, tissue homocysteine content and tissue morphology of broilers fed with GAA, but the broilers can tolerate 8 000 mg/kg GAA..
【作者单位】：中国农业大学动物营养学国家重点实验室农业部饲料安全与生物学效价重点实验室;北京君德同创农牧科技股份有限公司;
【基金】：北京市科技计划项目资助(Z151100001215001)
【分类号】：S831.5

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