甜菜碱对肉仔鸡生产性能和免疫功能的影响

发布时间：2018-12-09 08:17

【摘要】：本试验旨在探讨玉米-豆粕型日粮中添加甜菜碱对肉仔鸡生产性能和免疫功能的影响。选用1日龄AA肉仔鸡180羽,随机分成3组,每组6个重复,每个重复10羽。对照组饲喂基础日粮,试验组分别在基础日粮基础上添加400 mg/kg和800 mg/kg甜菜碱。试验期42 d。结果表明:与对照组相比,日粮中添加800 mg/kg甜菜碱时,42日龄肉仔鸡体重、日采食量和日增重分别提高12.3%、10.2%和12.5%(P0.05);日粮中添加400 mg/kg时,肉仔鸡代谢能和钙的表观代谢率分别提高1.8%和5.4%(P0.05),添加800 mg/kg甜菜碱的能量、粗蛋白质、粗脂肪、钙和磷表观代谢率分别提高2.7%、6.1%、6.8%、9.4%、4.3%(P0.05);甜菜碱有提高肉仔鸡胸肌率和腿肌率趋势(P0.05),并可显著降低肉仔鸡腹脂率(P0.05);400 mg/kg和800 mg/kg甜菜碱组肉仔鸡脾脏指数分别提高9.5%和11.9%(P0.05),血液白细胞介素2(IL-2)分别提高9.7%和41.6%(P0.05)。由此可见,饲粮中添加甜菜碱可提高肉仔鸡的生产性能,增强肉仔鸡免疫能力。
[Abstract]:The purpose of this study was to investigate the effects of betaine supplementation on the performance and immune function of broilers in a corn-soybean meal diet. 180 1-day-old AA broilers were randomly divided into 3 groups with 6 replicates in each group and 10 replicates in each group. The control group was fed with basal diet, and the experimental group was supplemented with 400 mg/kg and 800 mg/kg betaine, respectively. The experimental period was 42 days. The results showed that the body weight, daily intake and daily gain of 42-day-old broilers were increased by 12.32% and 12.5% (P0.05) compared with the control group. The apparent metabolic rates of metabolizable energy and calcium were increased by 1.8% and 5.4% (P0.05), and the energy, crude protein, crude fat of 800 mg/kg betaine were added to the diet for 400 mg/kg. The apparent metabolic rates of calcium and phosphorus were increased by 2.3% (P0.05) and 6.8% (P0.05), respectively. Betaine increased breast and leg muscle rate (P0.05), and significantly decreased abdominal fat rate (P0.05). The spleen index of 400 mg/kg and 800 mg/kg betaine group increased by 9.5% and 11.9% (P0.05), and the blood interleukin 2 (IL-2) increased by 9.7% and 41.6% (P0.05) respectively. It can be seen that the addition of betaine in diet can improve the performance of broilers and enhance the immune ability of broilers.
【作者单位】：东北农业大学动物科学技术学院;山东益生种畜禽股份有限公司;
【基金】：黑龙江省教育厅科学技术研究项目(12531036)
【分类号】：S831.5

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