不同β-受体激动剂添加模式对肉牛血液生化指标和激素水平的影响
发布时间：2018-08-07 16:01
【摘要】：试验旨在研究不同β-受体激动剂添加模式对肉牛血液生化指标和激素水平的影响。选取15头体况良好、体重相近(257.9kg±33.3kg)的西门塔尔肉牛,随机分为3组,每组5头。对照组饲喂基础日粮;试验Ⅰ组添加莱克多巴胺,添加剂量为670.0μg/kg体重;试验Ⅱ组添加莱克多巴胺、沙丁胺醇和克伦特罗的混合物,添加剂量分别为223.3、50.0、5.3μg/kg体重。给药期28d,停药期28d。结果表明,与对照组相比,在给药第28天时,试验Ⅰ组肉牛血浆中游离脂肪酸(FFA)浓度显著降低(P0.05),试验Ⅱ组肉牛血浆中葡萄糖(GLU)和游离脂肪酸浓度均显著降低(P0.05);整个试验过程中,除停药第28天时试验Ⅰ组肉牛血浆中胰岛素(INS)水平显著高于对照组外(P0.05),β-受体激动剂对各试验组血浆中激素水平均无显著影响(P0.05)。综合上述试验结果,肉牛血浆中的FFA可作为β-受体激动剂潜在的生物标志物,可通过对其的监测来监管β-受体激动剂在肉牛生产环节中的非法使用。
[Abstract]:The aim of this study was to study the effects of different 尾-agonist supplementation patterns on blood biochemical indexes and hormone levels in beef cattle. Fifteen Simmental beef cattle with good body condition and similar body weight (257.9kg 卤33.3kg) were randomly divided into 3 groups with 5 heads in each group. The control group was fed basic diet, the control group was fed with ractopamine at a dose of 670.0 渭 g/kg body weight, and the experimental group 鈪，
本文编号：2170557
[Abstract]:The aim of this study was to study the effects of different 尾-agonist supplementation patterns on blood biochemical indexes and hormone levels in beef cattle. Fifteen Simmental beef cattle with good body condition and similar body weight (257.9kg 卤33.3kg) were randomly divided into 3 groups with 5 heads in each group. The control group was fed basic diet, the control group was fed with ractopamine at a dose of 670.0 渭 g/kg body weight, and the experimental group 鈪，
本文编号：2170557
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