【摘 要】
：
牛至油作为一种具有较高天然活性成分的中草药饲料添加剂,以其具有无残留、无耐药性、无配伍禁忌、促生长以及能够提升饲料转化率等优点备受国内外研究者和养殖者的广泛关注.该试验通过在产蛋高峰期鸡饲料中添加不同剂量的牛至油,研究其对蛋鸡生产性能、鸡蛋物理性质、肠道微生物区系、肠道消化酶、肠道形态结构以及肠道葡萄糖和小肽转运蛋白mRNA表达的影响,确定其适宜添加量,揭示其影响的分子机理,以期为开发利用牛至油提
【机 构】
：
黑龙江八一农垦大学动物科技学院,黑龙江大庆163319
【出 处】
：
中国畜牧兽医学会兽医内科与临床诊疗学分会第八届代表大会暨学术研讨会
论文部分内容阅读
牛至油作为一种具有较高天然活性成分的中草药饲料添加剂,以其具有无残留、无耐药性、无配伍禁忌、促生长以及能够提升饲料转化率等优点备受国内外研究者和养殖者的广泛关注.该试验通过在产蛋高峰期鸡饲料中添加不同剂量的牛至油,研究其对蛋鸡生产性能、鸡蛋物理性质、肠道微生物区系、肠道消化酶、肠道形态结构以及肠道葡萄糖和小肽转运蛋白mRNA表达的影响,确定其适宜添加量,揭示其影响的分子机理,以期为开发利用牛至油提供试验依据.选取150只30周龄蛋鸡,随机分为5组.空白对照组(Ⅳ组)饲喂基础日粮,3个试验组(Ⅰ、Ⅱ、Ⅲ组)及抗生素对照组(Ⅴ组)在基础日粮中分别添加50、100、150 mg/kg牛至油和100 mg/kg的10％硫酸黏杆菌素.预试期1周,试验期7周.试验结果：牛至油在蛋鸡饲料中的最适添加量为100 mg/kg.100mg/kg牛至油能显著提高蛋鸡生产性能,改善鸡蛋品质,有效调节肠道微生物区系平衡,提高胰蛋白酶、淀粉酶以及脂肪酶的酶活性,通过对绒毛高度、隐窝深度及V/C值的改变来改善肠道形态,增加葡萄糖转运载体(SGLT1、GLUT2)及小肽转运载体(PepT1)的mRNA表达量,进而改善蛋鸡肠道消化吸收功能.
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