期刊论文

Effects of Selenium Source and Microecological Agent on Nutrient Digestibility, Rumen Fermentation and Rumen Microflora of Beef Cattle

中文

动物营养学报

1006-267X

2021

33

12

6864-6875

10.3969/j.issn.1006-267x.2021.12.028

湖南省草食动物产业技术体系营养与饲料岗位项目；

本校为第一机构

本试验旨在研究硒源和微生态制剂对肉牛营养物质消化率、瘤胃发酵及瘤胃微生物区系的影响。选取24头新疆褐牛杂交牛,平均体重为(407.48±36.13) kg,采用2×2双因子随机设计分为4个组,每组6个重复,每个重复1头牛。在精料补充料中,A组添加0.68 mg / kg无机硒;B组混合添加0.68 mg / kg无机硒和3%微生态制剂;C组添加0.68 mg / kg有机硒;D组混合添加0.68 mg / kg有机硒和3%微生态制剂。预试期14 d,正试期37 d。结果显示:1)硒源和微生态制剂对肉牛营养物质消化率无显著影响( P>0.05) 。2)微生态制剂显著影响瘤胃液氨态氮浓度( P0.05) 。硒源趋于显著影响瘤胃液乙酸/丙酸值( P = 0.098),对其他瘤胃发酵...

This experiment was conducted to study the effects of selenium source and microecological agent on nutrient digestibility, rumen fermentation and rumen microflora of beef cattle. Twenty-four Xinjiang brown crossbred cattle with an average body weight of (407.48±36.13) kg were randomly divided into 4 groups with 6 replicates per group and 1 cattle per replicate using a 2×2 two-factor random design. In concentrate supplement, group A was supplemented with 0.68 mg / kg inorganic selenium; group B was mixed with 0.68 mg / kg inorganic selenium an...