复合酶制剂对奶牛生产性能和营养物质表观消化率的影响
Effects of Compound Enzyme Preparation on Performance and Nutrient Apparent Digestibility of Lactating Cows
王宝义 1韩吉雨 1张彩霞 1李俊良1
作者信息
- 1. 内蒙古伊利实业集团股份有限公司奶牛科学研究院,呼和浩特 010010
- 折叠
摘要
本试验旨在研究日粮中添加复合酶制剂对奶牛生产性能和营养物质表观消化率的影响.采取全群试验,饲喂添加40g/(头·d)复合酶制剂的试验日粮,正试期9周.结果表明:①复合酶制剂显著提高了奶牛的产奶量(P<0.05);②复合酶制剂对干物质采食量无显著影响(P>0.05),显著提高了饲料效率(P<0.05);③复合酶制剂对乳蛋白含量无显著影响(P>0.05),显著提高乳脂肪含量(P<0.05);④干物质表观消化率60d、40d显著高于0d、20d(P<0.05),蛋白质表观消化率60d、40d间无显著差异(P<0.05),显著高于0d、20d(P<0.05),NDF、ADF和有机物表观消化率60d、40d显著高于0d、20d(P<0.05),淀粉表观消化率40d、60d显著高于20d(P<0.05),与0d无显著差异(P<0.05).在本试验条件下,日粮中添加复合酶制剂有助于提高奶牛生产性能和营养物质表观消化率.
Abstract
The object of this experiment was conducted to study the effects of compound enzyme preparation in the diet on performance and nutrient apparent digestibility,serum indexes of lactating cows.Conduct a complete group experiment and feed a test diet with an addition of 40g/(head·day)complex enzyme preparation for a duration of 9 weeks.The results showed that:① the compound enzyme preparation significantly improved the milk yield of dairy cows(P<0.05).②Compound enzyme preparation has no significant effect on dry material feed intake(P>0.05),significantly improve the feed efficiency(P<0.05).③The compound enzyme preparation had no significant effect on the milk protein content(P>0.05),significantly increased the milk fat content(P<0.05).④The apparent digestibility of dry matter was significantly higher at 60d and 40d than at 0d and 20d(P<0.05),no significant apparent digestibility between 60d and 40d(P<0.05),significantly higher than 0d,20d(P<0.05).The apparent digestibility of NDF,ADF and organic matter was significantly higher at 60d and 40d than at 0d and 20d(P<0.05),The apparent digestibility of starch was significantly higher at 40d and 60d than at 20d(P<0.05),no significant effect with 0d(P<0.05).Under the test conditions,the addition of compound enzyme preparation improved the performance and the apparent digestibility of nutrients.
关键词
复合酶制剂/奶牛/表观消化率/生产性能Key words
Compound enzyme preparation/Lactating cow/Nutrient apparent digestibility/Performance引用本文复制引用
基金项目
2020年呼和浩特市重大科技专项资金(2020-农-重-1)
出版年
2024
国家科技期刊平台
NSTL
万方数据