日粮中添加活性酵母产品对肉牛生长性能、养分消化率及经济效益的影响

发布时间：2018-04-20 06:38

本文选题：活性酵母 + 肉牛　；参考：《中国畜牧杂志》2017年06期

【摘要】：本试验旨在研究日粮中添加活性酵母产品对肉牛生长性能、养分消化率及育肥经济效益的影响。试验选用30头体重为(427±8)kg的法系夏洛莱牛,随机分为3组(对照组、S10组和S20组),每组10头,其中对照组饲喂基础日粮,S10组、S20组在饲喂基础日粮的同时分别添加10 g/(头·d)和20 g/(头·d)活性酵母产品。结果表明:S20组日增重最高,达到1.25 kg/d,显著高出对照组40.70%(P0.05),S10组日增重比对照组高25.58%(P0.05);S20组耗料增重比最低,达到6.80:1,对照组最高,为12.18:1;S20组瘤胃内羧甲基纤维素酶和木聚糖酶活性相较对照组显著提高,其中,中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)表观消化率分别显著高出对照组12.13%和8.72%(P0.05),S10组NDF和ADF表观消化率分别比对照组高6.35%和2.91%(P0.05)。综上可知,日粮中添加活性酵母产品可显著降低育肥牛耗料增重比,降低饲养成本,提高经济效益。在本试验条件下,日粮中添加20 g/(头·d)活性酵母产品的增重效益最高。
[Abstract]:The purpose of this experiment was to study the effects of adding active yeast products to the diets on the growth performance, nutrient digestibility and fattening economic benefit of beef cattle. Thirty Charolais cattle, weighing 427 卤8)kg, were randomly divided into 3 groups (control group S10 and S20 group, 10 in each group). The control group was fed with basal diet S10 and S20 supplemented with 10 g / (head d) and 20 g / (head d) active yeast products respectively. The results showed that the daily gain of the control group was the highest, reaching 1.25 kg / d, which was significantly higher than that of the control group (40.70%). The daily gain of the control group was 25.58% higher than that of the control group (25.58%), and the gain ratio of the control group was the lowest, reaching 6.80: 1. The control group had the highest daily gain. The activities of carboxymethyl cellulase and xylanase in the rumen of 12.18: 1: S20 group were significantly higher than those in the control group. The apparent digestibility of NDF and ADF in the neutral detergent fiber group and the acid detergent fiber group were significantly higher than those in the control group (12.13% and 8.72%), respectively. The apparent digestibility of NDF and ADF were 6.35% and 2.91% higher than that of the control group, respectively. It can be concluded that the addition of active yeast products to the diet can significantly reduce the ration of feed consumption and weight gain, reduce the feeding cost and increase the economic benefit. Under the experimental conditions, 20 g / (head d) active yeast added to the diet had the highest gain in weight gain.
【作者单位】：广东溢多利生物科技股份有限公司;
【基金】：农业部公益性行业(农业)专项(201503134)
【分类号】：S823.5

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