不同饲料添加剂对马山黑山羊生产性能、乳成分及甲烷排放的影响

Effects of different feed additives on production performance,milk composition and methane emission in mashan black goats

文章旨在研究不同饲料添加剂对马山黑山羊生产性能、乳成分及甲烷排放的影响。试验选择健康且体重一致的泌乳期马山黑山羊40只,随机分为4组,每组10只,每重复1只。对照组饲喂基础日粮,试验组在基础日粮中分别添加0.1%的复合有机酸、复合中草药和复合益生菌,预饲期10 d,正试期45 d。结果表明:在生产性能方面,与对照组相比,有机酸、中草药和益生菌组产奶量显著提高(P<0.05),益生菌组料奶比显著降低(P<0.05);乳成分方面,与对照组相比,中草药和益生菌组乳脂率和乳蛋白均显著提高(P<0.05);在甲烷排放方面,与对照组相比,3个试验组甲烷的排放量均显著降低(P<0.05)。综合比较,复合益生菌组对马山黑山羊生产性能、乳成分改变及减少甲烷排放的影响最显著。

The experiment aims to investigate the effects of different feed additives on the production performance,milk composition,and methane emissions of goats.Select 40 healthy and consistent lactating goats and randomly divide them into 4 groups,with 10 goats in each group.The control group was fed with a basic diet,while the experimental group was supplemented with 0.1%organic acids,Chinese herbal medicine,and probiotics on the basis of the basic diet.The pre trial period was 10 days,and the main trial period was 45 days.The results showed that in terms of production performance,the milk production of the three experimental groups was significantly improved compared to the control group(P<0.05),while the feed to milk ratio of the probiotic group was significantly reduced(P<0.05);In terms of the impact on milk composition,the traditional Chinese medicine and probiotics groups showed a significant increase in milk fat percentage and milk protein compared to the control group(P<0.05);In terms of methane emissions,all three experimental groups showed significant reductions compared to the control group(P<0.05).Overall comparison,the probiotic group has the most significant impact on goat production performance,changes in milk composition,and reduction of methane emissions.