复合益生菌对泌乳中后期奶牛生产性能和瘤胃发酵参数的影响

发布时间：2018-05-05 23:07

本文选题：益生菌 + 奶牛　；参考：《中国兽医学报》2017年08期

【摘要】：选用48头产奶量、泌乳天数和胎次相近的泌乳中后期奶牛进行配对设计,分为4组,即对照组(复合益生菌0g/d)、试验1组(复合益生菌10g/d)、试验2组(复合益生菌20g/d)和试验3组(复合益生菌30g/d),试验期60d,其中预饲期7d。结果表明:与对照组相比,复合益生菌能够提高泌乳中后期奶牛的产奶量,同时能够显著提高乳蛋白率、乳糖率和总固形物(P0.05);对血液生化指标无显著影响(P0.05);复合益生菌能显著提高瘤胃中NH_3-N和微生物蛋白(MCP)含量(P0.05);与对照组相比,试验2组的粗蛋白(CP)和粗脂肪(EE)表观消化率均显著提高(P0.05);试验1,2,3组比对照组每头奶牛每天分别获益2.28,4.80和4.09元。以产奶性能、瘤胃发酵参数、营养物质表观消化率和经济效益为主要衡量指标,以每头奶牛日喂20g效果最佳。
[Abstract]:Forty-eight dairy cows with similar milk yield, days of lactation and birth order were selected for pairing design, and were divided into 4 groups. Control group (compound probiotics 0 g / d), test 1 (compound probiotics 10 g / d), test 2 (compound probiotics 20 g / d) and test 3 (compound probiotics 30 g / d), experimental period 60 days, including 7 days of prefeeding. The results showed that: compared with the control group, the compound probiotics could increase the milk yield and the milk protein rate of the cows in the middle and late stage of lactation. Lactose rate and total solids P0.05A; no significant effect on blood biochemical indexes; compound probiotics can significantly increase the content of NH_3-N and microbial protein in rumen (P0.05). The apparent digestibility of crude protein (CPP) and crude fat (EEE) in test group 2 were significantly higher than that in control group (P 0.05), and the benefit of group 1, group 2 and group 2 were 2.284.80 and 4.09 yuan per day, respectively, compared with that of the control group. The main indexes were milk yield, rumen fermentation parameters, apparent digestibility of nutrients and economic benefit.
【作者单位】：浙江大学动物科学学院;
【基金】：浙江省科技厅《反刍动物营养与饲料资源开发》团队特派员专项
【分类号】：S823.5

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