N1型纳豆芽孢杆菌对泌乳期奶牛产奶量及乳品质的影响  

Effects of Supplementation of Bacillus Subtilis Natto on Milk Production and Composition of Lactating Dairy Cow

作　　者：栾广春[1,2] 王加启[1] 卜登攀[1] 周振峰[1] 魏宏阳[1] 周凌云[1] 

机构地区：[1]中国农业科学院北京畜牧兽医研究所动物营养学国家重点实验室,北京100193 [2]东北农业大学动物科技学院,哈尔滨150030

出　　处：《中国畜牧兽医》2009年第10期12-15,共4页China Animal Husbandry & Veterinary Medicine

基　　金："十一五"国家科技支撑计划(2006BAD04A032006BAD12B08);公益性行业专项研究(Nyhyzx07-036)

摘　　要：试验旨在研究N1型纳豆芽孢杆菌(Bacillus subtilis natto)对泌乳期奶牛生产性能及乳品质的影响。试验选用泌乳期、胎次、产奶量、体重相近的荷斯坦奶牛36头,试验设计采用完全随机区组设计,分成3个处理组,分别是试验1组添加N1型纳豆芽孢杆菌固体制剂30 g,试验2组添加N1型纳豆芽孢杆菌固体制剂60 g,对照组不添加。试验期为60 d,预试期10d,分别在试验期的0、306、0 d采集奶样,每周测定1次产奶量。试验结果表明,日粮中添加N1型纳豆芽孢杆菌能够提高产奶量、提高乳脂校正乳产量(P<0.05);提高乳脂含量、乳蛋白含量、干物质含量,提高乳脂产量、乳蛋白产量(P<0.05)、干物质产量(P<0.05),对乳糖含量没有影响;牛奶中体细胞数有降低趋势。36 cows with similar age, party and day in milk （DIM） were used to study the effect of dietary Bacillus subtilis natto on milk production and milk composition in lactating dairy cows. All cows were randomly allocated to 3 groups. The feeding trial lasted for 60 days. The milk samples were collected in 0,30,60 d, and the milk production was measured every week. The results showed that milk production, milk fat and milk protein were higher than those which are from cows in control whereas somatic cell counts decreased.

关 键 词：纳豆芽孢杆菌 牛奶品质 生产性能 

分 类 号：S816.79[农业科学—饲料科学]