小肽对奶牛产奶量、血清生化指标和营养物质消化率的影响  

Effects of Small Peptides on Milk Yield, Serum Indices and Apparent Digestibility of Dairy Cows

作　　者：司丙文[1] 张晓东 张杰 张彦军 付瑶 毕研亮[1] 屠焰[1] SI Bing-wen;ZHANG Xiao-dong;ZHANG Jie;ZHANG Yan-jun;FU Yao;BI Yan-liang;TU Yan(Feed Research Institute,Chinese Academy of Agricultural Sciences,Key Laboratory of Feed Biotechnology,Ministry of Agriculture,Beijing 100081;Hebei Taifeng Biotechnology Co.Ltd.,Handan 056900;Handan Feed Industry Office,Handan 056900;Beijing General Station of Animal Husbandry,Beijing 100107)

机构地区：[1]中国农业科学院饲料研究所,农业部饲料生物技术重点实验室,北京100081 [2]河北肽丰生物科技有限公司,邯郸056900 [3]邯郸市饲料工业办公室,邯郸056900 [4]北京畜牧总站,北京100107

出　　处：《中国奶牛》2019年第9期19-23,共5页China Dairy Cattle

基　　金：奶牛产业技术体系北京市创新团队(BAIC06-2019);现代奶牛高效安全养殖技术应用与示范(2018YFD0501600)

摘　　要：本试验旨在研究小肽对奶牛产奶量、血清生化指标和营养物质消化率的影响。试验选用80头产奶量、泌乳天数和胎次相近的健康荷斯坦牛,随机分成4组,每组20头奶牛。对照组(A组)饲喂基础日粮,B、C和D组在基础日粮基础上分别添加小肽5、10和15g/(头·d),预饲期7d,正试期60d。结果表明,添加小肽提高了奶产量,C组与A组相比,提高了3.21kg/d(P<0.05);小肽增强了奶牛机体免疫力,降低了乳体细胞数,B、C和D组血清中的IgA和IgM含量显著高于A组(P<0.05);C组有机物和酸性洗涤纤维的表观消化率也显著高于A组(P<0.05)。在本试验条件下,综合考虑奶产量、血清生化指标和表观消化率等指标,小肽添加量为10g/(头·d)效果最好。The objective of study was to investigate the effects of small peptides on milk yield,serum indices and apparent digestibility of dairy cows.Eighty Holstein cows with similar milk yield,parity and lactation stage were divided into 4 groups with 20 cows per group.The supplement level of small peptides in control(A)and test groups B,C and D was 0,5,10 and 15g/d/head,respectively.The pretest lasted for 7 days,and the test lasted for 60 days.The results showed as follows:Small peptides could increase milk production,milk yield in group C was significantly increased 3.21kg/d compared with that in control group(P<0.05);Small peptide strengthened the immunity of cow body and reduced the somatic cell number,the content of IgA and IgM in group B,C and D were significantly higher than those in the control group(P<0.05).The apparent digestibility of organics and acid detergent fiber in group C was also significantly higher than that in control group(P<0.05).Based on the data of milk yield,serum indices and apparent digestibility,it can be concluded that the suitable supplement level of small peptides is 10g/d/head in dairy cows in the present study.

关 键 词：小肽 奶牛 生产性能 血清生化指标 表观消化率 

分 类 号：S823.4[农业科学—畜牧学]