不同类型日粮对奶牛血液生化指标及生产性能的影响Effects of different diets on blood biochemical Index and production performance in dairy cows
姜士凯;王林枫;张鹏;曹菁菁;张晓梅;卜登攀;赵小伟;
摘要(Abstract):
试验选取20头中国荷斯坦奶牛,随机分为2组,每组10头.分别为单一玉米秸秆组(CS)和混合粗饲料组(MF).试验共进行7周,其中预试期2周,正试期5周.采集血液样品和乳样,测定血液生化指标和乳常规组分.结果表明:MF组奶牛血液中血糖和总胆固醇含量显著高于CS组(P<0.05),血清尿素氮和β-羟丁酸含量极显著低于CS组(P<0.01);MF日粮能显著提高奶牛产奶量、乳脂率和总固形物含量(P<0.05),尿素氮和体细胞数显著低于CS组(P<0.05),其余指标2个组间差异不显著(P>0.05).说明MF日粮有利于维持血糖和血清尿素氮的正常水平,并能部分改善乳品质、提高生产性能.
关键词(KeyWords): 奶牛;不同类型日粮;血液生化指标;生产性能
基金项目(Foundation): 国家“973”计划项目(2011CB100802)
作者(Authors): 姜士凯;王林枫;张鹏;曹菁菁;张晓梅;卜登攀;赵小伟;
DOI: 10.16445/j.cnki.1000-2340.2014.02.019
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