发酵小麦酒精糟对泌乳奶牛产奶量和乳品质的影响  

Effects of Fermented Wheat Distiller’s Grains on Milk Yield and Milk Quality of Lactating Cows

作　　者：代张超 闫一博 陈美琪 盛环宇 丁小玲[1] 郝胜平 吴相民 李吕木[1] DAI Zhangchao;YAN Yibo;CHEN Meiqi;SHENG Huanyu;DING Xiaoling;HAO Shengping;WU Xiangmin;LI Lyumu(School of Animal Science and Technology,Anhui Agricultural University,Hefei 230036,China;Nanqiao Cow Farm,Chuzhou 239063,China)

机构地区：[1]安徽农业大学动物科技学院,合肥230036 [2]安徽滁州南谯奶牛场,滁州239063

出　　处：《动物营养学报》2020年第1期259-266,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：安徽省科技攻关项目(1704a07020064)

摘　　要：本试验旨在研究发酵小麦酒精糟对泌乳奶牛产奶量和乳品质的影响。试验选用1~3胎、泌乳180 d左右、平均泌乳量(33.58±7.44)kg相近、体重相近的荷斯坦黑白花奶牛180头,随机分为对照组、试验1组和试验2组,对照组饲喂原场全混合日粮,试验1组和试验2组每头牛每天分别用1和2 kg发酵小麦酒精糟等能等氮替代原场基础精料,预试期4 d,正试期24 d。正试期每天记录奶牛的采食量,每6天测定1次产奶量,每8天采集1次乳样,测定乳品质。结果表明:试验各个阶段及全期,各组间采食量和产奶量差异均不显著(P>0.05),但试验1组各个阶段及全期的产奶量较高。第8、16天,各组间乳成分含量差异不显著(P>0.05)。第24天,试验2组乳尿素氮含量显著高于对照组和试验1组(P<0.05)。结果提示,在泌乳奶牛饲粮中用发酵小麦酒精糟等能等氮替代1 kg原场基础精料较为可行,可在一定程度上提高产奶量和改善乳品质。The present study was conducted to investigate the effects of fermented wheat distiller’s grains on milk yield and milk quality of lactating cows.A total of 180 Holstein dairy cows with parity 1 to 3,180 days of lactation,similar average milk yield of(33.58±7.44)kg and body weight were randomly divided into control group,trial group 1 and trial group 2.The control group was fed an original total mixed ration,each cow in trial group 1 and trial group 2 was fed a diet with 1 and 2 kg fermented wheat distiller’s grains to replace the basic concentrate,respectively.The diets were calculated to be isonitrogenous and isoenergetic.The pre-test period was 4 days and the trial period was 24 days.During the trial period,the feed intakes of cows were recorded every day,the milk yields were measured every 6 days,and milk samples were collected every 8 days to determine the milk quality.The results showed that there was no significant difference in feed intake and milk yield among groups at all stages and throughout the experiment(P>0.05),but milk yield in the trial group 1 was higher at all stages and throughout the experiment.There was no significant difference in milk composition between groups on days 8 and 16(P>0.05).On day 24,the milk urea nitrogen content in trial group 2 was significantly higher than that in control group and trial group 1(P<0.05).The results show that it is feasible to replace 1 kg of basic concentrate with isonitrogenous and isoenergetic fermented wheat distiller’s grains in dairy cow diets,which can improve milk yield and milk quality to a certain extent.

关 键 词：发酵小麦酒精糟 泌乳奶牛 产奶量 乳品质 

分 类 号：S823[农业科学—畜牧学]