摘要
该试验旨在研究杂交构树发酵饲料对泌乳奶牛生产性能、乳清抗氧化能力及生化指标的影响。试验选取胎次、泌乳天数和产奶量相近的健康荷斯坦奶牛20头,随机分为4组,每组5个重复。对照组饲喂全混合日粮(Total Mixed Rations,TMR),试验Ⅰ、Ⅱ、Ⅲ组在TMR中分别添加4%、8%、12%的杂交构树发酵饲料,预试期5 d,试验期40 d。结果表明:(1)与对照相比,试验Ⅰ、Ⅱ、Ⅲ组产奶量、乳脂率、乳蛋白率和干物质差异均不显著(P>0.05),试验Ⅱ组非脂固体显著降低(P<0.05),试验Ⅰ组的乳糖率显著提高(P<0.05)、尿素氮含量显著降低(P<0.05),试验Ⅲ组体细胞含量显著降低(P<0.05),且试验Ⅲ组体细胞含量显著低于试验Ⅰ组(P<0.05);(2)与对照组相比,试验Ⅰ、Ⅱ、Ⅲ组的乳清SOD无显著变化(P>0.05),试验Ⅲ组MDA显著降低(P<0.05)、TAC显著升高(P<0.05);(3)相比对照组,试验Ⅱ、Ⅲ组乳清生化指标ALT均显著降低(P<0.05),试验Ⅰ组AST显著降低(P<0.05),试验Ⅰ、Ⅱ、Ⅲ组AKP和蛋白定量均无显著变化(P>0.05)。综上所述,日粮中添加8%和12%的杂交构树发酵饲料可改善乳成分、乳清抗氧化和生化指标。
This experiment was conducted to study the effects of B.kazinoki×B.papyrifera fermented feed on the production performance,antioxidant capacity and biochemical indexes of dairy cows.Twenty healthy Holstein cows were divided into 4 groups randomly(each group of 5).They had the same number of parities and lactation days and milk production.The control were fed mixed diet(Total Mixed Rations,TMR),experimental groupⅠ,Ⅱ,Ⅲwere added 4%,8%and 12%in TMR B.kazinoki×B.papyrifera fermented feed respectively.Preliminary experiment lasted 5d,and the experiment lasted 40 d.Results showed:(1)Compared with controls,milk yield,milk fat,milk protein percentage and dry matter of experimental groupⅠ,Ⅱ,Ⅲhad no significant difference(P>0.05).The solid no fat(SNF)of experimentalⅡsignificantly reduced(P<0.05)milk sugar rate of groupⅠincreased significantly(P<0.05),urea nitrogen content decreased significantly(P<0.05),the content of somatic cell of groupⅢsignificantly reduced(P<0.05),and the content of somatic cell in groupⅢwas significantly lower than that of groupⅠ(P<0.05).(2)Compared with the control,serum SOD in the three experimental groups had no significant change(P>0.05),MDA in groupⅢdecreased significantly(P<0.05),TAC significantly increased(P<0.05).(3)Compared with the control,the ALT of serum biochemical indexes in group II andⅢwere significantly lowered(P<0.05),the AST in groupⅠdecreased significantly(P<0.05).AKP and protein quantitative in the three groups were not significantly changed(P>0.05).In conclusion,the diets with 8%and 12%B.kazinoki×B.papyrifera fermented feed can improve milk composition,whey antioxidant capacity and biochemical indexes.
作者
宋柏螈
陶振阳
任洪涛
王毅航
赵路
陈万光
王占彬
SONG Boyuan;TAO Zhenyang;REN Hongtao;WANG Yihang;ZHAO Lu;CHEN Wanguang;WANG Zhanbin(College of Animal Science and Technology,Henan University of Science and Technology,Luoyang 471023,China;Life Science Department,Luoyang Normal College,Luoyang 471022,China)
出处
《家畜生态学报》
北大核心
2020年第8期45-50,共6页
Journal of Domestic Animal Ecology
基金
国家重点研发计划专项(2018YFD0500600)
河南科技大学横向课题(22010055)。
关键词
杂交构树
奶牛
生产性能
抗氧化指标
生化指标
B.kazinoki×B.papyrifera
dairy cows
production performance
antioxidant capacity
biochemical indexes
