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Animal Husbandry & Veterinary Medicine
2018
(1)
39-42
异麦芽糖对泌乳早期奶牛瘤胃发酵及生产性能的影响
作 者：
郭婷婷;胡丹丹;金亚东;徐晓锋
单 位：
宁夏大学农学院
关键词：
低聚异麦糖;中国荷斯坦奶牛;瘤胃发酵;乳成分
摘 要：
为了研究异麦芽糖对泌乳早期奶牛瘤胃发酵及生产性能的影响,选择4头泌乳天数为20 d、日产奶量30 kg左右、体重550 kg左右的经产(二胎)中国荷斯坦泌乳奶牛,随机分为2组,对照组饲喂基础日粮,试验组在基础日粮中添加60 g异麦芽糖,采用2×2交叉试验设计,每期21d。结果表明:添加异麦芽糖可以显著提高奶牛瘤胃中挥发性脂肪酸(VFA)的含量(P<0.05),显著降低氨态氮(NH_3-N)的含量(P<0.05),其中瘤胃液中丁酸含量有极显著差异(P<0.01),乙酸和丙酸的含量呈上升趋势,但无显著差异(P>0.05)。对奶样进行分析,添加异麦芽糖可以显著提高牛奶的乳脂率(P<0.05),显著降低乳体细胞数(P<0.05),产奶量、乳蛋白和尿素氮浓度均无显著差异(P>0.05)。综上所述,异麦芽糖有助于改善奶牛的瘤胃发酵功能,提高牛奶的乳脂率。
译 名：
Effects of isomaltose on rumen fermentation and production performance of early dairy cows
作 者：
GUO Tingting;HU Dandan;JIN Yadong;XU Xiaofeng;College of Agriculture,Ningxia University;
关键词：
isomaltose;;Chinese holstein cow;;rumen fermentation;;milk composition
摘 要：
The purpose of this study was to investigate the effects of isomaltose on rumen fermentation and production performance of actating dairy cows.Four Holstein cows at 20-days-lactation were randomly divided into 2 groups.The milk production of the test cows was 30 kg.The control group was fed with basal diet.The test group was fed with a test diet supplemented with 60 g in the basal diet and using 2×2 cross test design.Each period was 21 days.The results showed that the content of VFA in rumen of dairy cows was significantly increased by adding isomaltose(P<0.05),and the content of NH_3-N was significantly decreased(P<0.05),and the content of butyric acid in rumen fluid was significantly different(P<0.01).The contents of acetic acid and propionic acid were increased,but no significant difference was found(P>0.05).Milk fat was significantly increased(P<0.05),and the number of milk cells significantly decreased(P<0.05).There was no significant difference in milk yield,milk protein and urea nitrogen concentration between the two groups(P<0.05).In summary,isomaltose helps to improve the rumen fermentation function and the milk fat percentage in dairy cows.
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