摘要
试验选取9头泌乳早期处于热应激的荷斯坦牛,采用3×3拉丁方设计,分别饲喂基础日粮(对照组)和在基础日粮中添加5g/d和10g/d烟酸日粮,研究添加烟酸对奶牛生产性能影响。结果表明:添加5g/d和10g/d烟酸可使奶牛产奶量分别提高13.20%和9.39%(P<0.05);而4%标准乳量无显著差异(P>0.05);添加烟酸对乳蛋白和乳脂率无显著影响(P>0.05)。
Nine Hostein cows in early lactating under heat stress were selected in a 3×3 Latin square design to study effects of 5 g/d and 10 g/d nicotinic acid（niacin） supplemented in basal diets on milk performance.The results showed that milk yield increased 13.20 % and 9.39 %（P 〈 0.05）respectively,but 4 % fat corrected milk yield was not affected （P 〉 0.05 ） ; Dietary niacin had no effect on milk fat and protein percentage.
出处
《中国饲料》
北大核心
2007年第7期24-25,共2页
China Feed
关键词
烟酸
奶牛
产奶性能
niacin
dairy cattle
milk performance
