摘要
本试验采用3×3拉丁方设计,将9头中国荷斯坦奶牛分为3组,分别饲喂对照组基础日粮,补加蛋氨酸锌日粮(锌含量400mg),补加氧化锌日粮(锌含量400mg),研究补饲不同锌源对奶牛产奶量及乳品质的影响。结果表明,不同来源的锌对奶牛产奶量均有不同程度提高,蛋氨酸锌提高幅度大于氧化锌,但差异不显著(p>0.05);对乳脂率无明显影响;补锌可增加乳中锌的含量,蛋氨酸锌比氧化锌明显(p<0.05)。
Nine Chinese Holstein cows were used in a replicated 3×3 Latin square design to study the effects of different zinc sources on milk yields and milk quality. Based diets supplemented with Zinc methionine（Zn-Met） and Zinc oxide（ZnO） containing 400mg zinc. The results showed that different zinc sources could increase milk yields, Zn-Met was better than ZnO, but not significant（p〉0.05）. No significant effect on milk fat rate （p〉0.05）. Zinc added to diets could increase the content of zinc in milk, significant effects were observed Zn-Met comparing with ZnO （p 〈 0.05）.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2005年第9期202-203,共2页
Food Science
关键词
奶牛
锌源
产奶量
乳品质
cows
zinc sources
milk yields
milk quality
