摘要
选30头经产2～4胎、产期相近、产奶量相近的奶牛随机分成3组,其中2组饲喂高碘日粮.结果表明:在奶牛日粮精料中添加1.0 mg/kg和2.0 mg/kg碘对牛奶的乳脂、乳蛋白、乳糖和SNF无影响;添加2.0 mg/kg碘能显著提高产奶量,而添加1.0 mg/kg碘则无显著影响;添加1.0 mg/kg和2.0 mg/kg碘均极显著提高血碘和乳碘的含量,而且两者存在线性相关(r=0.427,n=30).
Thirty lactating dairy cows, with similar milk yield and parturient time, were randomly divided into three groups with ten cattle per treatment. The results showed that there was no significant effect on conventional ingredients of milk with either 1.0 mg/kg or 2.0 mg/kg iodine supplementation in dietary. Milk yield was heavily improved （P 〈 0.05） with 2.0 mg/kg iodine addition. Both serum iodine and milk iodine were extremely （P 〈 0.01）increased with 1.0 mg/kg and 2.0 mg/kg iodine addition, furthermore, there was a correlation between them with the coefficient r = 0.427 （n = 30）.
出处
《广东农业科学》
CAS
CSCD
2005年第6期85-87,共3页
Guangdong Agricultural Sciences
关键词
奶牛
高碘日粮
血碘
乳碘
产奶量
lactating dairy cows
high iodine dietary
serum iodine
milk iodine
milk yield
