摘要
随机选择泌乳早期、中期和后期的中国荷斯坦头胎奶牛96头,对其奶样进行分析。结果表明,泌乳早期和泌乳中期的乳脂率差异显著(P<0.05),泌乳后期和泌乳早期、泌乳中期的乳脂率差异不显著(P>0.05);各个泌乳时期的乳蛋白率和体细胞数差异均不显著(P>0.05)。
Random selected early lactation period Holstein cows of one-child 13, mid-lactation period 46, late lactation period 37, their milk samples for analysis. The results of milk samples for analysis： average milk fat rate of early lactation period was 3.8377%, mid-lactation period, 3.4461%, late lactation period ,3.5973%, milk fat rate of early lactation period and mid-lactation period was significandy （P 〈 0.05）, milk fat rate of late lactation period and early lactation period, mid-lactation period was no significant differences （P 〉 0.05）; the average milk protein rate was 3.0300%, 3.0228%, 3.1327% respectively, milk protein rate during lactation periods was no significant differences （P 〉 0.05）; the average number of somatic cell was 141.3462 million / mL,69.5891 million / mL, 85.8351 million / mL respectively, somatic cell count during lactation periods was no significant differences （P 〉 0.05）.
出处
《中国乳品工业》
CAS
北大核心
2010年第5期20-21,25,共3页
China Dairy Industry
基金
国家科技支撑计划项目(2008BADB2B03)
国家自然科学基金(30860186)
内蒙古自然基金(200607010510)
内蒙古人才基金
关键词
中国荷斯坦牛
泌乳时期
乳脂率
乳蛋白率
体细胞数
chinese Holstein cows
lactation period
fat percentages
protein percentages
somatic cell count
