摘要
对呼和浩特郊区一牧场30头荷斯坦乳牛进行6个月单个采样,共得427个有效样本,检测乳样中体细胞数、酪蛋白(包括-α酪蛋白、-β酪蛋白、-κ酪蛋白)、乳清蛋白、总蛋白、游离氨基氮、酪蛋白/总蛋白和乳清蛋白/总蛋白。结果表明,乳中总蛋白、游离氨基氮含量及乳清蛋白/总蛋白与SCC呈显著正相关;酪蛋白/总蛋白与SCC呈显著负相关;乳清蛋白含量与SCC呈极显著正相关。酪蛋白、-α酪蛋白/酪蛋白、-β酪蛋白/酪蛋白、-κ酪蛋白/酪蛋白与SCC的相关性不显著。酪蛋白含量与总蛋白含量呈极显著的正相关,与游离氨基氮含量、乳清蛋白/总蛋白呈极显著的负相关。乳清蛋白含量与游离氨基氮、总蛋白含量呈极显著正相关。
427 milk samples were collected from 30 Holstein dairy cows in a farm of Huhhot suburb during May to October in 2005. Milk somatic cell counts, total protein,casein （including α-cn,β-cn and κ-cn）, whey protein,free amino nitrogen were determined. The results showed that total milk protein, free amino nitrogen and whey protein/total protein were much significantly positively related with SCC. Casein/total protein was much significantly negatively related with SCC. Whey protein was highly significantly positively related with SCC.Casein content, α-cn/casein,β-cn/ casein, κ-cn/ casein had no relationship with SCC.Casein content had highly significantly positive correlation with total protein content, and highly significantly negative correlation with free amino nitrogen content and whey protein/total protein; Whey protein content had highly significantly positive correlation with free amino nitrogen and total protein content.
出处
《中国乳品工业》
CAS
北大核心
2006年第6期27-31,共5页
China Dairy Industry
关键词
体细胞数
乳蛋白
相关性
milk somatic cell counts
milk protein
correlation
