二花脸猪初乳的蛋白质组分研究  

STUDY ON PROTEIN COMPONENTS IN COLOSTRUM OF ERHUALIAN PIG

作　　者：李卫真[1] 邹思湘[1] 汤艾非[1] 韩正康[1] 

机构地区：[1]南京农业大学动物医学系,云南农业大学

出　　处：《南京农业大学学报》1994年第3期81-85,共5页Journal of Nanjing Agricultural University

基　　金：农业部重点实验室资助

摘　　要：测定了８头太湖猪（二花脸）分娩后一周奶中乳糖和蛋白质浓度，并用电泳胶扫描法定量其各种蛋白组分。结果显示，脱脂奶中蛋白质浓度随泌乳进行而降低，乳糖浓度变化与之呈反相关（ｒ＝－０．８６８，Ｐ＜０．０１）。分娩后第１ｄ免疫球蛋白（Ｉｇｓ）最高，之后急剧下降。但分娩后前４ｄＩｇｓ浓度，以及一周内总酪蛋白（ｔＣＮ），α－乳清蛋白（α－ＬＡ）和β－乳球蛋白（β－ＬＧ）的浓度，前３ｄ清蛋白（ＳＡ）和乳铁蛋白（ＬＦ）的浓度都显著高于相应组分在第２０ｄ的浓度（Ｐ＜０．０５或Ｐ＜０．０１）。在２０头二花脸和１６头杂交猪（大白×二花脸）奶中观察到ａ，ｂ和ｄ三种特异高分子量蛋白，并有ｂ，ｄ，ａ＋ｂ，ｂ＋ｄ和ａ＋ｄ等５种类型，其中ｂ＋ｄ类型猪占实验二花脸猪的８０％。Erhualian pigs were used in this experiment to determine the concentration of lactose and protein in milk and to analyse milk protein componentS by scanning electrophoretic gel during a week after parturition.The concentration of protein in skim milk seemed to decline with lactation, while the level of lactose changed in a reverse way(r=-0.868,P<0.01).Igs concentration was highest at day 1,then sharply decreased,but its concentration in the first 4 days, total CN,α-LA,β-LG within a week as well as SA,LF in the first 3 days were much higher than their corresponding components at day 20 (P<0.05 or P<0.01).3 kinds of variant HMW protein of milk,a,b and d were observed among 20 Erhualian and 16 cross breed pigs,and there were b,d,a+b,b+d and a+d,5types, b+d of which accounted for 80% Erhualian pigs investigated.

关 键 词：猪 二花脸猪 初乳 蛋白质 

分 类 号：S828.45[农业科学—畜牧学]