摘要
采用常规方法测定四川9个黑山羊品种(群体)乳常规营养组分含量.采用碱性尿素电泳方法分析酪蛋白多态性.结果表明,四川9个黑山羊乳蛋白含量范围为41.36～46.37 g/L,以营山黑山羊最低(41.36 g/L),金堂黑山羊最高(46.37g/L),差异极显著(P＜0.01);乳糖含量范围为44.00～47.30 g/L,以建昌黑山羊最低(44.00 g/L),金堂黑山羊最高(47.30g/L),差异不显著(P＜0.05);乳脂率范围为55.45～60.52 g/L,其中以白玉黑山羊最低(55.45 g/L),自贡黑山羊最高(60.52 g/L),差异极显著(P＜0.01).乳蛋白组分:CN(68.42%～71.01%),β-Lg(14.46%～15.87%),IgG(7.04%～7.34%),α-La(5.35%～5.96%),SA(2.02%～2.40%).各蛋白组分经显著性检验,营山黑山羊和嘉陵黑山羊的CN相对含量显著低于其他黑山羊品种(群体)(P＜0.01).在9个山羊品种(群体)中α-酪蛋白基因型存在多态性,多态型对乳脂率影响显著,其中α-酪蛋白DD型乳脂率显著低于CC型、CD型(P＜0.05).
This research analyzed the rate of the main component in the milk of Black Goats in 9 places in Sichuan .It analyzed the rate of the main lactic protein and genetic polymorphism of casein in the milk of Black Goats in Sichuan by means of the alkalescent urea electrophoresis. The results showed that the scope of lactic protein content was 41.36~46.37g/L,the lowest was black goat in Yingshan (41.36g/L),the highest was black goats in Jintang (46.37), the difference was remarkable (P<0.01); The scope of lactose content was 44.00~47.30g/L, the lowest was Black Goat in Jianchang (44.00g/L),the highest was Black Goat in Jintang (47.30g/L), the difference was not notably (P>0.05);The scope of butterfat rate was 55.45~60.52g/L, the lowest was Black Goat in Baiyu (55.45g/L),the highest was Black Goat in Zigong (60.52g/L), the difference was notably (P<0.01). Lacto-protein component: CN(68.42%~71.01%) , β-Lg(14.46%~15.87%), IgG (7.04%~7.34%),α-La(5.35%~5.96%), SA(2.02%~2.40%). The proteins component was examined, the CN comparative content of Black Goat in Yingshan and Jialing was remarkably lower than other Black Goat varieties (community). The genotype of α-CN has the multi-state properties in 9 goats varieties. The genotype of α-casein has the remarkable influence to the butterfat rate. The butterfat rate ofα-CN(DD) is notably lower than CC, CD (P<0.05).
出处
《中国草食动物》
2006年第6期14-16,共3页
China Herbivores
关键词
黑山羊
乳生化组成
酪蛋白多态性
Black Goat
lactic biochemistry component
genetic polymorphism of casein
