| 摘要: |
| 本试验采用聚丙烯酰胺电泳技术,标记了110头奶牛血清运铁蛋白,淀粉酶和乳清β-乳球蛋白遗传位点。结果表明,运铁蛋白 DD 型牛产奶量(5709kg)显著高于 AA 型牛(5204kg),D 基因对 A 的产奶量基因替代平均效应值为242.5kg。β-乳球蛋白以 BB 型牛乳脂率(3.81)和乳蛋白率(3.11)显著为高。B 基因对 A 的基因替代平均效应值:乳脂率为0.10,乳蛋白率为0.22。试验最后制定出各位点优势基因对基因型育种值的回归方程。 |
| 关键词: 奶牛,电泳,运铁蛋白,β-乳球蛋白,产奶量,乳脂率,乳蛋白率 |
| DOI： |
| 分类号: |
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| RELATIONSHIP BETWEEN THE PROTEIN POLYMORPHISMS AND LACTATION PERFORMANCES OF HOLSTEIN COWS |
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Ju Zhiyong Qiu Huai,Ju Zhiyong Qiu Huai
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| Abstract: |
| The polyacrylamide gel electroporesis technique was adopted to mark the polymorphisms of transferrin( Tf ),amylase( Am )and β-latoglobulin( β-Lg )of 110 Holstein cows in this test.It was found that Tf polymorphism had a significant effect on milk production,and that β-Lg polymorphism has also an obvious effect on fat and protein percentages.Cows with Tf DD( 5709 kg )produced more milk than cows with Tf AA( 5204 kg )did.The estimated effect of substituting Tf D for Tf A is 242.5kg.Cows with β-LgBB may have high fat and protein percentages ( 3.81 and 3.11 ) respectively.Effects of substituting β-LgB for β-Lg A are:fatpercentage 0.01,protein percentage 0.22.The regression equations for dominant genes of breeding value of genotypes were eventually obtained in this paper. |
| Key words: Holstenin cows,Electroporesis,Transferrin,β-Lactoglobulin,milk production,fat percentage,protein pecentage |
