牛催乳素受体(PRLR)基因HinfⅠ多态性与奶牛生产性能相关性研究

畜牧兽医学报 ›› 2007, Vol. 38 ›› Issue (9): 888-892.doi:

牛催乳素受体(PRLR)基因HinfⅠ多态性与奶牛生产性能相关性研究

张佳兰;昝林森;申光磊

1西北农林科技大学动物科技学院，杨凌 712100；2长江大学动物科学学院，荆州 434025

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-09-25 发布日期:2007-09-25

Association between Hinf Ⅰ Polymorphism of Prolactin Receptor (PRLR) Gene and Performance of Dairy Cows

ZHANG Jia-lan;ZAN Lin-sen;SHEN Guang-lei1

1College of Animal Science and Technology, Northwest A& F University, Yangling 712100, China；2College of Animal Science, Yangtze University, Jingzhou 434025,China

Received:1900-01-01 Revised:1900-01-01 Online:2007-09-25 Published:2007-09-25

摘要/Abstract

摘要： 采用PCR-RFLP方法检测了牛催乳素受体（PRLR）基因intron 8多态性。结果表明：中国荷斯坦牛、加拿大荷斯坦和澳洲荷斯坦牛群体中Hinf Ⅰ酶切后均有A和B两个等位基因存在。利用最小二乘分析研究了该多态位点对奶牛305 d产奶成年当量、乳脂肪率、乳蛋白率、初次配种日龄和初次产犊日龄的影响。结果表明：不同基因型个体的乳脂率、初次配种日龄和初次产犊日龄的差异均未达到显著水平，但呈现出AA>AB>BB的趋势。BB型个体的305 d成年当量与AA型、AB型个体有显著差异（P<0.05），BB型个体的乳蛋白率与AA型、AB型个体有极显著差异（P<0.01）。对305 d成年当量、乳脂肪率、乳蛋白率、初次配种日龄和初次产犊日龄A基因的加性效应分别为296.00 kg/胎次、0.08%、-0.14%、4.55 d/头、15.10 d/头，A等位基因的显性效应为259.80 kg/胎次、0.07%、-0.10%、0.95 d/头和4.90 d/头。

Abstract: The polymorphism of intron 8 in prolactin receptor (PRLR) gene was detected by PCR-RFLP. A Hinf-I RFLP was detected in intron 8 and the polymorphic locus is common in all detected lines. Association between the founded Hinf-I RFLP in intron 8 and 305 days matured equivalency (ME), fat percent (F%), protein percent (P%), the first mating days (FMD) and the first calving days (FCD) was tested by least square analysis. No significant difference between Hinf-I RFLP and F%, FMD and FCD were founded in present study, but regular effects was showed. Individuals with BB genotype had lower ME (P<0.05) and higher P% (P<0.01). The additive effects of allele A was 296.00 kg/parity, 0.08, -0.14%, 4.55 d/cow, 15.10 d/cow for ME, F%, P%, FMD and FCD respectively. The dominant effects of allele A was 259.80 kg/parity, 0.07, -0.10%, 0.95 d/cow and 4.90 d/cow respectively.

张佳兰;昝林森;申光磊. 牛催乳素受体(PRLR)基因HinfⅠ多态性与奶牛生产性能相关性研究[J]. 畜牧兽医学报, 2007, 38(9): 888-892.

ZHANG Jia-lan;ZAN Lin-sen;SHEN Guang-lei. Association between Hinf Ⅰ Polymorphism of Prolactin Receptor (PRLR) Gene and Performance of Dairy Cows[J]. ACTA VETERINARIA ET ZOOTECHNICA SINICA, 2007, 38(9): 888-892.

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