黑森州德国黑斑牛皱胃移位遗传力的估计。

T Geishauser, M Diederichs, R Beuing
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引用次数: 0

摘要

对30个饲养德国黑斑牛的黑森牧群的皱胃移位的遗传程度进行了估计,其中皱胃移位比正常情况下发生的频率更高。通过调查母亲和女儿之间的相似度来进行估计。根据母亲和女儿的不存在或发生皱胃移位,共使用了2626对。使用象限平方确定每个畜群的四点相关系数。然后根据相关系数计算算术平均值。当相关系数在15个以上的调查中变化小于0.02个单位时,假设相关系数是稳定的,从而限制了调查的畜群数量。然后利用相关系数计算遗传力。15个畜群的相关系数比较稳定;最后6个畜群的检出率为0.12(0.117 ~ 0.124)个单位。据此,取瘤胃位移的遗传力为h2 = 0.24。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
[Estimation of the heritability of abomasal displacement in German black-pied cattle in Hesse].

The degree of heritability of displacement of the abomasum was estimated in 30 Hessian herds breeding German Black Pied cattle in which displacement of the abomasum occurred more frequently than normal. Estimation was made by investigating the similarity between mothers and daughters. A total of 2626 pairs were used for this investigation, based on the absence or occurrence of abomasal displacement in the mothers and daughters. The fourpoint correlation coefficient was determined for each herd using a quadrant square. The arithmetic means were then calculated from the correlation coefficients. The number of herds examined was limited by assuming the correlation coefficient to be stable when it varied by less than 0.02 units during the investigation of more than 15 herds. Heritability was then calculated using the correlation coefficient. The correlation coefficient was stable after examining 15 herds; for the examination of the last six herds, it was 0.12 (0.117-0.124) units. Based on this, the heritability of displacement of the abomasum in the herds was taken to be h2 = 0.24.

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