Analysis of production traits and microclimate parameters on dairy cattle farms

Biotehnologija u stocarstvu Pub Date : 1900-01-01 DOI:10.2298/bah1904323v

Goran Vučković, T. Bobić, P. Mijić, Mirna Gavran, K. Potočnik, V. Bogdanović, V. Gantner

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Abstract

Aiming determination of the variability of production traits (daily milk yield and composition) and microclimate parameters (ambient temperature and humidity) in the barns; as well as the correlation between the analyzed groups of traits, 1,636,192 test-day records from Simmentals and 1,275,713 test-day records from Holsteins were analysed. Performed analysis indicate high variability of production traits due to cow?s breed, parity as well as breeding region. Also, high variability of microclimate parameters in the barns due to season and breeding region was found. Furthermore, statistically highly significant (p < 0.001) correlations between the production traits and microclimate parameters were determined. Finally, the negative effect of inadequate microclimate on daily milk production was determined in both breeds in all breeding regions. Since genetic evaluation and selection of dairy cattle for heat resistance is only long-term method for heat stress managing, determined effect will be taken into account in the statistical model for estimation of genetic parameters and breeding values.

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奶牛养殖场生产性状及小气候参数分析

旨在确定畜棚生产性状(日产奶量和成分)和小气候参数(环境温度和湿度)的变化;除了分析性状组之间的相关性外，还分析了西蒙塔尔犬的1,636,192个测试日记录和荷尔斯坦犬的1,275,713个测试日记录。进行的分析表明，由于奶牛?S品种，胎次以及繁殖区域。畜舍小气候参数因季节和养殖区域的不同而有较大的变异性。此外，生产性状与小气候参数之间存在显著的相关性(p < 0.001)。最后，在所有养殖区域确定了小气候不足对两个品种日产奶量的负面影响。由于奶牛耐热性的遗传评价和选择只是热应激管理的长期方法，因此在估计遗传参数和育种值的统计模型中要考虑确定的效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Biotehnologija u stocarstvu

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