Analysis of production traits and microclimate parameters on dairy cattle farms | Zendy

Goran Vučković | Zendy; Tina Bobić | Zendy; Pero Mijić | Zendy; Mirna Gavran | Zendy; Klemen Potočnik | Zendy; Vladan Bogdanović | Zendy; Vesna Gantner | Zendy

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Analysis of production traits and microclimate parameters on dairy cattle farms

Author(s) -

Goran Vučković,

Tina Bobić,

Pero Mijić,

Mirna Gavran,

Klemen Potočnik,

Vladan Bogdanović,

Vesna Gantner

Publication year - 2019

Publication title -

biotechnology in animal husbandry

Language(s) - English

Resource type - Journals

eISSN - 2217-7140

pISSN - 1450-9156

DOI - 10.2298/bah1904323v

Subject(s) - microclimate , breed , heat stress , biology , zoology , heritability , milk production , milking , dairy cattle , genetic correlation , environmental science , veterinary medicine , agronomy , ecology , genetic variation , medicine , genetics , biochemistry , gene

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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