J. Bezdíček, L. Stádník, A. Makarevich, E. Kubovičová, F. Louda, Z. Hegedüšová, R. Holásek
The effect of mild temperature stress on the ovarian activity in cows
Číslo: 3/2019/2020
Periodikum: Journal of Microbiology, Biotechnology and Food Sciences
DOI: 10.15414/jmbfs.2019/20.9.3.639-642
Klíčová slova: temperature stress; corpus luteum; embryo transfer
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embryos; morulae and blastocysts) in cows. The evaluation included 54 Holstein cows superovulated and flushed at one farm in the
Czech Republic in three different temperature periods in flushing day (mild hot season THI = 75.66; season with optimal temperature
THI = 68.85; season with lower temperature THI = 45.56). The data were analysed using the PROC GLM of Statistica®
. The statistical
model included the effect of season and other factors (age; condition; breeding value) on the studied reproduction traits. The results
showed significantly higher ovarian activity in the cooler period of the year than in periods of mild temperature stress. There was also a
non-significantly better reproduction result in younger animals under optimal condition.