The quality of boar ejaculates collected at different times of the day
Journal Title: Journal of Animal Science, Biology and Bioeconomy - Year 2015, Vol 33, Issue 1
Abstract
The purpose of the research was to determine the value of ejaculates collected from breeding boars at different times of the day. The materials used for the study were gathered during the process of breeding boars. There were 60 boars of Polish Large White, Polish Landrace, Duroc, Pietrain breeds and their crossbreeds (Duroc × Pietrain and Pietrain × Duroc) as well as a synthetic line Hypor. 9953 of boar ejaculates were examined between 2011–2013. The studies showed that the time of day when the collection takes place affects the volume of the ejaculate. More semen was obtained during collections in the morning. The time of collection during the day did not significantly affect other semen parameters; it showed only a trend toward a higher concentration of sperm in specimens collected in the afternoon. Differences in the parameters of specimens collected at different times of the day had a small effect on the number of insemination doses produced and the value of the obtained doses from a single ejaculate.
Authors and Affiliations
Kazimierz Pokrywka, Krzysztof Tereszkiewicz, Piotr Molenda
Keywords
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