Effect of changing female stimulus on intensive semen collection in young Murciano-granadina male goats

Journal of Animal Science
M A SilvestreE A Gómez

Abstract

The aim of this research was to study the effect of changing female stimulus on libido and semen characteristics from young Murciano-granadina male goats submitted to intensive semen collection using females not in estrus as teasers. Males were submitted to two different sexual stimulation procedures. In the first procedure, the same doe was used as the female stimulus for three consecutive presentations. In the second, the doe was replaced after the second presentation by a new female. Semen volume, concentration, forward progressive motility, and live spermatozoa were scored. To analyze reaction time (RT), three types of analysis were performed. In the first one, RT was analyzed by multifactor ANOVA, taking as a missing value 300 s when a buck did not ejaculate. In the second, RT also was analyzed by multifactor ANOVA, but data from males that did not ejaculate were removed. In the third, a Cox Survival analysis was carried out by censoring data when a buck did not ejaculate within 5 min of entering the test arena. A decrease in semen volume and sperm concentration in the successive ejaculations was observed, being highly marked in the third ejaculation independent of the stimulation procedure (0.62 vs. 0.38 and 0.43 mL, and ...Continue Reading

References

Jan 1, 1978·Journal of Dairy Science·R W EverettR H Foote
Mar 20, 1976·The Veterinary Record·J J Jennings, J McWeeney
Nov 1, 1992·Journal of Animal Science·E O PriceM R Dally
May 1, 1992·Journal of Reproduction and Fertility·A J RitarI G White
Jun 13, 2003·Biology of Reproduction·Eiman M-E Aboagla, T Terada

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Citations

Feb 22, 2014·Animal : an International Journal of Animal Bioscience·E MocéJ K Graham
Dec 19, 2020·Animals : an Open Access Journal From MDPI·Eva MocéErnesto A Gómez

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