Genetic parameters of rabbit semen traits and male fertilising ability

Animal Reproduction Science
Jean-Michel BrunMichèle Theau-Clément

Abstract

This study aimed to estimate genetic parameters for rabbit semen production, semen characteristics and fertilising ability following artificial insemination. It involved five successive batches of 30-36 bucks each, 22 weeks of semen collection, and 11 weeks of semen recording per batch. Semen analyses were based on 2312 ejaculates. A total of 2019 inseminations were performed on 674 females with semen from 236 ejaculates from 128 bucks. Heritability estimates of semen traits ranged from 0.05 to 0.18. At approximately 0.05-0.06 for pH, volume and mass motility, they were higher for concentration (0.10) and the total number of sperms per ejaculate (0.12), and even higher for motility traits based on computer-assisted semen analysis. The percentage of motile sperms had the highest heritability (0.18) and appeared to be a good candidate criterion to select for both sperm number and motility. The heritability estimates were close to zero for all three criteria of fertilising ability: fertility (F), prolificacy (live births, LB) and their product (LB per insemination). A permanent environmental effect of the male seemed to be higher for LB (0.04) than for F (0.01). The rabbit does accounted for approximately 10% of the variance of th...Continue Reading

References

May 13, 2006·Reproduction in Domestic Animals = Zuchthygiene·K AlmM Andersson
Sep 22, 2006·Theriogenology·Jean-Michel BrunCatherine Larzul
Jan 11, 2011·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·R LavaraM Baselga
Jul 11, 2012·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·M Piles, L Tusell
Apr 12, 2015·Animal Reproduction Science·M Theau-ClémentJ M Brun

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Citations

Nov 25, 2020·Animals : an Open Access Journal From MDPI·Mateo Ruiz-ConcaManuel Alvarez-Rodriguez

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