Effect of breed, age, season and region on sperm morphology in 11,387 bulls submitted to breeding soundness evaluation in Australia
| Autor: | V.E.A. Perry, Kelli A. Prosser, Judy Felton-Taylor, Sheridan Gentili, Katrina J. Copping, Juan H. Hernandez-Medrano, Paula E. Macrossan |
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| Přispěvatelé: | Felton-Taylor, Judy, Prosser, Kelli A, Hernandez-Medrano, Juan H, Gentili, Sheridan, Copping, Katrina J, Macrossan, Paula E, Perry, Viv EA |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Male
Aging endocrine system Sperm abnormality Biology 03 medical and health sciences 0302 clinical medicine Animal science Food Animals Animals Small Animals reproductive and urinary physiology bull sperm morphology 030219 obstetrics & reproductive medicine Sperm Count Normal sperm Equine urogenital system Australia 0402 animal and dairy science 04 agricultural and veterinary sciences Spermatozoa 040201 dairy & animal science Breed Sperm Motility Sperm morphology Herd Cattle Animal Science and Zoology Seasons |
| Popis: | This study reports the distribution of sperm morphology defects by breed, age, season and region of 11,387 bulls in 500 herds in Australia and near Pacific Islands during annual BBSE. Bull location was divided into 4 broad climatic regions based upon temperature, vegetation and climatic risk. Taking into account the impact of age, season, region, and breed there were differences between breeds in both percent morphologically normal sperm and in some individual categories of sperm abnormality (P < 0.001). Independent of breed, season and region, proximal droplets were significantly increased in bulls less than 20 months of age. This is the first study to comprehensively collect data from this wide geographical area and compare sperm morphology profiles among the Bos indicus and Bos taurus breeds. The findings of this study will act as a guide for veterinary practitioners and cattle breeders in the proportion of bulls that can be expected to pass the PNS test, by breed, age and region, based on a robust data set. Refereed/Peer-reviewed |
| Databáze: | OpenAIRE |
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