Systematic Analysis of Breed, Methodological, and Geographical Impact on Equine Sperm Progressive Motility

Over the past five decades, there has been increasing evidence to indicate global declines in human semen quality. Parallel adverse trends measured in male animals indicate a potential environmental aetiology. This study evaluated the progressive motility (PM) of stallion ejaculate through a systema...

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Autores principales:	Jodie Perrett, Imogen Thea Harris, Christy Maddock, Mark Farnworth, Alison Z. Pyatt, Rebecca Nicole Sumner
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	equine progressive motility temporal trends semen analysis breed seasonality Veterinary medicine SF600-1100 Zoology QL1-991
Acceso en línea:	https://doaj.org/article/fc574145a0ee4f26b43fe2138ac6acd7
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id	oai:doaj.org-article:fc574145a0ee4f26b43fe2138ac6acd7
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spelling	oai:doaj.org-article:fc574145a0ee4f26b43fe2138ac6acd72021-11-25T16:14:55ZSystematic Analysis of Breed, Methodological, and Geographical Impact on Equine Sperm Progressive Motility10.3390/ani111130882076-2615https://doaj.org/article/fc574145a0ee4f26b43fe2138ac6acd72021-10-01T00:00:00Zhttps://www.mdpi.com/2076-2615/11/11/3088https://doaj.org/toc/2076-2615Over the past five decades, there has been increasing evidence to indicate global declines in human semen quality. Parallel adverse trends measured in male animals indicate a potential environmental aetiology. This study evaluated the progressive motility (PM) of stallion ejaculate through a systematic review and meta-analysis. A total of 696 estimates of equine PM from 280 studies, which collected semen samples between the years 1990 and 2018, were collated for meta-analysis. The method of motility analysis, breed, season of collection, and geographical location were extracted. Simple linear regression determined temporal trends in stallion PM. Studies using microscopy estimated PM to be significantly greater compared to computer-automated methods (<i>p</i> ≤ 0.001). For Arabian breeds, PM was consistently higher than other breeds. Over time, there was a significant decline in PM for studies from Europe (<i>n</i> = 267) but a significant increase for studies from North America (<i>n</i> = 259). Temporal trends indicate the fertilising capacity of equine ejaculate has remained consistently high in the last three decades. That being so, variations observed suggest methodological, geographical, and individual stallion differences may significantly influence actual and reported stallion fertility potential.Jodie PerrettImogen Thea HarrisChristy MaddockMark FarnworthAlison Z. PyattRebecca Nicole SumnerMDPI AGarticleequineprogressive motilitytemporal trendssemen analysisbreedseasonalityVeterinary medicineSF600-1100ZoologyQL1-991ENAnimals, Vol 11, Iss 3088, p 3088 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	equine progressive motility temporal trends semen analysis breed seasonality Veterinary medicine SF600-1100 Zoology QL1-991
spellingShingle	equine progressive motility temporal trends semen analysis breed seasonality Veterinary medicine SF600-1100 Zoology QL1-991 Jodie Perrett Imogen Thea Harris Christy Maddock Mark Farnworth Alison Z. Pyatt Rebecca Nicole Sumner Systematic Analysis of Breed, Methodological, and Geographical Impact on Equine Sperm Progressive Motility
description	Over the past five decades, there has been increasing evidence to indicate global declines in human semen quality. Parallel adverse trends measured in male animals indicate a potential environmental aetiology. This study evaluated the progressive motility (PM) of stallion ejaculate through a systematic review and meta-analysis. A total of 696 estimates of equine PM from 280 studies, which collected semen samples between the years 1990 and 2018, were collated for meta-analysis. The method of motility analysis, breed, season of collection, and geographical location were extracted. Simple linear regression determined temporal trends in stallion PM. Studies using microscopy estimated PM to be significantly greater compared to computer-automated methods (<i>p</i> ≤ 0.001). For Arabian breeds, PM was consistently higher than other breeds. Over time, there was a significant decline in PM for studies from Europe (<i>n</i> = 267) but a significant increase for studies from North America (<i>n</i> = 259). Temporal trends indicate the fertilising capacity of equine ejaculate has remained consistently high in the last three decades. That being so, variations observed suggest methodological, geographical, and individual stallion differences may significantly influence actual and reported stallion fertility potential.
format	article
author	Jodie Perrett Imogen Thea Harris Christy Maddock Mark Farnworth Alison Z. Pyatt Rebecca Nicole Sumner
author_facet	Jodie Perrett Imogen Thea Harris Christy Maddock Mark Farnworth Alison Z. Pyatt Rebecca Nicole Sumner
author_sort	Jodie Perrett
title	Systematic Analysis of Breed, Methodological, and Geographical Impact on Equine Sperm Progressive Motility
title_short	Systematic Analysis of Breed, Methodological, and Geographical Impact on Equine Sperm Progressive Motility
title_full	Systematic Analysis of Breed, Methodological, and Geographical Impact on Equine Sperm Progressive Motility
title_fullStr	Systematic Analysis of Breed, Methodological, and Geographical Impact on Equine Sperm Progressive Motility
title_full_unstemmed	Systematic Analysis of Breed, Methodological, and Geographical Impact on Equine Sperm Progressive Motility
title_sort	systematic analysis of breed, methodological, and geographical impact on equine sperm progressive motility
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/fc574145a0ee4f26b43fe2138ac6acd7
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Systematic Analysis of Breed, Methodological, and Geographical Impact on Equine Sperm Progressive Motility

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