Linear growth model analysis of factors affecting boar semen characteristics in Southern China

Journal of Animal Science
C WangJ Peng

Abstract

This study investigated the factors affecting the semen traits of boars in Southern China. A total of 172,408 ejaculates of boars from 9 AI centers were collected from January 2013 to May 2016. A linear growth model was used to analyze the effects of leve1 1 (boar breed, age, season, and boar age at herd entry) and level 2 (housing type) factors on semen quality. The intraclass correlation coefficients of semen volume, total sperm number, functional sperm number, sperm concentration, motility, and abnormal sperm were 0.62, 0.62, 0.61, 0.60, 0.54, and 0.70, respectively. Boars reared in ordinary houses had lower total and functional sperm numbers than those reared in air filtration houses ( < 0.05). The functional sperm number of Duroc boars was lower than that of Landrace and Yorkshire boars ( < 0.05). The total and functional sperm numbers were lowest from May to September and peaked at the age of 34.1 and 37.7 mo, respectively. Furthermore, boars aged 8 and 9 mo at herd entry had greater functional sperm numbers than those aged 5, 6, 7, and 12 mo at herd entry ( < 0.05), whereas no significant difference was observed between boars aged 8 mo and boars aged 9 mo at herd entry ( > 0.05). In conclusion, the linear growth model is...Continue Reading

References

Feb 1, 1990·Genetical Research·P Le RoyP Sellier
Jul 1, 1987·Journal of Animal Science·D S Buchanan
Nov 18, 2000·Animal Reproduction Science·A CiereszkoJ Glogowski
Oct 11, 2002·Statistics in Medicine·Harvey GoldsteinJon Rasbash
Mar 24, 2004·Animal Reproduction Science·J SmitalA Mohsen
Jan 1, 2005·Theriogenology·Gary C Althouse, Kristina G Lu
Jan 1, 2005·Theriogenology·Annop KunavongkritStig Einarsson
Jan 1, 2005·Theriogenology·J A B Robinson, M M Buhr
Feb 22, 2005·Animal Reproduction Science·J SmitalL L De Sousa
Aug 2, 2005·Theriogenology·M Montserrat RiveraJoan E Rodríguez-Gil
May 3, 2007·Molecular Reproduction and Development·M Pérez-CrespoA Gutiérrez-Adán
Mar 28, 2008·Animal Reproduction Science·J Smital
Jul 25, 2008·Reproduction in Domestic Animals = Zuchthygiene·G C Althouse
Jul 29, 2008·Theriogenology·R KnoxW Singleton
Mar 28, 2009·Reproduction in Domestic Animals = Zuchthygiene·J Wolf
Jul 29, 2010·Animal Science Journal = Nihon Chikusan Gakkaihō·Yu Hung HuangTien Shuh Yang
Jan 24, 2012·Fertility and Sterility·Gulfam AhmadLouis Bujan
Dec 3, 2014·Theriogenology·M SchulzeM Grobbel
Mar 29, 2015·Reproductive Medicine and Biology·Yansen LiChunMei Li

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Citations

Mar 22, 2019·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·Xiujin LiYaosheng Chen
Nov 24, 2019·Animals : an Open Access Journal From MDPI·Yinghui WuJian Peng
Oct 18, 2020·Reproduction in Domestic Animals = Zuchthygiene·Qing LiuShenming Zeng
Sep 18, 2020·Reproduction in Domestic Animals = Zuchthygiene·Chao WangJian Peng

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