Genetic relationships among sperm quality traits of Duroc boars collected during the summer season

Tasha Gruhot, Kent Gray, Vance Brown, Yijian Huang, Stephen D Kachman, Matthew L. Spangler, Benny Mote

Research output: Contribution to journalArticle

Abstract

The goals of the study were to estimate the heritability and repeatability of boar sperm quality traits during the summer season, estimate phenotypic and genetic correlations between sperm quality traits, and assess the effect of these traits on total number born (TNB). Semen samples were collected and individually processed from Duroc boars (n = 363) from May through October 2017. Single sire litter information was available for 121 of the boars. Heritability, repeatability, genetic correlations, and phenotypic correlations were estimated for and among the following traits: total percentage of motile cells (MOT), total percentage of progressively motile cells (PROG), percentage of cells with a distal droplet (DIST), percentage of cells with a proximal droplet (PROX), percentage of cells with a bent tail (BENT), percentage of cells with a distal midpiece reflex (DMR), mean sperm head elongation (ELON), and total sperm cells per ejaculate (TOTSP). Heritability estimates ranged from 0.08 to 0.24 and repeatability estimates ranged from 0.21 to 0.62. The phenotypic and genetic correlations between sperm motility traits and morphological defects indicated a negative relationship. Sperm morphological defects had positive phenotypic and genetic correlations with each other. Total sperm per ejaculate showed positive genetic correlations with the motility traits. Positive phenotypic and genetic correlations existed between ELON and the motility traits. Total sperm motility (P < 0.001) positively affected TNB while DIST (P < 0.001), PROX (P < 0.001), BENT (P = 0.05) and DMR (P = 0.002) negatively affected TNB. Results indicate genetic selection could enhance sperm quality during the summer season in boars.

Original languageEnglish (US)
Pages (from-to)85-92
Number of pages8
JournalAnimal Reproduction Science
Volume206
DOIs
StatePublished - Jul 1 2019

Fingerprint

Duroc
boars
genetic relationships
Spermatozoa
genetic correlation
phenotypic correlation
spermatozoa
summer
droplets
repeatability
cells
heritability
Sperm Motility
sperm motility
reflexes
Reflex
Sperm Head
Genetic Selection
Semen
litters (young animals)

Keywords

  • Boars
  • Genetic correlations
  • Heritability
  • Repeatability
  • Semen quality

ASJC Scopus subject areas

  • Food Animals
  • Animal Science and Zoology
  • Endocrinology

Cite this

Genetic relationships among sperm quality traits of Duroc boars collected during the summer season. / Gruhot, Tasha; Gray, Kent; Brown, Vance; Huang, Yijian; Kachman, Stephen D; Spangler, Matthew L.; Mote, Benny.

In: Animal Reproduction Science, Vol. 206, 01.07.2019, p. 85-92.

Research output: Contribution to journalArticle

Gruhot, Tasha ; Gray, Kent ; Brown, Vance ; Huang, Yijian ; Kachman, Stephen D ; Spangler, Matthew L. ; Mote, Benny. / Genetic relationships among sperm quality traits of Duroc boars collected during the summer season. In: Animal Reproduction Science. 2019 ; Vol. 206. pp. 85-92.
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