INTER- AND INTRA-BREED VARIATION IN EJACULATE CHARACTERISTICS AND IN THE MORPHOLOGY, DIMENSIONS AND SHAPE OF SPERMATOZOA OF BOARS USED FOR ARTIFICIAL INSEMINATION
Journal Title: Folia Pomeranae Universitatis Technologiae Stetinensis Agricultura Alimentaria Piscaria et Zootechnica - Year 2017, Vol 43, Issue 336
Abstract
The aim of this study was to evaluate inter-bred and intra-breed variation in ejaculates and the morphology, dimensions and shape of spermatozoa of boars used for artificial insemination. The results obtained from this study suggested that there is relatively high intraand inter-breed variation in the basic characteristics of ejaculates. The ejaculates of the Landrace and Large White boars have markedly greater volume than those of the Duroc boars or the Duroc × Pietrain crossbreds, while the ejaculates of the Landrace boars contain more sperm cells than those of boars of other breeds. The spermatozoa of the crossbred boars exhibit lower motility than the sperm of other breeds. Results revealed that factors other than breed have a much greater influence on the frequency of morphological sperm defects. The morphometric dimensions of sperm cells are characterized by low intra-breed variation and relatively high inter-breed variation. The results showed that the sperm of Landrace boars had the largest head area. The spermatozoa of the Large White boars had the shortest heads and their tails were significantly shorter than those of the sperm of other breeds.
Authors and Affiliations
Krzysztof GÓRSKI, Stanisław KONDRACKI, Anna WYSOKIŃSKA
Keywords
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