CORRELATION OF EJACULATE PARAMETERS AND SPERM MORPHOLOGY WITH THE EJACULATE VOLUME OF PIETRAIN BOARS
Keywords:
boar, ejaculate volume, morphometric characteristics, spermatozoaAbstract
The objective was to analyze the connection between physical ejaculate parameters and sperm morphology and the volume
of Pietrain boar ejaculates. The study covered 87 ejaculates collected from 10 Polish Pietrain boars. Ejaculate samples were
collected from each of the boars once a month for sperm morphology analyses. The samples were used for preparing microscopic
slides. Fifteen randomly selected spermatozoa were morphometrically measured. Their morphologic structure indices
were additionally calculated. The frequency of morphological abnormalities in the spermatozoa was also determined. Spermatozoa
with major and minor abnormalities were specified according to Blom’s classification. Also, conventional evaluation
of ejaculates was made following methods used at Polish sow insemination centers. A relationship was identified between
ejaculate volume and morphometric parameters of spermatozoa. A rise in ejaculate volume was accompanied with increasing
head and tail length, with the longest sperms identified in the most voluminous ejaculates. It was found that a rise in ejaculate
volume was accompanied with a decrease in sperm concentration and an increase in the total sperm count.
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