Article
Phenotypic relationships between hair whorl characteristics and spermatozoal attributes in Holstein bulls.
Animal reproduction science - 1 Jan 2005
Evans R D, Grandin T, DeJarnette J M, Deesing M, Garrick D J
Abstract excerpt
The objective of this study was to characterize facial whorl characteristics in Holstein stud bulls (n = 485) and to investigate their association with measures of semen quantity and quality. Bulls had 1 (n = 454), 2 (n = 21) or no facial hair whorls (n = 5). Some 39% of bulls had whorls in the middle of their forehead, whereas 43% had whorls very low down on their forehead. Spiral whorls were present on 77% of...
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