Diadem/crater defect in spermatozoa of a Brahman bull: seminal traits, microscopic findings and IVF fertility. Genetic predisposition?

Esser, S., Landaeta-Hernandez, A., Hernandez-Fonseca, J.P., Verlander, J., Stunic, G., Escalona, F., Madrid-Bury, N., Quintero-Moreno, A., Bollwein, H., Kaske, M., and Chenoweth, P.J. (2010) Diadem/crater defect in spermatozoa of a Brahman bull: seminal traits, microscopic findings and IVF fertility. Genetic predisposition? Molecular Reproduction and Development, 77 (12). p. 1000.

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Abstract

[Extract] With no conclusive studies, a number of factors—mostly including thermal stress—have been suggested as the etiology for the sperm defect known as diadem/crater (Larsen nd Chenoweth, 1990; Vogler et al., 1993). A 1-year study conducted on 16 Bos taurus and Bos indicus bulls showed a consistently high percentage (up to 95.5%) of spermatozoa bearing a "diadem/crater" (D/C) defect in the semen of a 6-year-old Grey Brahman bull during the hotter months at an artificial insemination center in western Venezuela, an area representing the dry tropics. This sperm pattern reverted to essential normality during the cooler periods.

Item ID: 41001
Item Type: Article (Short Note)
ISSN: 1098-2795
Date Deposited: 07 Dec 2015 05:59
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070206 Animal Reproduction @ 70%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070201 Animal Breeding @ 30%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8303 Livestock Raising > 830301 Beef Cattle @ 100%
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