Diadem/Crater Defect in Spermatozoa of a Brahman Bull: Seminal Traits, Microscopic Findings and IVF Fertility. Genetic Predisposition?

S. Esser, A. Landaeta-Hernandez, J. P. Hernandez-Fonseca, J. Verlander, G. Stunic, F. Escalona, N. Madrid-Bury, A. Quintero-Moreno, H. Bollwein, M. Kaske, Peter Chenoweth

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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 and 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.
Original languageEnglish
Pages (from-to)1000-1000
Number of pages1
JournalMolecular Reproduction and Development
Volume77
Issue number12
DOIs
Publication statusPublished - Dec 2010

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