Document Type

Article

Publication Date

1-1-1994

Abstract

The objective was to evaluate bull differences in chromosomal and spermatozoal areas related to the occurrence of the bovine leukocyte adhesion deficiency syndrome. Lymphocyte chromosomes from 30 Holstein bulls and 2 Holstein heifers were measured using image analysis and computer-enhanced video-microscopy. Spermatozoal head areas from 29 of the 30 bulls were measured. Autosomal rank was based on decreasing area. Average total autosomal areas were not the same across bulls. One group of bulls had significantly smaller average chromosomal areas than the others; this group carried bovine leukocyte adhesion deficiency syndrome. Area measures of spermatozoal heads showed that bulls with bovine leukocyte adhesion deficiency syndrome had significantly larger head areas than normal bulls. Lymphocyte chromosomes from 3 cattle that were homozygous for bovine leukocyte adhesion deficiency syndrome were significantly smaller than chromosomes from syndrome heterozygotes. Carrier identification was improved by the use of autosomal and sperm area measurements in addition to pedigree evaluation. © 1994, American Dairy Science Association. All rights reserved.

Publication Source (Journal or Book title)

Journal of Dairy Science

First Page

1239

Last Page

1250

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