The relationship between scrotal circumference at weaning and at one year of age in beef bulls

Scrotal circumference data obtained from performance test station bulls were corrected to 240 and 365 days of age. Data were analyzed, retrospectively, to determine the outcome for scrotal circumference at 365 days of age, if bulls were culled at selected cut-off values for scrotal circumference at...

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Bibliographic Details
Published inCanadian veterinary journal Vol. 41; no. 7; pp. 541 - 546
Main Authors Barth, A D, Ominski, K H
Format Journal Article
LanguageEnglish
Published Canada 01.07.2000
Subjects
Animal Husbandry
Animals
Cattle - growth & development
Cattle - physiology
Fertility
Male
Reference Values
Scrotum - anatomy & histology
Weaning
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Summary:Scrotal circumference data obtained from performance test station bulls were corrected to 240 and 365 days of age. Data were analyzed, retrospectively, to determine the outcome for scrotal circumference at 365 days of age, if bulls were culled at selected cut-off values for scrotal circumference at 240 days of age. The data indicate that scrotal circumference measurements in weaned bulls may not be useful as a culling tool, since a large proportion of bulls, irrespective of breed, fell below the selected cut-off measurement for scrotal circumference at weaning, but met the minimum scrotal circumference at one year of age. Scrotal circumference measurements at 240 days of age may, however, be useful as a tool for selecting bulls with a greater than 80% probability of achieving the minimum scrotal circumference measurement at one year of age.
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ISSN:0008-5286