Author:
Lacombe Diane,Cyr André,Bergeron Jean-Marie
Abstract
Male red-winged blackbirds were kept in captivity and fed cracked corn containing 0.1% ornitrol for a period of 10 days in order to determine the optimal timing of this treatment during gonad growth. Treatments were administered before and during testis growth under conditions of natural photoperiod and under conditions of artificial photoperiod that stimulate testis development (18 h light: 6 h dark). In both experiments we observed a great deal of individual variation in the response to treatments. In the first trial, treatments applied both before and during testes growth inhibited their development. In the second trial, the same trend was observed, but differences were not significant. This treatment will have maximum efficiency in a natural environment and be profitable as a method of control only if the reproductive state of male redwings is determined with precision.[Journal translation]
Publisher
Canadian Science Publishing
Subject
Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics
Cited by
6 articles.
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