Sexual differentiation of copulatory behaviour in the male chick requires gonadal steroids.

N. Sayag, N. Snapir, E. Arnon, M. E. el Halawani, V. E. Grimm, B. Robinzon

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

1. Embryonic injections of 0.3 mg/egg of tamoxifen (TAM), 0.2 mg/egg CI-628 (both antioestrogens), 0.5 mg/egg (ATD (aromatisation inhibitor), or antibodies to oestradiol (E), all suppressed male copulatory activity (MCA) in young male chicks. 2. Embryonic injections with either flutamide (F, androgen antagonist) or high dose of antibodies to testosterone (T) only slightly suppressed MCA. 3. TAM had no effect on embryonic plasma LH levels, 24 and 48 h after injection. 4. It seems that at the embryonic stage oestradiol is required for the normal differentiation of MCA.

Original languageEnglish (US)
Pages (from-to)607-617
Number of pages11
JournalBritish Poultry Science
Volume32
Issue number3
StatePublished - Jul 1991

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