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Effect of embryonic treatment with estradiol benzoate on the aggressive behavior of cockerels
N Sayag1, N Snapir, B Robinzon
1Department of Animal Science, Faculty of Agriculture, Hebrew University, Rehovot, Israel.
The International Journal of Neuroscience
|August 1, 1988
Abstract:
The purpose of this work was to study the effects of early embryonic treatment with estradiol on the aggressive behavior of cockerels, following castration and administration of testosterone or estradiol in adult life. Embryonal estradiol eliminated adult aggressive behavior. However estradiol activation after castration resulted in typical male cock fighting.

