Effect of embryonic treatment with estradiol benzoate on the aggressive behavior of cockerels.
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.
Sayag
N
N
Department of Animal Science, Faculty of Agriculture, Hebrew University, Rehovot, Israel.
Snapir
N
N
Robinzon
B
B
Grimm
V E
VE
D000374:Aggression / Q000187:drug effects* / Q000502:physiology; D000818:Animals; D002645:Chickens; D004958:Estradiol / Q000008:administration & dosage*; D005260:Female; D008297:Male; D009919:Orchiectomy; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects; D013739:Testosterone / Q000494:pharmacology
D013739:Testosterone; D004958:Estradiol