Some Responses of the Immature Female Fowl to Injections of Mare Gonadotropic Hormone and Oestrin

Abstract

AN INCREASE in the weight of the ovary and oviduct of immature female fowl after injection of pregnant mare’s serum was reported by Asmundson and Wolfe (1935). Breneman (1936) also found that there was a marked increase in the weight of the gonads (ovaries and testes) of newly hatched chicks; mare’s serum and follicle stimulating hormone giving maximum response while there was some increase when luteinizing hormone and pregnancy urine were injected. Domm and Van Dyke (1932) had previously reported that there was an increase in the weight of the ovary after injection of extracts of the anterior pituitary into immature female fowl while Evans and Simpson (1934) have reported that the ovary of the pigeon increases in weight after injection of pregnant mare’s serum. The present paper deals with certain experiments which show in some detail what responses are obtained with varying amounts of mare gonadotropic hormone when injected . . .