this study was designed to examine the effects of intracerebroventricular (icv) injection of ketanserin(5-ht2a receptor antagonist) and sb242084 (5-ht2c receptor antagonist) on harmaline induced feeding anddrinking response in 24-h food-deprived (fd24) broiler cockerels. at first, guide cannula was surgicallyimplanted in the right lateral ventricle of chickens. in experiment 1, birds were injec...

Circulating levels of LH and androstenedione were measured in 4 groups of 30 cockerels from 3 to 26 weeks of age. Each group was submitted to a different programme of artificial lighting, either a long (16 h) photoperiod, a short (8 h) photoperiod, an increasing (8 h to 16 h) photoperiod or a night-interruption regimen. Measurements were also made of the numbers of spermatozoa ejaculated on a d...

This study was designed to examine the effects of intracerebroventricular (ICV) injection of ketanserin(5-HT2a receptor antagonist) and SB242084 (5-HT2c receptor antagonist) on harmaline induced feeding anddrinking response in 24-h food-deprived (FD24) broiler cockerels. At first, guide cannula was surgicallyimplanted in the right lateral ventricle of chickens. In experiment 1, birds were injec...

Chronic administration of estrogens parenterally inhibits coronary atherogenesis in cockerels fed a cholesterol-supplemented diet, although no such prophylactic effect was observed against aorta atherogenesis. This protection of the coronary vessels is associated with depression of the plasma total cholesterol-lipid phosphorus ratio toward normal levels consequent upon estrogen-induced hyperpho...