ملخص المقال

The effect of photoperiod and prolactin on the regulation of seasonal reproduction,
with the domestic pigeon, was studied male pigeons were exposed to a long daily
photoperiod (18 L: 6D), maintained under the same photoperiod regime and treated with
prolactin at 10 and 20 ng / ml / of a bird / 3 days. testicular volume, prolactin and thyroxin
in plasma were estimated at the end of the experiment, the results show that, under a long
photoperiod (18L: 6D), sexual activity lasts 6 weeks, whereas that treatment with prolactin,
inhibits the growth of testes, and therefore reproduction, these results suggest that, unlike
the other species of birds, the mode of action of prolactin in the onset of the refractory
phase, through thyroxin .
Keywords: Photoperiod, Reproduction, Prolactin, Pigeons.

معلومات

Item Type:	Journal
Divisions:
ePrint ID:	429
Date Deposited:	2015-10-23
Further Information:	Google Scholar
URI:	https://www.univ-soukahras.dz/ar/publication/article/429

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