Ontogeny of the photoperiodic control of prolactin and luteinizing hormone secretion in male and female bantams (Gallus domesticus)

General and Comparative Endocrinology
K P Sreekumar, P J Sharp

Abstract

The development of the photoperiodic responses for prolactin and luteinizing hormone (LH) secretion was determined in the bantam (Gallus domesticus), which becomes somatically mature at 16-18 weeks of age. Male and female bantams were reared from hatch on short days (8 h light/day) and photostimulated by transfer to 20 h light/day at 4, 8, 12, and 16 weeks. Photostimulation at all ages stimulated a robust increase in prolactin secretion in both sexes. Luteinizing hormone secretion was also stimulated except in 4-week-old females and 16-week-old males. It is concluded that the neural pathways involved in the photoperiodic control of LH and prolactin secretion are mature in juvenile bantams well before somatic maturity.

Citations

Apr 30, 2004·British Poultry Science·P D LewisS Leeson
Jul 20, 2007·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Gregory F Ball, Ellen D Ketterson
May 12, 2009·Brain Research Bulletin·Gemma GrahamTimothy Boswell
Feb 19, 2010·Animal Science Journal = Nihon Chikusan Gakkaihō·Hiroko OnoTakashi Yoshimura
Jun 16, 2009·General and Comparative Endocrinology·Hongyan LiWayne J Kuenzel
Dec 1, 2007·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Alistair Dawson
Aug 22, 2013·Journal of Evolutionary Biology·J Q OuyangM Hau
May 29, 2003·Canadian Journal of Physiology and Pharmacology·Peter J Sharp, Dominique Blache

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