Serum prolactin and luteinizing hormone levels during an induced pause in domestic fowl.

J. R. Millam, M. E. el Halawani

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Serum prolactin (PRL) and luteinizing hormone (LH) levels were measured in White Leghorn hens induced to pause by fasting and exposure to 8L:16D photoschedule. Both PRL and LH levels declined during the fast and increased upon refeeding. Prolactin levels changed primarily in response to the fasting/refeeding component of the pause-inducing procedure, as exposure of non-fasted hens to an 8L:16D photoschedule exerted little effect on serum PRL levels. Injections of ovine prolactin during the pause-inducing procedure significantly reduced the subsequent rate of loss of primary wing feathers, suggesting that in certain physiological states, PRL may function to suppress molting.

Original languageEnglish (US)
Pages (from-to)1004-1010
Number of pages7
JournalPoultry science
Volume65
Issue number5
DOIs
StatePublished - May 1986

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