Effect of selected light treatments on pineal weight and lipid content in the cockerel (Gallus domesticus).

A. L. Johnson, D. C. Foss, L. B. Carew

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

The effect of early and prolonged exposure of growing cockerels to selected photoperiods and wavelengths of light on pineal gland weight and lipid composition was investigated. The six treatments included 14L:10D white (control), 24L:OD white, OL:24D dark, and 14L:10D narrow-band blue, green or red light. Pineal gland fresh and dry weights were greatest under the white light treatment and least under the dark and red treatments. Examination of histological preparations and biochemical analysis both indicated that the absence of light depleted pineal lipid. When expressed as a percent of dry tissue weight, lipid from the colored light treatments was significantly greater than from the control. We conclude that both the photoperiod and the wavelength of light are capable of influencing pineal gland lipid metabolism in the cockerel.

Original languageEnglish (US)
Pages (from-to)128-134
Number of pages7
JournalPoultry science
Volume61
Issue number1
DOIs
StatePublished - Jan 1982

All Science Journal Classification (ASJC) codes

  • Animal Science and Zoology

Fingerprint Dive into the research topics of 'Effect of selected light treatments on pineal weight and lipid content in the cockerel (Gallus domesticus).'. Together they form a unique fingerprint.

  • Cite this