Document Detail

The effect of intermittent lighting on growth, feed:gain ratio, and abdominal fat content of broiler chickens of various genotypes and sex.
MedLine Citation:
PMID:  3991421     Owner:  NLM     Status:  MEDLINE    
Intermittent lighting (IL) regimens were tested for rearing broiler chickens from 2 to 7 weeks of age. In Experiments 1 and 2, the effects of 6 cycles of light (L) and darkness (D) of 1L:3D vs. 12 cycles of .25L:1.75 D were compared on the performance of 2400 broiler chickens. Eight genotypes of 5170 mixed-sex broilers were used to compare effects of 6 cycles of 1L:3D vs. 1 cycle per day of 23.5L:.5D on broiler performance (Experiment 3). The sexes responded differently to two IL regimens in Experiment 1. Males had higher body weight, feed intake, and abdominal fat content with 1L:3D; in females, there was no difference in body weight or feed intake, but abdominal fat content was lower with 1L:3D regimen. In Experiment 2, no significant effect of lighting regimen on broiler performance was observed. In Experiment 3, most genotypes had lower feed intake and abdominal fat content for 1L:3D than for 23.5L:.5D, but response of weight gain was variable; one genotype had higher feed intake and another genotype had higher fat content with 1L:3D. It was concluded that sex and genotype should be considered in planning the use of IL techniques for broiler chickens.
N A Cave; A H Bentley; H MacLean
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Poultry science     Volume:  64     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  1985 Mar 
Date Detail:
Created Date:  1985-06-12     Completed Date:  1985-06-12     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  447-53     Citation Subset:  IM    
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MeSH Terms
Adipose Tissue / metabolism
Chickens / genetics,  growth & development*
Energy Metabolism
Sex Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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