Document Detail

Early and temporary quantitative food restriction of broiler chickens. 1. Effects on performance characteristics, mortality and meat quality.
MedLine Citation:
PMID:  11081430     Owner:  NLM     Status:  MEDLINE    
1. An experiment was conducted with broiler chickens to determine the effects of different early food restrictions, strain (Ross 508 and Hybro G) and sex on performance, mortality carcase composition and meat characteristics. 2. Birds were restricted to 80% or 90% of ad libitum intake for 4 d (80%-4 d-group and 90%-4 d-group, respectively) or 80% for 8 d (80%-8 d-group). All restrictions started on d 4. After the periods of restriction, all birds were fed ad libitum. 3. Only the 90%-4 d-group reached a final body weight not significantly different from, but lower than, the ad libitum group. The other restrictions were too severe to allow a sufficient 'catch-up'. 4. No significant differences in food conversion and total carcase fat content between groups were observed. Abdominal fat showed a tendency to increase due to the restrictions induced. 5. There was a slight trend towards a reduced mortality and of 'sudden death syndrome' but no clear effect of food restriction on number of chickens removed with leg problems. There was no significant decrease in uniformity of the flocks due to restriction. 6. The group 80%-8 d had a significant lower yield percentage. Cut-up parts and meat quality were not changed by restriction. Ross birds had a significantly higher proportion of breast meat than Hybro chickens. Meat of female chickens seemed to be paler than that of males, possibly because of the higher proportion of carcase fat. 7. Food restriction did not always give good results. However, a mild restriction (90% for 4 d) may offer some economic advantages over an ad libitum feeding regimen, mainly by reducing mortality.
M Lippens; G Room; G De Groote; E Decuypere
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  British poultry science     Volume:  41     ISSN:  0007-1668     ISO Abbreviation:  Br. Poult. Sci.     Publication Date:  2000 Jul 
Date Detail:
Created Date:  2001-02-28     Completed Date:  2001-04-19     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  15740290R     Medline TA:  Br Poult Sci     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  343-54     Citation Subset:  IM    
Ministry of Small Enterprises, Traders and Agriculture, Agricultural Research Centre, Ghent, Belgium.
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MeSH Terms
Adipose Tissue / physiology
Chickens / growth & development,  metabolism*,  physiology
Eating / physiology
Food Deprivation / physiology*
Meat / standards*
Selection, Genetic
Sex Factors
Weight Gain

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