Document Detail

Effects of caponization on growth performance, carcass composition, and meat quality of medium growth broilers.
MedLine Citation:
PMID:  20548076     Owner:  NLM     Status:  MEDLINE    
A 2-trial experiment was conducted to evaluate the effects of caponization on growth performance, carcass composition, and meat quality of medium growing broilers. Male chicks were caponized at 3 wk of age and reared until either 18 (trial 1) or 24 (trial 2) wk of age. In trial 1, the experimental groups included intact males, sham-operated chickens, and capons, whereas trial 2 comprised only intact males and capons. The concentration of testosterone was drastically reduced by caponization but remained detectable (trial 1). In both trials, BW was lower for capons during 4 to 9 or 10 wk of age when contrasted to intact males (P < 0.05). In trial 1, capons had heavier livers than intact males and sham-operated chickens. In addition, they had lighter hearts than sham-operated chicks (P < 0.05). In trial 2, capons displayed smaller drumstick and heart weights (P < 0.05). There was a tendency for increased fat pad weight in capons (P < 0.10). Caponization resulted in increased skin-fat weights of the thigh and the breast of 24 wk of age. This was also valid for carcass fat, when expressed as a percentage of the cold carcass weight, and intramuscular fat. Caponization had no effect on pH 24 h postmortem and cooking loss. Capons' breasts had lower shear values and displayed lighter, more yellow, and less red meat than that of intact males. Conclusively, caponization, without affecting growth performance, altered meat quality characteristics, resulting in special quality chicken meat.
G K Symeon; F Mantis; I Bizelis; A Kominakis; E Rogdakis
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Poultry science     Volume:  89     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-06-15     Completed Date:  2010-08-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1481-9     Citation Subset:  IM    
Department of Animal Breeding and Husbandry, Faculty of Animal Production, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece.
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MeSH Terms
Body Weight / physiology
Chickens / growth & development*,  physiology,  surgery
Least-Squares Analysis
Meat / standards*
Muscle, Skeletal / growth & development*,  physiology
Orchiectomy / veterinary*
Organ Size / physiology
Random Allocation
Testosterone / blood
Reg. No./Substance:

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

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