Document Detail

Response time of broiler chickens to cimaterol: meat tenderness, muscle composition fiber size, and carcass characteristics.
MedLine Citation:
PMID:  1379579     Owner:  NLM     Status:  MEDLINE    
The response time to cimaterol (CIM), a beta-adrenergic agonist, by broiler chickens for carcass characteristics, muscle composition, muscle fiber size, catheptic enzyme activity, and tenderness was determined. Two trials were conducted in which chickens were fed a control diet (CON) containing 0 ppm of CIM or a diet containing 1 ppm of CIM. Trial 1 consisted of 55, 31-d-old broiler chickens individually fed for up to 48 h. At 0, 6, 12, 18, 24, and 48 h, five CON and five CIM-fed chickens were killed. Trial 2 consisted of 160, 33-d-old broiler chickens group-fed for up to 14 d. At 2, 4, 6, 8, 10, 12, and 14 d, 10 CON and 10 CIM-fed chickens were killed. The breast muscle (BM) and leg muscle (LM) weight, cathepsin B and L activities, DNA, RNA, and protein concentration, and BM shear force value (SFV) were measured in both trials. Thigh muscle (TM) SFV were measured in Trial 2 only. Fiber size of BM was measured (five birds per treatment) at d 2, 6, 10, and 14. In Trial 1, BM weight and SFV were lower in CIM-fed birds at 6 h (P less than .05). In Trial 2 BM SFV were higher at d 8 (P = .06) and d 10 (P less than .05) in CIM-fed chickens. The SFV of CIM-fed chickens were higher at d 4, 8, 10, 12, and 14 (P less than .05).(ABSTRACT TRUNCATED AT 250 WORDS)
B L Gwartney; S J Jones; C R Calkins
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of animal science     Volume:  70     ISSN:  0021-8812     ISO Abbreviation:  J. Anim. Sci.     Publication Date:  1992 Jul 
Date Detail:
Created Date:  1992-09-10     Completed Date:  1992-09-10     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  8003002     Medline TA:  J Anim Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  2144-50     Citation Subset:  IM    
Department of Animal Science, University of Nebraska, Lincoln 68583-0908.
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MeSH Terms
Adrenergic beta-Agonists / pharmacology*
Chickens / anatomy & histology,  growth & development*
DNA / analysis
Ethanolamines / pharmacology*
Meat / standards*
Muscle Development
Muscle Proteins / analysis
Muscles / chemistry,  drug effects*
RNA / analysis
Random Allocation
Reg. No./Substance:
0/Adrenergic beta-Agonists; 0/Ethanolamines; 0/Muscle Proteins; 54239-37-1/cimaterol; 63231-63-0/RNA; 9007-49-2/DNA

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