Effects of dietary supplementation of beta 2-adrenergic agonist clenbuterol on carcase characteristics and some metabolites in ducks.
1. Ducks (622 in total) aged 25 d were given diets supplemented with clenbuterol (CL) at 0 (control), 0.5, 1, 2, 3 and 5 mg/kg for 25 d to investigate the effect of dietary CL on muscle and fat deposition and some metabolites in ducks. 2. The mass of the breast muscles was increased by 10 to 31%, while subcutaneous fat plus skin and abdominal fat pad were reduced by 8 to 23% and 20 to 37%, respectively, in the ducks supplemented 1 to 5 mg CL/kg diet. 3. Increased RNA:DNA ratios in the breast muscle, reduced uric acid and increased free fatty acid concentrations in the serum were observed in clenbuterol-fed ducks.
Zhou
G H
GH
Laboratory of Animal Physiology, Nanjing Agricultural University, P.R. China.
Han
Z K
ZK
D000273:Adipose Tissue / Q000033:anatomy & histology / Q000187:drug effects / Q000378:metabolism; D000821:Animal Feed; D000818:Animals; D002976:Clenbuterol / Q000008:administration & dosage / Q000494:pharmacology*; D004247:DNA / Q000378:metabolism; D004372:Ducks; D005230:Fatty Acids, Nonesterified / Q000097:blood; D005527:Food, Fortified; D008460:Meat; D009132:Muscles / Q000033:anatomy & histology / Q000187:drug effects* / Q000378:metabolism; D012313:RNA / Q000378:metabolism; D012016:Reference Values; D014527:Uric Acid / Q000097:blood
D005230:Fatty Acids, Nonesterified; D014527:Uric Acid; D012313:RNA; D004247:DNA; D002976:Clenbuterol