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Asian Journal of Animal and Veterinary Advances

Year: 2009 | Volume: 4 | Issue: 5 | Page No.: 228-236
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Authors

Yonggang Shao

Changxin Wu

Junying Li

Chunjiang Zhao

Keywords

Research Article

The Effects of Different Caponization Age on Growth Performance and Blood Parameters in Male Tibetan Chicken

Yonggang Shao, Changxin Wu, Junying Li and Chunjiang Zhao
In this experiment, forty triplets consisting of full-sib Tibetan Chicken cockerels were divided equally into two trial groups. In each group, the triplets were randomly assigned to caponization, sham treatment and intact groups. The birds of the two trials were caponized or sham-operated at either 6 weeks of age (early) or 18 weeks of age (late) and slaughtered at 24 weeks of age. The birds in the early caponization group showed significant increases in terms of intermuscular fat deposits, subcutaneous fat thickness, liver weight, triacylglycerol concentration (p<0.05) and abdominal fat weight (p<0.01) at 24 weeks of age compared with the intact and sham groups, while later caponization resulted in significant increase in liver weight, abdominal fat weight, total cholesterol and triacylglycerol concentrations (p<0.05). In both trials, the capons exhibited lower leg muscle weight than did the intact (p<0.05). There were no significant effects on breast muscle weight on either the early or late caponization group. We concluded that late caponization accelerates the rate of fat deposition within the abdominal cavity compared to other areas after sexual maturity. Present results also suggest that the role of androgen on the growth of breast muscle is different from that on leg muscle in Tibetan Chicken cockerels. It seemed that the positive effects of androgen were reflected only on leg muscle growth.
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Comments

dr vikas chandra vats Reply

i have also done this surgical operation , but afterdoing this operation , i had get a result,capon loosing their weight and a slight lamness

Yonggang Shao

Dear Sir, Could you send your research article to me? Thank you! Yours Yonggang Shao

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