Advanced SearchSearch Tips
The Effects of Caponization Age on Muscle Characteristics in Male Chicken
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
The Effects of Caponization Age on Muscle Characteristics in Male Chicken
Chen, Kuo-Lung; Chen, Tsai-Tzu; Lin, Kou-Joong; Chiou, Peter Wen-Shyg;
  PDF(new window)
This study examined the caponization effects on the muscle characteristics (quality and quantity) of caponized male chickens fed before or after sexual maturity. Healthy and uniform Single Comb White Leghorn chickens were caponized at 3-week-old. Feeding was conducted until 16-week-old in trial 1 or from 12-week-old to 26-week-old in trial 2. Ten sham operated male chickens (Sham) were also assigned to each trial as the control group. Chickens used in both trials were housed in individual cages with each chicken representing one replicate. The results showed that early caponization (3-week-old) significantly increased (p<0.05) body weight and pectoral major muscle weight and percentage at 16-week-old compared to the Sham in trial 1. Caponization significantly increased (p<0.05) the protein content of the pectoral major muscle, but decreased (p<0.05) the ash content. Late caponization (12-week-old) significantly decreased (p<0.05) the ash content, myofibrillar ATPase activity and emulsification capacity of the pectoral major muscle in mature capons (26-week-old) compared to the Sham in trial 2. Early caponization (3-week-old) only increased the weight and protein content of the pectoral major muscle with decreased ash content in 16-week-old capons. Late caponization (12-week-old) showed no affects on pectoral major muscle quantity, while it decreased the ATPase activity and enhanced the emulsification capacity in mature (26-week-old) capons. Hence, the muscle quality improvement was shown as capons were fed to sexual maturity.
Caponization;Male Chicken;Muscle Quality;Muscle Quantity;
 Cited by
Effects of Caponization and Testosterone on Bone and Blood Parameters of SCWL Male Chickens,;;;;;;

아세아태평양축산학회지, 2007. vol.20. 5, pp.706-710 crossref(new window)
Osteometric Effects of Surgical Caponisation on Some Long Bones in Cockerel Chickens, Advances in Zoology, 2014, 2014, 2314-7865, 1  crossref(new windwow)
Effect of caponization on the production performance, slaughter yield and fatty acid profile of muscles of Greenleg Partridge cocks, Journal of Food Science and Technology, 2015, 52, 11, 7227  crossref(new windwow)
4. Quality of Poultry Meat from Native Chicken Breeds – A Review, Annals of Animal Science, 2016, 16, 2  crossref(new windwow)
Long-bone properties and development are affected by caponisation and breed in Polish fowls, British Poultry Science, 2017, 58, 3, 312  crossref(new windwow)
AOAC. 1984. Official methods of analysis (13th ed). Association of Official Analytical Chemist. Washington, DC.

Chang, C. H. 2001. Investigation of carcass and meat characteristics from different sizes commercial capons in Taiwan. Animal Science Dept. Master Thesis. National Chung-Hsing Univ. Taiwan.

Chen, K. L., C. P. Wu and R. G. R. Chou. 2000a. Effect of caponization age on growth performance and postmortem change in muscles of Taiwan country chicken. J. Agric. Assoc. China. 1(1):54-63.

Chen, K. L., C. P. Wu and Y. M. Hong. 2000b. Meat quality and carcass traits of capon in comparison with intact male and female Taiwan country chicken. J. Chin. Soc. Anim. Sci. 29(1):77-88.

Chen, K. L., W. T. Chi and P. W. S. Chiou. 2005. Caponization and testosterone implantation effects on blood lipid and lipoprotein profile in male chickens. Poult. Sci. 84:547-552.

Chen, K. L., M. H. Chang, S. M. Tsay, H. Y. Hurng and P. W. S. Chiou. 2006a. Effects of caponization on bone characteristics and histological structure in chickens. Asian-Aust. J. Anim. Sci. 19(2):245-251.

Chen, K. L., T. Y. Hsieh and P. W. S. Chiou. 2006b. Caponization effects on growth performance and lipid metabolism in Taiwan country chicken cockerels. Asian-Aust. J. Anim. Sci. 19(3):438-443.

Chen, K. L., S. M. Tsay, D. Y. Lo, F. J. Kuo, J. H. Wang and P. W. S. Choiu. 2007. Effects of caponization and testosterone on bone and blood parameters of SCLW male chickens. Asian-Aust. J. Anim. Sci. (accepted).

Fennell, M. J. and C. G. Scanes. 1992a. Inhibition of growth in chickens by testosterone, $5-{\alpha}dihydrotestosterone,$ and 19-nortestosterone. Poult. Sci. 71:357-366.

Fennell, M. J. and C. G. Scanes. 1992b. Effects of androgen (testosterone, $5-{\alpha}dihydrotestosterone,$ and 19-nortestosterone) administration on growth in turkeys. Poult. Sci. 71:539-547.

Ford, J. J. and J. Klindt. 1989. Sexual differentiations and the growth process. In: Animal growth regulation. pp. 317-336. Plenum Press, New York.

Hsieh, T. Y. 2003. Effect of caponization in Taiwan country chicken cockerels on growth performance and lipid metabolism. Animal Science Dept. Master Thesis. National Chung-Hsing Univ. Taiwan.

Knipe, C. L., D. G. Olson and R. E. Rust. 1985. Effects of selected inorganic phosphates, phosphate levels and reduced sodium chloride levels on protein solubility, stability and pH of meat emulsions. J. Food Sci. 50:1010-1013. crossref(new window)

Kuo, T. W. 2002. Effect of different caponized ways and different caponized weeks on meat characteristics of Taiwan country Chicken. Animal Science Dept. Master Thesis. National Chung-Hsing Univ. Taiwan.

Lin, C. Y. 2003. Effects of Caponization on Growth, Blood, Carcass and Bone Characteristics in TLRI Native Chicken Cockerels Taishi Meat No. 13. Animal Science Dept. Master Thesis. National Chung-Hsing Univ. Taiwan.

Lin, K. J., D. Neupaney, M. Ishioroshi and K. Samejima. 1999. Myofibrillar ATPase activity of Chinese-style semi-dry sausage as affected by curing time and sugar concentration. Food Sci. Agric. Chem. 1:34-39.

Lin, K. J., T. F. Tseng and C. P. Wu. 2001. Effects of cryoprotectants on pH value, myofibrillar ATPase activity and strength of mechanically deboned chicken meat and it's surimi. Taiwaness J. Agric. Chem. Food Sci. 39(1):31-39.

Madruga, M. S., S. G. B. Arruda and J. A. Nascimento. 1999. Caponization and slaughter age effects on nutritive value of the 'mestico' goat meat. Meat Sci. 52:119-125. crossref(new window)

Mast, M. G., H. C. Jordan and J. H. Macneil. 1981. The effect of partial and complete on growth rate, yield, and selected physical and sensory attributes of cockerels. Poult. Sci. 60:1833-1837.

Nold, R. A., J. R. Romans, W. J. Costello and G. W. Libal. 1999. Characterization of muscles from boars, barrows, and gilts slaughtered at 100 or110 kilograms: differences in fat, moisture, color, water-holding capacity, and collagen. J. Anim. Sci. 77:1746-1754.

Ockerman, H. W. 1985. Quality control of post mortem muscle tissue. Animal Science Dept. The Ohio State Univ. Columpous, OH.

Samejima, K., N. H. Lee, M. Ishioroshi and A. Asghar. 1992. Protein extractability and thermal gel formability of myofibrils isolated from skeletal and cardiac muscles at different postmortem periods. J. Sci. Food Agric. 58:385-393. crossref(new window)

SAS. 1985. SAS/STAT. Guide for personal computers (Version 6.08). SAS Inc., Cary, NC.

Skjaerlund, D. M., D. R. Mulvaney, W. G. Bergen and R. A. Merkel. 1994. Skeletal muscle growth and protein turnover in neonatal boars and barrows. J. Anim. Sci. 72:315-321.

Steel, R. G. D. and J. H. Torrie. 1997. Principles and procedures of statistics 3rd edition. McGraw- Hill, New York.

Tsai, C. H. 2004. Effects of castration and testosterone implantation on growth, energy retention, and energy consumption of tissues in male chickens. Animal Science Dept. Master Thesis. National Chung-Hsing Univ. Taiwan.

Wang, H. T. 2001. Effects of surgical caponization and administration of Estradiol to chicken embryos on daily activity, agonistic behavior, growth performance, carcass traits and sensory evaluation of males Taiwan country chickens. Animal Science Dept. Master Thesis. National Chung-Hsing Univ. Taiwan.