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http://dx.doi.org/10.5536/KJPS.2009.36.1.023

Effect of Protein and Energy Levels on Performance and Carcass Rate in Cross Bred Chicks  

Na, J.C. (Poultry Science Division, National Institute of Animal Science)
Park, S.B. (Poultry Science Division, National Institute of Animal Science)
Bang, H.T. (Poultry Science Division, National Institute of Animal Science)
Kang, H.K. (Poultry Science Division, National Institute of Animal Science)
Kim, M.J. (Poultry Science Division, National Institute of Animal Science)
Choi, H.C. (Poultry Science Division, National Institute of Animal Science)
Seo, O.S. (Poultry Science Division, National Institute of Animal Science)
Ryu, K.S. (School of Animal Science & Biotechnology, Chun-buk National University)
Jang, H.K. (Department of Infection Diseases and Avian Diseases, College of Veterinary Medicine, Chonbuk National University)
Choi, J.T. (Extension Planning Division, R.D.A.)
Publication Information
Korean Journal of Poultry Science / v.36, no.1, 2009 , pp. 23-28 More about this Journal
Abstract
The experiment were protein and metabolizable energy level in performance and carcass rate in cross bred chicks. One day old, 720 male and female cross bred chick were used for the experiments, and 20 chicks were placed at each pen. The energy level of feed was maintained about 2,950, 3,000, 3,050 kcal/kg, and protein content was adjusted about 19, 20, 21% from 0 to 5 weeks and energy level was maintained about 3,100, 3,150, 3,200 kcal/kg, and protein content was adjusted about 17, 18, 19% from the 6 to 10 weeks old of the experiment. At the whole time, ME 3,100 (2,950), 3,150 (3,000) and 3,200 (3,050) kcal/kg treatment groups was not significant difference in weight gain, feed intake, but 3,150 (3,000), 3,200 (3,050) kcal/kg treated groups revealed to show improved feed conversion rate than the group treated with ME 3,100 (2,950) kcal (P<0.05). And CP 17 (19), 18 (20), 19 (21)% treatment groups did not significant difference weight gain and feed intake but CP 19 (21)% treated group wan significant difference feed conversion rate than the CP 17 (19)% treated group (P<0.05). ME level of 3,100 (2,950), 3,150 (3,000), 3,200 (3,050) kcal/kg treatment groups in carcass rate and abdominal fat rate was not signficant difference and protein of 17 (19), 18 (20), 19 (21)% treatment groups after end of experiment. Between ME and CP of dietary was significant appeared to interact at 6~10 weeks (P<0.05).
Keywords
cross bred chicks; ME; CP; performance; carcass rate;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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