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http://dx.doi.org/10.5536/KJPS.2012.39.3.167

Effect of Dietary Metabolizable Energy and Crude Protein Concentrations on Growth Performance and Carcass Characteristics of Korean Native Ducks  

Kim, Hong-Rae (College of Animal Bioscience and Technology, Konkuk University)
Kwon, Hyung-Joo (College of Animal Bioscience and Technology, Konkuk University)
Oh, Sung-Taek (College of Animal Bioscience and Technology, Konkuk University)
Yun, Jeong-Geun (College of Animal Bioscience and Technology, Konkuk University)
Choi, Young-In (College of Animal Bioscience and Technology, Konkuk University)
Choo, Yun-Kyung (College of Animal Bioscience and Technology, Konkuk University)
Kang, Bo-Seok (National Institute of Animal Science, RDA)
Kim, Hak-Kyu (National Institute of Animal Science, RDA)
Hong, Eui-Chul (National Institute of Animal Science, RDA)
Kang, Chang-Won (College of Animal Bioscience and Technology, Konkuk University)
An, Byoung-Ki (College of Animal Bioscience and Technology, Konkuk University)
Publication Information
Korean Journal of Poultry Science / v.39, no.3, 2012 , pp. 167-175 More about this Journal
Abstract
This study was undertaken to assess dietary CP and ME concentrations for optimum growth performance and carcass characteristics of Korean Native male ducks. In a $3{\times}3$ factorial arrangement, 1-d-old Korean Native male ducks were completely randomized design to experimental diets with 3,000, 2,900, and 2,800 kcal of ME/kg of diet; each contained 23, 22, and 21% CP, respectively, from 0 to 3 wk of age. From 4 to 8 wk of age, experimental diets had 3,100, 3,000, and 2,900 kcal of ME/kg of diet, and each contained 19, 18, and 17% CP, respectively. Each dietary treatment was replicated 4 times, and feed and water were provided ad libitum. Body weight, feed intake and uniformity were measured at 3 wk and 8 wk, and carcass characteristics were evaluated at 8 wk. As CP increased from 21 to 23 %, the body weight, BW gain and feed conversion ratios (FCR) linearly improved (P<0.01) during 0 to 3 wk of age. From 4 to 8 wk of age, the body weight, feed intake, BW gain, FCR and uniformity were not different (P>0.05). Carcass ratios of birds fed 3,000 kcal of ME/kg diets from 3 to 8 wk of age were quadratically increased significantly (P<0.01). As ME and CP increased, respectively, relative weight of liver weight per 100 g of BW was linearly decreased (P<0.01). Relative weights of left breast, thigh and drumstick weight per 100 of BW were not different (P>0.05). Also, breast meat color, pH, cooking loss and shear force were not different (P>0.05). Thus, diets with 2,800 kcal of ME/kg and 23% CP or with 2,900 kcal of ME/kg and 17% CP at 0 to 3 wk and 4 to 8 wk, respectively, were used more efficiently. However, diets with 3,000 kcal of ME/kg at 4 to 8 wk in carcass rate was quadratically increased.
Keywords
native duck; metabolizable energy; crude protein; performance; carcass traits;
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Times Cited By KSCI : 5  (Citation Analysis)
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