ลักษณะรูปร่างภายนอกและคุณภาพซากของไก่คอล่อนที่เลี้ยงในระบบการผลิตแบบพื้นบ้าน

Abstract

        Phenotypic characteristic and carcass quality of Naked-NECK chickens reared under backyard production systems in Phatthalung and Songkhla provinces were used as studied. Twenty five chicken of each sex with a similar shape to the Thai fighting chicken at 5 - 6 months old in the range of 1.5 - 1.8 kg for the male and 1.3 - 1.6 kg for the female were sampled. Male chicken had a significantly areater comb width, comb leagth, skull length, neck length, wing length, breast girth, body length-width- depth, keel length, drumstick length, shank girth and shank length than did female chicken (P<0.01). Featherpores for male and female were 2,094 and 2,010 respectively (P>0.05). For carcass quality, female chicken had significantly higher percentage of breast part, breast muscle ( Pectoralis major ) and fillet ( Pectoralis minor ) (P<0.01) than did Female ones male chicken showed higher percentage of thigh, drumstick, thighûs muscle, drumstickûs muscle and bone (P<0.01). However, both sexes had a similar total muscle percentage (P>0.05). Live weight showed a high correlation with weight of warm carcass, chilled carcass, thighs, drumsticks, and wings (r = 0.9581, 0.9063, 0.9093, 0.9099 and 0.8341, respectively). Nevertheless, there was low correlation value in breast muscle when compared to other characteristics.