Growth performance and meat quality of long chan chicken in Ha Giang
The study was conducted to assess the growth performance and meat quality of long chan chickens at the College of Engineering and Technology of Ha Giang province, in order to contribute to the conservation and development of this breed. The results showed that up to 16 weeks of age, long chan chickens have a cumulative survival rate of 90.48%. Body weight were 1735.88 g in male, 1402.33 g in female. FCR cumulative was 4.49 kg. Performance index (PI)was 27.68; economic index (NE) was 0.54. The percentage of carcasses was 76.32% in male, 75.86% in female. The percentages of thigh and breast muscles were 21.18% and 15.21% in male, 21.43% and 15.26% in female, respectively. Abdomen fat percentages were 1.88% and 2.41% in male and female, respectively. Preservation rate of dehydration ofthigh muscle 0.63 - 0.86%, breast muscle 0.83 - 1.06%; the rate of dehydration processing in the thigh muscle was 19.43 - 21.13%, in the breast muscle 14.51 - 15.03%, the pH15 ranged from 6.03 to 6.42; pH24 fluctuates 5.61 -5.76; Light (L*), red (a*), yellow (b*) of the male and femalewere 55.26, respectively; 3.87; 22,26; 54.43; 2.36; 26.51. Light (L*), red (a*), yellow (b*) male and female thigh muscles were 47.34; 8.43; 13.92; 49.25; 7.26; 14.58. The tenderness of breast and thigh muscles were 26.79 and 26.11 respectively in male chicken; 25.11 and 2.40 in femalechicken.Long chan chickens moved from highland to lowland of Ha Giang province and raised to 16 weeks of age have good adaptability, slow growth ability, meat quality parameters such as pH value, dehydration rate, tenderness of meat were relatively good.
