Study of Collecting the Initial Chicken Flocks of Chee Long Yasothon Chicken
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Abstract
The purpose of this study was to collect the initial chicken flocks with desired traits by breeding 1-year-old Thai red junglefowl of Yasothon Province using male with black-red, and female with red-gray feather. They all had white earrings and black shins. A total of 9 pens and 36 chickens were used in this experiment. Four chickens, male and female at a ratio of 1:3, were placed in each pen. Eggs were incubated for F1 generation chick production. Numbers of the F1 generation chickens with different feather and shin colors were recorded. The observed phenotypes were compared with the expected phenotypes according to the Mendel's law using the chi-square method. The white-feathered chickens were selected as breeders. A total of 6 pens and 24 chickens were used in this stage of the experiment. Four chickens, male and female at a ratio of 1:3, were placed in each pen. Eggs were incubated for F2 generation chick production. The new born chickens were randomly placed in pens. A completely randomized design was used for this stage of the experiment. There were two treatments and six replications. Each treatment consisted of 6 pens, 3 chickens per pen, a total of 36 chickens were used at this stage. After 12 weeks, the body weights and body characteristic scores of the F2 generation chickens in this experiment were analyzed. It was found that the ratio of the feather colors, red:white was 8.12:1 and the ratio of the shin color, black:yellow was 2.02:1 (P>0.05). It was predicted that the 3 pairs of genes were the complete dominant genes, showing red feather with black shin and a homozygous recessive gene showed white feather with yellow shin. The body weights of the white-feathered chickens with black and with yellow shin were not statistical different (P>0.05). The body characteristic scores of the white-feathered chickens with black shin were higher than the chicken with yellow shin (P<0.01). Therefore, from this research, the white-feathered with black shin chicken with the recessive gene had economically important traits suitable for building the initial flock to develop Chee Long Yasothon chicken strains for future genetic distribution continuously.
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