Genetic study on buff columbian plumage of the Mie Native Fowl.
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概要
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Mie Native Fowl (Mie Jidori) maintained in Mie prefecture exhibited buff Columbian plumage. In order to clarify the genotype of this plumage, Mie Native Fowl males were mated with wheaten and wild type plumage females of Gifu Native Fowl. The results obtained are as follows.From the matings of Mie Native Fowl males and wheaten plumage females (ey ey) of Gifu Native Fowl, F1 and F2 generations were obtained. Down color and plumage pattern of F1 chicks were similar to those of the Mie Native Fowl. Of 65 F2 mature birds, 44 were buff Columbian plumage and remaining 21 were wild type or wheaten plumage. The plumage patterns of these two groups were similar to those of the Mie Native Fowl and the Gifu Native Fowl respectively. The segregation ratio of the two plumage types was in accord with 3:1 (P>0.25). This indicated that the gene for the buff Columbian plumage of the Mie Native Fowl could be Co.Another mating was made to determine the allele at E-locus in the Mie Native Fowl, since it was considered that genes at the E-locus might have some influence to the expression of Columbian plumage (Co). F1 males (Co co+) produced by mating between Mie Native Fowl males and Gifu Native Fowl females were crossed with wild type plumage females (co+ co+ e+ ey) of Gifu Native Fowl. As the result, 17 buff Columbian fowls, 8 buff Columbian fowls with a few black feathers on the neck, 21 wild type plumage fowls (16 males and 5 females), and 4 wheaten plumage fowls were produced. These results suggested that the gene at E-locus in the Mie Native Fowl could be ey.
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