Studies on the Transferrin of Coat

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Abstract
Recently, many studies on the polymorphic biochemical systems controlled by the simple inheritance mode have been reported. The polymorphism of transferrin in human, animals and poultry has been demonstrated by many investigators. But that in goats has never been reported satisfactorily. β-Globulin polymorphism in goats was classified into three phenotypes by Ashton and McDougall, Millson and Pattison. The variable β-globulins in goats had been identified by the present authors to be iron-binding transferrins. In order to clarify the inheritance mode of serum transferrin type in goats, and to consider the differences of gene frequencies of transferrins among a few breeds of goats, the experiments were performed by using 2058 goats. The results obtained are as follows: 1) Three transferrin phenotypes in goats expressed as TfI-I, TfI-II, and TfII-II are genetically controlled by two autosomal alleles, TfI, TfII. The two alleles are co-dominant to each other. Therefore, the genotypes are expressed as terminology TfI/TfI, TfI/TfII, and TfII/TfII. 2) Gene frequencies of transferrin types in goats were as follows: TfI …… p=0.915, TfII … q=0.085 3) The great differences recognized on the frequencies of appearance of the transferrin phenotypes were also observed on the gene frequencies of transferrins among J.G., T.G., R.G., S.G., G.G., I.G., and H.G..