Advances in Animal Science, Theriogenology, Genetics and Breeding

Growth associated molecular markers and assessment of relatedness among four domestic quail genotypes in Egypt


Gomaa Said Ramadan, Esteftah Mohamed El-Komy, Reda El-wany. Moghaieb, Farid Kamal Ramzi Stino and Mona Mohamed Ghaly*

The DNA polymorphisms by microsatellites technique was applied to four genotypes of Japanese quail; Stino, White, Golden, and Japanese quail. The Stino quail had significantly the highest body weight at all ages followed by the White quail. The live body weight of both the Golden and Brown quail showed lower reciprocity order attitude across ages. The weight gain and growth rate of Stino and White quail were significantly the highest at almost periods. The mean number of alleles per locus (Na), effective allele (Ne), expected heterozygosity (He), Shannon's Information index (I) scored lower values for both Stino and the White quail (3.89, 2.97, 0.72, and 1.17), than the Golden and Brown quail. Stino quail had a higher Polymorphic information content value (0.81) than the White one (0.79) and they both scored lower values than the Golden and Brown quail (0.84 and 0.82), respectively. All genotypes were not under Hardy Wein-Berg equilibrium. Identity and genetic distance matrix had scores of 0.9267 and 0.0761 between the Stino and White quail, while 0.9275 and 0.0752 for the Golden and Brown quail, respectively. The phenotypic and molecular Neighbor joining procedures aggregated Stino and White quail in one cluster, Golden and Brown quail had joined in a different cluster. Unique microsatellite alleles were detected and recommended as marker aid selection in the Stino quail population as GUJ052, GUJ087 markers with live body weight at 21 day and GUJ054 for live body weight at 28 day. The GUJ059 is for carcass weight. Crossing between Golden and Japanese quail will have no benefit and is not recommended.


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