Microsatellite Marker Research On The Growth And Development Traits In Boer And Its Grading Hybridization

Boer goat and its hybridized offsprings with Guanzhong dairy goat were used as research populations. Their growth and development traits were measured and microsatellite markers were selected to evaluate the effects of genotypes on 6 microsatellite loci using general linear model (GLM) according to their performance traits. This study will be meaningful to the breeding and improvement of Boer Goat, the utilization of heterosis and marker assisted selection (MAS). The results were as follows:1. According to the analysis of body weight, withers height, body length, heart girth and circumference of cannon bone of the goat populations, the results were:(1) The hybridized offsprings of F1 grew and developed faster than the purebreds at the same ages, the weight male goats of F1 at 1, 2 and 3 month old were improved by 18.82%, 19.42% and 15.26% than the male purebred Boer goat respectively while the female goats of F1 at 1, 2 and 3 month old were improved by 29.93%,31.09% and 18.06% than the female purebred Boer respectively. The difference of weight between the hybridized offsprings and F1 was significant. The differences of physical measures especially heart girth within the same gender between F1 and the purebreds were significant.(2) The differences of performance traits of F2 at 1, 2 and 3 month old between male and female goats were not significant. The performance traits within the same gender at 1, 2 and 3 month old were lower than the F1.(3) The performance traits of F3 within the same gender were better than the purebred and similar to F1.2.According to the analysis of the 6 microsatellite loci, the results were:(1) These 6 selected genetic microsatellite loci have 6-10 observed allelic numbers (Na) and have 4.9652-9.8135 effective allelic numbers (Ne). The polymorphism information contents (PIC) is between 0.7717 and 0.8981. These loci belong to polymorphism loci.(2) As to the CSSM019 locus, the body weight, withers height, heart girth and circumference of cannon bone of the genotype of AF (160/180) goat was significant...