Genetic identificationrelationship

The domestic goat (Capra hircus) may have evolved from the bezoar (Capra aegagrus). Differences in the cytochrome b gene of mitochondrial DNA were used to cluster the bezoar and domestic goat together, while the markhor (Capra falconeri) was clustered separately.1-8-1 Further, the genetic diversity of several breeds of goats in several locations has been determined. Variations in allele frequencies in red blood cell groups and blood proteins were used to determine the genetic distance between breeds in France.[9] In Switzerland, PCR amplification of 20 bovine microsatellites on 20 40 unrelated animals per

Table 2 Mode of action of gene P according to genetic sex and genotypes

PP (polled homozygote)

Genotypes

Pp (polled heterozygote)

pp (horned)

Genetic females (Karyotype XX) All sterile Sterile females Hermaphrodites

Pseudomales with testicular hypoplasia

Genetic males (Karyotype XY) (1b) fertile males b males with obstructed epididymal ducts unilateral and bilateral blocking Coefficient of hyperprolificacy of fertile homozygous males PP vs. polled Pp and horned pp males, r= 1.080

All fertile All fertile

Advantage of prolificacy of polled Pp goats (6 7%) over horned goats

Favorable maternal effect of polled Pp mothers on weight of their kids (5 6%) higher, from 1 to 7 months

All fertile All fertile

Males partly or completely sterile

breed revealed that all Swiss goat breeds were closely related and there was significant distance between these breeds and the ibex, bezoar, and Creole breeds.[10]

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