An F2 chicken population of 442 individuals from 30 families, obtained by crossing a broiler line with a layer line, was used for detecting and mapping Quantitative Trait Loci (QTL) affecting abdominal fat weight, skin fat weight and fat distribution. Within-family regression analyses using 102 microsatellite markers in 27 linkage groups were carried out with genome-wide significance thresholds...

Survival or longevity is an economically relevant trait in cattle. However, it is not currently included in cattle selection criteria because of the delayed recording of phenotypic data and the high computational demand of survival techniques under proportional hazard models. The identification of longevity-correlated traits that can be early registered in lifetime would therefore be very usefu...

Three native sheep breeds like Jamuna basin, Barind tract and Coastal belt that used to rear in semi-intensive systems three agro-ecological zones of Bangladesh. The quality meat is a multifactorial trait dependent on the perspective goals link production chain. In this review an attempt has been made present detail carcass traits attributes relation other breeds. Some factors influence lamb na...

OBJECTIVE A whole genome association study was conducted to identify single nucleotide polymorphisms (SNPs) with additive and dominant effects for growth and carcass traits in Korean native cattle, Hanwoo. METHODS The data set comprised 61 sires and their 486 Hanwoo steers that were born between spring of 2005 and fall of 2007. The steers were genotyped with the 35,968 SNPs that were embedded...

Blood sample and carcass trait data were collected from 841 and 3,219 fattening animals of an F(1) cross between Japanese Black sires and Holstein dams, respectively. Data on serum vitamin A and total cholesterol concentrations containing 582 to 739 records at 4 stages of beef-fattening production were used to estimate variance components and heritabilities for the 2 traits, based on fattening ...

Because of the Ca dependency of the calpains, oral supplementation of vitamin D3 (VITD) can increase the Ca content of muscle to activate the calpains and improve tenderness. Feedlot steers (n = 142) were arranged in a 4 x 3 factorial arrangement consisting of four levels of VITD (0, 0.5, 1, and 5 million IU/[steer x d]) for eight consecutive days antemortem using three biological types (Bos in...

the purpose of this study was to identify genomic regions of quantitative trait loci (qtl), affectingcarcass traits on chromosome 1 in an f2 population of japanese quail. for this purpose, a three-generationresource population was developed by using two distinct japanese quail strains, wild (meat type) andwhite (layer type). eight pairs of white and wild birds were crossed reciprocally and 34 f...