ANSC 1011 Chapter : Animal Breeding
Document Summary
Animal breeding: breeding stock through selection for the next generation using genetic principles-sets the limits of production. Tools: marker assisted selection or genomic estimated breeding value, transgenic animals-gmo"s, genomics-whole genome selection wgs, quantitative (statistics) widely used today. Important concepts: pleitropy-single gene influences multiple traits, epistasis-multiple genes influence single trait. Heritability: a measure of the amount of phenotypic variation that is due to additive gene effects. The proportion of differences between individuals that is genetic. Two factors-genetics and environment: humans can work on the environment; however the genetics is set, reproduction is important because we sell the offspring, 3 classes of heritability. Low (. 40)-carcass traits: muscle mass, fatness, mature size, cutability: the higher the environmental influence the lower the heritability.
