Crossbreeding and Heterosis in Turkeys

Considering Crossbreeding

High calf and feeder cattle prices during the past couple of years have helped many of Missouri’s cowcalf producers achieve profitability. Even though many cattle producer’s operations are profitable, work should continue to improve the economic position of the farm or ranch. Profitability may be enhanced by increasing the volume of production (i.e. the pounds of calves you market) and/or the v...

Detection and subtyping avian metapneumovirus from turkeys in Iran

Avian metapneumovirus (aMPV) causes diseases like rhinotracheitis in turkeys, swollen head syndrome in chickens and avian rhinotracheitis in other birds. Causing respiratory problems, aMPV adversely affects production and inflicts immense economic losses and mortalities, especially in turkey flocks. In recent years, several serological and molecular studies have been conducted on this virus, es...

Breed Use and Crossbreeding in Goat Production

Breeding and Genetics: Crossbreeding

J. Anim. Sci. Vol. 88, E-Suppl. 2/J. Dairy Sci. Vol. 93, E-Suppl. 1/Poult. Sci. Vol. 89, E-Suppl. 1 430 Application of a crossbred model reveals additional genetic variation in reproduction traits of commercial females. S. Bloemhof*1,2, E. F. Knol1, A. Kause2, and I. Misztal3, 1IPG, Institute for Pig Genetics B.V., Beuningen, the Netherlands, 2Animal Breeding and Genomics Centre, Wageningen Uni...

Lecture 6 Inbreeding and Crossbreeding

Changes in the Mean and Variance Under Inbreeding Inbreeding Inbreeding (mating of related individuals) often results in a change in the mean of a trait compared with its value in a random-mating population. Its importance is that inbreeding is generally harmful and reduces fitness. In particular, inbreeding often causes a reduction of the mean value for quantitative traits associated with repr...