6 uppsatser
… literature review is to give an overview of the differences between pure- and crossbreeding systems. Crossbreeding is a mating system with individuals of different lines or breeds. It is one of several breeding strategies in dairy production used to increase the economic profit …
… abroad since the breeding has been influenced by international standards. Crossbreeding between SH and SRB has been used in order to increase the performance of functional traits and break the negative consequences of inbreeding at herd level. Several crossbreeding studies …
… variation due to the heavy use of only a few males. Concerns have arisen and crossbreeding has been discussed as a way to manage gene loss. Four breeds has been taken into consideration for this purpose; schipperke, finish lapphund, Norwegian buhund and Norwegian elkhound …
Farmers? main reason for crossbreeding dairy cows is that they have seen a decline in functional traits, especially in the Holstein breed. Throughout crossbreeding, the farmers can combine functional and production traits of different dairy breeds and utilize the heterosis …
… This is probably due to selection in the nucleus herds of secondary sows for crossbreeding and superior sows for purebreeding. Highest remating incidence was after weaning of the first litter. Among the 500 boars (with >50 litters in the data) which were analyzed for remating …
… This is probably due to selection in the nucleus herds of secondary sows for crossbreeding and superior sows for purebreeding. Highest remating incidence was after weaning of the first litter. Among the 500 boars (with >50 litters in the data) which were analyzed for remating …
