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Reference: Crossbreeding in dairy cattle: A Danish perpectiveperspective. Sorenson, M.K. et al, 2008. Journal of Dairy Science, Vol 91 (11), pp. 4116-4128
The second reason for crossbreeding is is to exploit the complementarity of breeds or lines: combination of the characteristics of two breeds or lines is favourablefavorable. An example is the cross of sows of a pig breed with a high litter size with a boar of a breed that gives a fast growth up to the slaughter weight. The cross leads to more pigs per litter that grow fast during fattening. This gives a higher profitability than keeping a purebred sow with the same litter size and a moderate growth of the piglets or keeping a sow of a breed with a moderate litter size and a fast growth of her piglets.
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