National genetic evaluations for swine in Canada are routinely computed for pig performance (backfat thickness and age at 100 kg) and sow productivity (total number of pigs born) using BLUP animal models. Approximate BLUP evaluations are also provided on-farm every time new data are collected. Current estimates for genetic change are reductions of about 0.35 mm and 1.5 days per year. These rates are about 50% faster for backfat and more than double for age than prior to the introduction of BLUP in 1985. Additional sow productivity traits are being studied and a national breeding plan is being developed for genetic improvement of carcass and meat quality.
Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 17. Genetics and breeding of dairy and beef cattle, swine and horses, , 382–385, 1994
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