A NOTE ON EFFECT OF INBREEDING ON PRODUCTION TRAITS IN PIGS

Pigs with inbreeding coefficients, ranging from 0.125 to 0.375 were an alysed for effect of inbreeding on daily carcass gain, body length and meat proportion in the carcass. The foundation animals were back cros ses of a Landrace boar of his daughters which were Yorkshire Landrace hybrids. The statistical model included effect of sex and slaughter we ight in addition to the effect of inbreeding. A statistically signific ant effect of inbreeding on daily carcass gain was found with a linear decline of 1.6 g for 0.1 increase in inbreeding coefficient. There wa s no effect of inbreeding on body length and meat proportion. Carcass weight had a highly significant effect on body length and daily carcas s gain. Effect of sex was statistically significant for meat proportio n only.