Prevalence on lung disease and survival rate in nursery and finishing unit were recorded as binary traits and analyzed using generalized linear mixed models in data of crossbred pigs that were offspring of 12 sires. At slaughter 10,086 pigs remained in the experiment. Significant genetic variations were obtained for survival rates in the nursery and in the finishing unit. Furthermore, at slaughter remarkable significant genetic effects on lung disease were obtained with prevalences in boar groups ranging between 44% and 68% for pleuritis and between 18% and 57% for pneumonia. The results demonstrate that genetic variation for survival rate and resistance to pneumonia and pleuritis does exist in growing pigs, and suggests that breeding could be successful. Favourable genetic correlations were indicated between growth traits and the survival and disease traits.

B. Nielsen, Mogens Sandø Lund, P. Bakbo

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume , , 06.02, 2006
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