Genetic relations between the group effect for average daily gain, and post-mixing aggression and skin lesions in Swedish pigs

摘要: Genetic relations between the group effect for average daily gain, and post-mixing aggression and skin lesions in Swedish pigs I Page 1 Genetic relations between the group effect for average daily gain, and post-mixing aggression and skin lesions in Swedish pigs L. Canario, R. Bergsma, RB D'Eath, AB Lawrence, R. Roehe, N. Lundeheim, L. Rydhmer, E. Knol, SP Turner Session 25 - Abstract 3531 Introduction • Important genetic progress on growth achieved • This selection can be affected by group effects: Dutch (Bergsma et al., 2008) and American (Chen et al., 2008) pop. • Quantification of genetic parameters including group effects now possible (Bill Muir) • Within-pen interactions between pigs can affect welfare and integrity • Changes in behaviour can occur as a correlated response to selection on growth; agonistic characteristics are heritable traits (Turner et al. 2008) Page 2 Questions ➢ What consequences …