What has more impact on results: birth or weaning weight?

Modern sows have been selected to increase prolificity in order to increase their productivity, writes animal nutrition expert Dr Francesc Molist. The continued increase in prolificity has resulted in a greater number of piglets born with a low body weight (< 1 kg). Based on this situation, Schothorst Feed Research (SFR) tried to answer the question of what has a greater effect on performance and economic result of the growing-finishing pigs; birth weight or weaning weight? SFR used da