The effect of supplemental dietary lipase and copper addition on growth performance and fat digestibility in weaning pigs
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The current study conducted two experiments to determine if using lipase, copper or combination of lipase and copper supplement can improve the growth performance and nutrient digestibility of weaning pigs. The first experiment showed that the lipase supplementation cannot improve growth performance but did slightly enhanced fat, N and P digestibility in phase 1 and 3. The second experiment showed that the lipase supplementation showed a trend of improving growth performance, but it decreased fat and N digestibility in phase 1. The pigs treated with a combination of lipase and copper supplement had significantly better growth performance and N and P digestibility, but the fat digestibility was not improved with lipase or lipase and copper supplement. In the study, no consistent result showed that lipase to be beneficial to growth performance or fat digestibility. The effect of copper on improving lipase activity cannot be determined.