Effect of hyperalimentation on body composition in swine

Fifty growing pigs were used in two experiments to evaluate the effects of cannulation and hyperalimentation on performance and body composition responses. Surgical implantation of a cannula into the greater curvature of the stomach and subsequent management associated with maintenance of the cannula did not result in a reduction (P |is greater than~ .05) of voluntary feed intake. Cannulation did not negatively affect gain (P |is greater than~ .05). Over the entire trial, feed efficiency was not changed by cannulation (P |is greater than~ .05). Cannulation itself did not affect protein or fat deposition (P |is greater than~ .05) in the carcass. Hyperalimentation to approximately 120% of control intake resulted in increased daily gain (P |is less than~ .05) and similar feed efficiency (P |is greater than~ .05) compared with that of control animals. Hyperalimentation decreased protein deposition (P |is less than~ .05) and tended to increase fat deposition.