Effects of standardized ileal digestible isoleucine and valine:lysine ratio on growth performance of 12 to 25 kg nursery pigs

An abstract of a study by Gerhart et al investigating the effects of standardized ileal digestible isoleucine and valine:lysine ratio on growth performance of 12 to 25 kg nursery hogs is presented. Twenty-one days postweaning, a total of 2001 mixed-sex pigs were allotted to 1 of 6 dietary treatments in a randomized complete block design using previous treatment and weight as blocking criterion. Results indicated that Val:Lys ratios below 0.65 will result in reduced average daily gain and grow-finish (G:F), moreover Ile:Lys ratios below 0.55 will result in poorer G:F.