Lupin-seed meal ( Lupinus angustifolius cv. Uniwhite) as a protein supplement to barley-based diets for growing pigs

Abstract

The apparent digestibility coefficients of the energy and nitrogen of diets containing lupin-seed meal (LSM) were similar to those of diets containing fish meal, despite the comparatively high fibre content of the former. In pigs of 25–85 kg, barley-based diets containing LSM as the sole protein concentrate supported similar rates of gain and efficiency of gain as those containing mixtures of LSM and either fish meal or meat and bone meal, and at least as fast and efficient gains as those containing fish meal or meat and bone meal alone as the source of supplementary protein. However, they depressed dressing percentage. Pigs growing from 12 to 25 kg on barley diets in which up to 45% of the supplementary lysine was supplied in the form of LSM grew as well as those given diets containing various mixtures of dried blood, fish meal and skim-milk powder.