Abstract:

The performance of broiler chicks fed starter diets containing 30% raw or heat treated, and 20%
heat treated velvet beans with varying levels of methionine was determined. The influence of varying
levels of heat treated velvet beans on growth and carcass characteristics of finishing broilers was also
investigated. There was no beneficial effect of adding methionine to broiler starter diets containing 30%
raw or heat Seated velvet beans. Addition of methionine to starter diets containing 20% heat treated
velvet beans significantly (P < 0.05) improved weight gain. Optiinal performance was achieved with
birds consuming the diet containing 0.2% added methionine. The content of total dietary methionine
and sulphur amino acids were 0.66 and 1.0% respectively. When heat treated and added at levels up to
20% of the diet, velvet beans proved to be a good source of protein for finishing broilers. Addition of
30% heat treated velvet beans to a finisher diet, however, decreased (P < 0.05) weight gain and increased
(P < 0.05) carcass yield.