Increasing lysine and methionine density improves broiler breeder performance

Abstract

A study was conducted to determine the effects of 4 different lysine and methionine densities diets, Very high (VH), high (H), medium (M) and low (L) on performance of broiler breeders 50 to 64 weeks of age. 168 female and 24 male breeders in four treatments with six replicates (7 females: 1 male) were used in the completely randomized design. Four experimental diets were formulated iso-nitrogenous and iso-energetic based on AMEn requirements. In broiler breeders receiving very high diet significantly improved egg weight, egg production, egg mass and feed conversion ratio compared with other treatments. Fertility decreased in broiler breeders fed VH density diet (P<0.05). Body weight unaffected by lysine and methionine density levels. This study of Arian boiler breeders showed that higher egg weight, egg production and egg mass can be achieved by feeding very high diet. The results of this study suggested that increasing lysine and methionine densities maximized performance of broiler breeders from 50 to 64 weeks.