The influence of different energy, lysine and methionine levels on layer performance

[摘要] ENGLISH ABSTRACT:The study conducted was aiming on evaluating the influence of different levels ofenergy and amino acids, mainly lysine and methionine, on production performanceof the layer bird. There were three treatments, namely the Control diet, a highenergy, lysine and methionine diet (High spec.) and a low energy, lysine andmethionine diet (Low spec.). The energy levels were 11.2 MJ/kg, 11.5 MJ/kg and10.9 MJ/kg respectively. Lysine levels were 0.67%, 0.73% and 0.63% whereasmethionine levels were 0.36%, 0.38% and 0.34% respectively. The experimentaldesign was 3 x 4 factorial, which is 3 treatments with 4 replicates each. Resultsshowed no significant difference (P>0.05) between treatments in egg production,egg mass, egg output, bodyweight and mortality. Feed intakes of the High spec. dietwere significantly lower (P<0.05) than that of the control diet and the Low spec. diet.

[发布机构] Stellenbosch University