%0 Journal Article
%T Effect of different lysine levels on Arian broiler performances
%A Javad Nasr
%A Farshid Kheiri
%J Italian Journal of Animal Science
%D 2011
%I PAGEPress Publications
%R 10.4081/ijas.2011.e32
%X An experiment was conducted to evaluate the performance and carcass yield of Arian male broilers fed diets (starter and grower) with different levels of lysine requirements, high lysine (120% National Research Council, NRC), medium lysine (110% NRC), standard (100% NRC) and low lysine (90% NRC) in a completely randomized experimental design. All diets were isocaloric and isonitrogenous. In broilers receiving 120% of NRC Lysine, body weight in 42 d significantly increased by 248 g compared with standard lysine diet. Feeding broilers with high lysine diets (120% NRC) significantly increased feed intake and body weight gain (22-42 and 0-42 day of age) compared with standard group (P<0.05). Body weight was significantly difference in all of weeks of trail (P<0.05). Lysine levels had no effect on feed conversion ratio. This study showed that increasing lysine level (120% NRC) in diet significantly increased abdominal fat pad, gizzard and heart weight compared with standard group (P<0.05).The results of this study suggest that additional lysine at the level of 120% of NRC in starter and grower diets optimized body weight gain in Arian broiler, whereas reductions in lysine level reduced growth and live weight.
%K Lysine
%K Body weight
%K Breast
%K Carcass
%K Arian Broiler
%U http://www.aspajournal.it/index.php/ijas/article/view/2211