Sayed Majid Hosseini  , Sayed Mostafa Akbary  , Naser Maheri-Sis  , Afshar Mirzaei-Aghsaghali  , 
    SThe Effect of Using Excess Lysine on the Performance and Slaughter Characteristics of Broiler Chickens,
    Research Journal of Biological Sciences,
    Volume 4,Issue 2,
    2009,
    Pages 143-147,
    ISSN 1815-8846,
    rjbsci.2009.143.147,
    (https://makhillpublications.co/view-article.php?doi=rjbsci.2009.143.147)
    Abstract: The study was conducted to investigate the effect of excess lysine on performance, viscera weight and abdominal fat in broilers during starter (0-3 weeks) and growing (4-6 weeks) periods. Two hundred and forty days old broiler chicks were reared using completely randomized design with four treatments groups (T<SUB>1</SUB> = 0%, T<SUB>2</SUB> = 0.2%, T<SUB>3</SUB> = 0.4%, T<SUB>4</SUB> = 0.6% excess lysine ) having three replicates of 20 birds in each group for 6 weeks. Results showed that the treatments groups there had no significant differences on feed intake at the rearing period. Weight gain and feed conversion ratio was better (p&lt;0.05) in treatment groups than T<SUB>1</SUB> (control group). There were significant differences in percentage of abdominal fat weight and offal weight between treatments (p&lt;0.05) in total period. Overall, we can suggest that T<SUB>3</SUB> (0.4% excess lysine) had better performance and carcass yield than other treatments.
    Keywords: Broiler;lysine;feed intake;weight gain;abdominal fat