TY - JOUR T1 - Effect of Phytase Supplementation and Copper on Growth Performance and Carcass Composition of Common Carp (Cyprinus carpio L.) TT - اثر مکمل فیتاز و مس مازاد جیره بر رشد و ترکیب لاشه کپور معمولی (Cyprinus carpio L.) JF - JCPP JO - JCPP VL - 8 IS - 4 UR - http://jcpp.iut.ac.ir/article-1-308-en.html Y1 - 2005 SP - 133 EP - 143 KW - Carp KW - Phytase KW - Copper KW - growth KW - Carcass composition N2 - In order to investigate the effect of phytase and copper supplementaion on growth and carcass composition of common carp (Cyprinus carpio L.), in a completely randomized design with 3 ×2 factorial arrangement with three replicates the experimental diets including three levels of phytase 0, 500 and 1000 (FYT) kg-1 and two levels of copper 0 and 15 mg/kg were tested. Diets contained 0.72 percent total phosphorus. One hundred and forty four carps with a mean weight of 207±23 g were selected and allocated in eighteen cages (8 fish per cage). The experiment was carried out for 8 weeks and 2 weeks for acclimatization. Phytase supplementation caused no significant differences in weight gain (WG), feed conversion ratio (FCR), carcass index (CI), protein efficiency ratio (PER), liver, carcass and blood composition but increased apparent phosphorous digestibility (APD) significantly (P M3 ER -