نوع مقاله : مقاله پژوهشی
1 دانشجوی کارشناسی ارشد تکثیر و پرورش آبزیان، دانشکده علوم دامی و شیلات، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران.
2 دانشیار گروه شیلات، دانشکده علوم دامی و شیلات، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران.
3 دانشجوی دکتری گروه شیلات، دانشکده علوم دامی و شیلات دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران.
عنوان مقاله [English]
This study was to evaluate growth performance, nutrients digestibility and body composition in common carp, Cyprinus carpio, fed different levels of tomato pulp supplemented with enzyme complex. This research was conducted in the frame of a completely randomized design with seven four treatments and three replicates each. The diets were formulated by exchanging 10, 20 and 30% of tomato pulp with soybean meal and wheat flour. The three experimental diets were made by inclusion of enzyme complex (at 0.4 g/kg) to the pulp diets. A diet with no enzyme and tomato pulp was considered as a control diet in the current study. The result showed that maximum growth in common carp was obtained with diet contained 10 % tomato pulp (P<0.05). Inclusion of 10% tomato pulp also improved substantially feed conversion ratio than the other diets (P<0.05). In addition, 30% tomato pulp inclusion did not change carp growth compared with the control diet. Dry matter digestibility in carp was not affected by addition of progressive levels of tomato pulp with enzyme. However, protein digestibility was decreased with increasing the tomato pulp levels. Maximum protein digestibility was observed in common carp feeding on control diet and this is followed by diets with 10, 20 and 30% tomato pulp (P<0.05). Fat digestibility improved with increasing tomato pulp levels in the diets. Moreover, tomato pulp with enzyme did not influence body composition in common carp (P>0.05).