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Register a new userComparing the Effect of Frozen Live Food and Artificial Diets on The Common Carp (Cyprinus carpio L.) Fry
مقارنة تأثير العلف الطبيعي المجمد و الأعلاف الاصطناعية على صغار سمك الكارب العادي (Cyprinus carpio L.)
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تم إجراء البحث لدراسة مدى تأثير كل من العلف الطبيعي المجمد ، و نوعين من العلائق الاصطناعية على النمو، معامل التحويل الغذائي و البقاء على قيد الحياة لصغار سمك الكارب العادي (Cyprinus carpio) ، الذي تم تربيته في أحواض زجاجية سعة 25 ليتر من المياه العذبة. علفت الصغار (بمعدل مكررين لكل معاملة) ثلاث مرات في اليوم حتى الشبع ، لمدة 21 يوماً . أوضحت النتائج أن مظاهر النمو المختلفة تأثرت على نحوٍ واضح(P<0.05) بالأعلاف المستخدمة. حققت الصغار التي تغذت على العلف الطبيعي المجمد أدنى معدلا ت للنمو ( معدل الكسب بالوزن و النسبة المئوية للوزن المكتسب) ، و كذلك الأمر مع معامل التحويل الغذائي لهذه الصغار ، إذ سجل قيماً منخفضة مقارنة بمثيلاتها التي قدم لها الأعلاف الاصطناعية, مع العلم أن البقاء على قيد الحياة لم يتأثر(P>0.05) . كذلك لم تسجل اختلافات جوهرية (P>0.05) بين نوعي العلف الاصطناعي المستخدم.
This study aimed to investigate the effect of frozen live food (Daphnia magna) and artificial diets on growth performance, feed conversion ratio and survival of Cyprinus carpio fry reared in 25-liter glass aquaria. Duplicate groups of fry were fed on the tested diets three times a day to satiation for 21 days. The results revealed that the growth rates (weight gain, % weight gain) were significantly (P<0.05) affected by the used diets. Fry fed on the frozen live food showed the worst growth rates, even their feed conversion ratio expressed the lowest value compared with the results obtained from fry fed on the artificial diets, although survival was not significantly (P>0.05) affected with the different diets. No significant differences (P>0.05) were noticed in the results obtained from fry fed on the different artificial diets.
References used
Appelbaum, S. The feeding behavior of carp(Cyprinus carpio L.) larvae and the possibility of adaptating them to artificial food. Arch. Fish. Wiss, 1976, 27:133-141
Bryant, P.L. and Matty,A.J. Adaptation of carp (Cyprinus carpio) larvae to artificial diets. 1. Optimum feeding rate and adaptation age for a commercial diet. Aquaculture, 1981, 23:275-286
Cahu,C.; Zambonino-Infante,J.L.; Bergot,P. and Kaushik,S. Preliminary results on sea bass larvae rearing with compound diet from first feeding, comparison with carp Cyprinus carpio larvae. Aquaculture, 1998, 196:1-7
Charlon,N. and Bergot,P. Rearing system for feeding fish larvae on dry diets. Trial with carp (Cyprinus carpio) larvae. Aquaculture, 1984, 131:303-314
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