Growth performance, feed utilization and blood components of Nile Tilapia ( Oreochromis Niloticus) as affected by dietary energy levels and zinc supplementation
Ayyat, Ahmed M. N.
Growth performance, feed utilization and blood components of Nile Tilapia ( Oreochromis Niloticus) as affected by dietary energy levels and zinc supplementation [electronic resource]. تأثير كل من مستوى الطاقة فى العليقة وإضافة الزنك على مظاهر النمو والاستفادة من الغذاء وتأثيره على مكونات الدم فى أسماك البلطي النيلي. - p.1035-1046.
Includes references.
The study was conducted at the Department of Animal Production, Agriculture Faculty, Zagazig University and the practical work was carried out at Central Laboratory for Aquaculture Research, Abbassa, Sharkia, Egypt. The experiment was carried from August to November, 2012. Fish were divided into twelve groups, each group was stocked into 3 aquaria and each one contains 10 fish. The fish of the first four groups were fed the diet containing 4113 Kcal/kg diet (normal energy level), the second four groups were fed the diet containing 4337 Kcallkg diet (medium energy level) and the other four groups were fed on the diet containing 4559 Kcal/kg diet (high energy level). Within each dietary energy level, fish groups were fed diets supplemented with vitamin zinc to supply 0, 25, 50 and 75 mg/kg diet. The non significant differences between the experimental groups for initial live body weight indicated that the groups at the beginning of the experiment were homogenous. Live body weight, daily gain, relative growth rate and feed conversion of Nile tilapia fish was affected insignificantly with dietary energy level. Daily weight gain of fish increased in fish fed high and medium energy levels by 5.69 and 0.19%, respectively. The energy levels on fish diets did not affected the mortality rate. Serum total protein, albumin, globulin, urea-N, creatinine, AL T and alkaline phosphatase insignificantly affected with dietary energy level, while AST and total lipids affected significantly (P
Summary in Arabic.
Nile tilapia--Physiology
Blood--Analysis.
Nile tilapia--Feeding and feeds.
Nile tilapia--Growth.
Zinc--Physiological effect.
Growth performance, feed utilization and blood components of Nile Tilapia ( Oreochromis Niloticus) as affected by dietary energy levels and zinc supplementation [electronic resource]. تأثير كل من مستوى الطاقة فى العليقة وإضافة الزنك على مظاهر النمو والاستفادة من الغذاء وتأثيره على مكونات الدم فى أسماك البلطي النيلي. - p.1035-1046.
Includes references.
The study was conducted at the Department of Animal Production, Agriculture Faculty, Zagazig University and the practical work was carried out at Central Laboratory for Aquaculture Research, Abbassa, Sharkia, Egypt. The experiment was carried from August to November, 2012. Fish were divided into twelve groups, each group was stocked into 3 aquaria and each one contains 10 fish. The fish of the first four groups were fed the diet containing 4113 Kcal/kg diet (normal energy level), the second four groups were fed the diet containing 4337 Kcallkg diet (medium energy level) and the other four groups were fed on the diet containing 4559 Kcal/kg diet (high energy level). Within each dietary energy level, fish groups were fed diets supplemented with vitamin zinc to supply 0, 25, 50 and 75 mg/kg diet. The non significant differences between the experimental groups for initial live body weight indicated that the groups at the beginning of the experiment were homogenous. Live body weight, daily gain, relative growth rate and feed conversion of Nile tilapia fish was affected insignificantly with dietary energy level. Daily weight gain of fish increased in fish fed high and medium energy levels by 5.69 and 0.19%, respectively. The energy levels on fish diets did not affected the mortality rate. Serum total protein, albumin, globulin, urea-N, creatinine, AL T and alkaline phosphatase insignificantly affected with dietary energy level, while AST and total lipids affected significantly (P
Summary in Arabic.
Nile tilapia--Physiology
Blood--Analysis.
Nile tilapia--Feeding and feeds.
Nile tilapia--Growth.
Zinc--Physiological effect.