Abdelhamid,, A., Abd EI-Khalek, A., Mostafa, M., Gomaah, S., Khalil, F. (2004). EFFECT OF USING BETAFIN ANDIOR BIOPOLYM AS NATURAL ADDITIVES IN PRODUCING NILE TILAPIA FISH IN POLY-CUL lURE SEMI-INTENSIVE SYSTEM IN EARTHEN PONDS. Journal of Animal and Poultry Production, 29(6), 3149-3162. doi: 10.21608/jappmu.2004.239268
A. M. Abdelhamid,; A. E. Abd EI-Khalek; M. A. A. Mostafa; S. A. A. Gomaah; F. F. M. Khalil. "EFFECT OF USING BETAFIN ANDIOR BIOPOLYM AS NATURAL ADDITIVES IN PRODUCING NILE TILAPIA FISH IN POLY-CUL lURE SEMI-INTENSIVE SYSTEM IN EARTHEN PONDS". Journal of Animal and Poultry Production, 29, 6, 2004, 3149-3162. doi: 10.21608/jappmu.2004.239268
Abdelhamid,, A., Abd EI-Khalek, A., Mostafa, M., Gomaah, S., Khalil, F. (2004). 'EFFECT OF USING BETAFIN ANDIOR BIOPOLYM AS NATURAL ADDITIVES IN PRODUCING NILE TILAPIA FISH IN POLY-CUL lURE SEMI-INTENSIVE SYSTEM IN EARTHEN PONDS', Journal of Animal and Poultry Production, 29(6), pp. 3149-3162. doi: 10.21608/jappmu.2004.239268
Abdelhamid,, A., Abd EI-Khalek, A., Mostafa, M., Gomaah, S., Khalil, F. EFFECT OF USING BETAFIN ANDIOR BIOPOLYM AS NATURAL ADDITIVES IN PRODUCING NILE TILAPIA FISH IN POLY-CUL lURE SEMI-INTENSIVE SYSTEM IN EARTHEN PONDS. Journal of Animal and Poultry Production, 2004; 29(6): 3149-3162. doi: 10.21608/jappmu.2004.239268
EFFECT OF USING BETAFIN ANDIOR BIOPOLYM AS NATURAL ADDITIVES IN PRODUCING NILE TILAPIA FISH IN POLY-CUL lURE SEMI-INTENSIVE SYSTEM IN EARTHEN PONDS
1Animal Production Department, Faculty of Agriculture, Mansoura University, Mansoura, Egypt.
2Cent. Lab. for Fish Researchs, Abbasa, Abo-Hammad, Ministry of Agriculture, Egypt.
Abstract
In a study on cultivation of Nile tilapia in earthen ponds (each of 1 faddan area) under poly-culture semi-intensive system, betsfin was added 10 diet offered to 1!1 pond (1 Kgflon), 2as! pond (2 Kgfton) and 3~ pond (1 Kg besides biopolym 600 ml/ton). Biopolym was added to diet of 4!l! pond (600 milton) but sprayed on 5!l! pond's water (1500 ml then 600 ml each 2 weeks). The 61ll pond was a control. without additives. The experimental duration was 6 months. The ~ pond gave the best results, i.e. the highest average body weight. total and daily body gains, growth rates (relative and specific), total productivity (10.675 tonlfaddan), muscular protein %, radius of the muscular bundles, total surface area occupied by the muscular bundles/mm2 (Ihe least thickness of connective tissues between muscular bundles and thickness of skin and subcutaneous layer), and highest net return (21.970 thousand LElfaddan).
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