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 | ||
| Article 12, Volume 29, Issue 6, June 2004, Pages 3149-3162 PDF (1.65 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jappmu.2004.239268 | ||
| Authors | ||
| A. M. Abdelhamid,1; A. E. Abd EI-Khalek1; M. A. A. Mostafa2; S. A. A. Gomaah2; F. F. M. Khalil1 | ||
| 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). | ||
| Keywords | ||
| Nile lilapia; Betafin; Biopolym; Earthen ponds; Semi intensive system; Performance; Histology; Economics | ||
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