EFFECT OF CADMIUM, COPPER AND LEAD CONTAMINATION ON GROWTH PERFORMANCE AND CHEMICAL COMPOSITION OF NILE TILAPIA (Oreochromis niloticus). | ||||
| Journal of Animal and Poultry Production | ||||
| Article 7, Volume 28, Issue 10, October 2003, Page 7209-7222 PDF (3.4 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jappmu.2003.245291 | ||||
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| Author | ||||
| M. F. I. Salem, | ||||
| Animal Prod. Res. Inst., Agric. Research Center, Ministry of Agriculture | ||||
| Abstract | ||||
| Bolti (Tilapia niloticus) fish were grown in polluted water with one of the heavy metals namely cadmium. copper or lead. The concentrations of the tested metals in fresh water environment were 0.1 and 0.2 mg/l Cd, 0.25 and 0.50 mg/l Cu and 0.1 and 0.2 mg/l pb. An experiment of 56 days was performed to study the effect of the tested sublethal levels of each of cadmium. copper and lead on growth performance. body composition. residual concentration and muscular and abdominal area of fish body. A set of 140 fish with 10 g average initial body weight was divided into 14 similar groups in glass aquaria containing 75 liter of water in each. The treatments and the centrol were allocated to the experimental groups in doplicates. The fish were fed on a commercial diet containing about 25% crude protein at a rate of 3% of the body weight daily during the experimental period. The results showed that cadmium. copper and lead caused a significant reduction in the average weight gain (AWG). specific growth rate (SGR). survival rate (SR). feed conversion (FC). protein efficiency ratio (PER). and carcass dry matter and protein percentages. Residual concentration increased in fish tissues. Fish muscles area decreased at the two levels studied of each pollutant as compared with the control. | ||||
| Keywords | ||||
| BOlti; fish; Cu; Cd; Pb; performance; residues; muscular area | ||||
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