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Reduction of lead oxide toxicity by using bentonite in mono-sex nile tilapia Oreochromis niloticus diets [electronic resource].

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Farrag, F. H

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Language: English Summary language: Arabic Description: p.429-451Other title:

تقليل سمية أكسيد الرصاص باستخدام البنتونيت في علائق أسماك البلطي النيلي وحيد الجنس [Added title page title]

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Abbassa international journal for aquaculture, 2009, Conference, Special issue [electronic resource]:

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In: Abbassa Internation Journal for Aquaculture 2009Summary: The present study designed to used of bentonite as an adsorbent agent with levels (0, 1 and 2%) to alleviate the toxic effects of dietary lead oxide with levels (0, 100 and 1000 ppm) on growth performance and survival rate, carcass composition and its residues in fish muscles, and blood hematological and biochemical parameters of mono-sex Nile tilapia Oreochromis niloticus for 16 weeks. So, the factorial design analysis (3X3) was used in the present study. The obtained results showed that contaminated diets with lead oxide led to significantly (P ≤ 0.05) decreased of growth performance (final weight, weight gain, average daily gain, specific growth rate and feed intake), carcass composition (crude protein), blood hematological (hemoglobin, red blood cells, packed cell volume, MCHC, blood platelets, white blood cells and the percentage of lymphocytes), blood biochemical (total protein, albumin, globulin, albumin/globulin ratio and total cholesterol) compared with control group. While, survival rate and blood indices (MCH) insignificantly (P ≥ 0.05) decreased. But, feed conversion ratio impaired significantly compared with control group. However, dry matter, ether extract, ash, bioaccumulation of total lead in fish muscles, MCV, the percentage of monocytes, neutrophils, eosinophils and aspartate aminotransferase, alanine aminotransferase and uric acid concentrations were increased significantly (P ≤ 0.05) compared with the control group. As well as, these drastic effects were increased by increasing level of dietary lead oxide. On the other side, dietary supplemented by bentonite as an adsorbent agent reduced the toxic effects of lead oxide on mentioned measured parameters. Consequently, it could be recommended that the safety and useful addition of bentonite with levels 1 or 2% to alleviate the toxic effects of dietary contaminated by lead oxide of O. niloticus fish.

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The present study designed to used of bentonite as an adsorbent agent with levels (0, 1 and 2%) to alleviate the toxic effects of dietary lead oxide with levels (0, 100 and 1000 ppm) on growth performance and survival rate, carcass composition and its residues in fish muscles, and blood hematological and biochemical parameters of mono-sex Nile tilapia Oreochromis niloticus for 16 weeks. So, the factorial design analysis (3X3) was used in the present study. The obtained results showed that contaminated diets with lead oxide led to significantly (P ≤ 0.05) decreased of growth performance (final weight, weight gain, average daily gain, specific growth rate and feed intake), carcass composition (crude protein), blood hematological (hemoglobin, red blood cells, packed cell volume, MCHC, blood platelets, white blood cells and the percentage of lymphocytes), blood biochemical (total protein, albumin, globulin, albumin/globulin ratio and total cholesterol) compared with control group. While, survival rate and blood indices (MCH) insignificantly (P ≥ 0.05) decreased. But, feed conversion ratio impaired significantly compared with control group. However, dry matter, ether extract, ash, bioaccumulation of total lead in fish muscles, MCV, the percentage of monocytes, neutrophils, eosinophils and aspartate aminotransferase, alanine aminotransferase and uric acid concentrations were increased significantly (P ≤ 0.05) compared with the control group. As well as, these drastic effects were increased by increasing level of dietary lead oxide. On the other side, dietary supplemented by bentonite as an adsorbent agent reduced the toxic effects of lead oxide on mentioned measured parameters. Consequently, it could be recommended that the safety and useful addition of bentonite with levels 1 or 2% to alleviate the toxic effects of dietary contaminated by lead oxide of O. niloticus fish.

Summary in Arabic.

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