Journal
AQUACULTURE
Volume 495, Issue -, Pages 27-34Publisher
ELSEVIER
DOI: 10.1016/j.aquaculture.2018.05.030
Keywords
Aflatoxin B-1; Bentonite; Vitamin C; coumarin; Bio-Mos (R); Bactocell (R); Curcumin; Nile tilapia; Blood components
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This work was performed to evaluate the effects of dietary supplementation with natural clay, coumarin, curcumin, vitamin C, probiotics and prebiotics on alleviating the harmful impacts resulting from aflatoxin B-1 (AFB(1)) toxicity in Nile tilapia. One hundred and sixty tilapia fish with average weight 7.360 +/- 0.048 were distributed into 8 groups. The first group fed the basal diet (T-1), the second group fed T-1 diet contaminated with 2 ppm AFB(1) (T-2) and the other groups fed the T-2 diet plus 20 g bentonite/kg diet (T-3), 5 g coumarin/kg diet (T-4), 5 g curcumin/kg diet (T-5), 100 mg vitamin C/kg diet (T-6), 1 g Bactocell (R)/kg diet (T-7) or 3 g Bio-Mos (R)/kg diet (T-8) for 14 weeks. Fish fed T-2 diet had reduced final body weight, weight gain and feed conversion by 19.85, 24.18 and 34.21%, respectively compared with fish fed T-1 diet. The T-6 group recorded the highest growth rate (25.20%) followed by T-5 (23.62%) and (T-3) compared with the T-2 group. Also, T-8 and T-3 groups recorded the best feed conversion ratio. Blood hemoglobin, total erythrocyte, total protein, albumin, and globulin concentrations decreased with aflatoxin contamination in T-2 group, while leukocytes enumerate increased. Supplemented aflatoxin contaminated diets with tested feed additives increased the concentration of hemoglobin, total erythrocyte, total protein, albumin, and globulin compared with the T-2 group, while the leukocytes decreased. Aflatoxin residues increased in fish fed T-2 diet compared to the other fish groups. Supplemented aflatoxin contaminated diets with tested feed additives decreased the level of aflatoxin residues.
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