Effects of Additives Mannan and β-Glucan as a Prebiotics on Broilers Diets Contaminated with Aflatoxin

Document Type : Original Article

Authors

1 Regional Centre for Food Feed, Agriculture Research Centre, Ministry of Agriculture, Dokki, Egypt;

2 Faculty of Agriculture (El-Shatby) University of Alexandria. Egypt.

Abstract

This study was carried out to determine the effects of different levels of mannan and β-glucan as a prebiotics on some liver and kidney function, blood parameters, immune globulins concentration and body weight on broilers fed diets contaminated with 1mg aflatoxin / kg diet. Eighty broilers were randomly distributed into eight similar groups each group fed commercial broilerdiet as the follows {negative control group fed an regular broilers ration free from prebiotics and aflatoxin, posative control group fed diet contaminated with aflatoxin (1mg/kg) and free from prebiotics, groups from 3 to 8 fed diet contaminated with aflatoxin (1mg/kg) and contain different concentration of mannan and β-glucan in premix (premix added as a 1.5 gm/kg diet)}. Results showed that positive control significantly increased (P < 0.05)serum glutamic-oxaloacetic transaminase (SGOT) and serum glutamic-pyruvic transaminase (SGPT), compared with negative control and the best effect of adding mannan and β-glucan recorded with group 5, 6 where the results were close of negative control. The same trend recorded with results obtained from serum urea andcreatinine. Results of hematological analysis showed that positive control caused a significant decrease (P < 0.05)in values of packed cell volume (PCV), Red blood cells counts (RBC), Hemoglobin (Hb), and noticed a significant increase (P < 0.05) occurrence in values of total white blood cell (WBC). Generally the addition of mannan and β-glucan to diets contaminated with aflatoxin significantly improved the adverse effects of aflatoxin on hematological parameters. This study demonstrates an increase in serum IgGs concentrations with positive control and group8 without significant differences with negative control or other groups. The average body weight gain (g) increased (P < 0.05) with broilers fed negative control diet compared with positive control. The addition of both mannan and β-glucan to diets led to improvement in increase body weight gain and decreases in relative liver whight ratio.

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