Effect of a commercial mycotoxin binder during mycotoxicosis in chickens

摘要

Two experiments were conducted to study the efficacy of a low inclusion commercial HSCAS in preventing the deleterious effects of aflatoxin (AF) in broiler chicks. Feed in both experiments was experimentally contaminated with synthetic aflatoxin. In Experiment 1, 75 1-d-old Arbor Acres straight-run broilers were randomly distributed into three dietary treatments with 25 replications each. T I was a corn-wheat-soybean meal (control diet), T II control + 1 ppm aflatoxin , and T III control + 1ppm aflatoxin + 2.5 kg/mt binder. At 40 d of age, birds fed 1 ppm aflatoxin contaminated diet showed significant lower body weight, poorer feed conversion, smaller bursa and severe macroscopic oral lesions than chicks fed the control diet. The addition of binder significantly prevented the impaired performance, bursa damage and the severe oral lesions observed in chicks fed aflatoxin. In second Experiment, 32 5- d-old Ross male chicks were randomly divided into four dietary treatments with 8 replications each. T I was a sorghum-soybean meal control diet, T II control + 2.5kg/mt Binder, T III control + 1.25ppm aflatoxin and T IV control + 1.25ppm aflatoxin + 2.5kg/mt binder. Feeding aflatoxin contaminated diet plus binder resulted in statistically significant heavier and more efficient broilers, with substantially reduced gross oral lesions and microscopic organs lesions (tongue, gizzard, thymus, bursa, spleen, liver, and kidney) than those fed 1.25ppm aflatoxin at 38 d of age. The addition of 2.5 kg/mt of Binder to chick diets did not show any statistical difference in performance and bone ash compared to the control diet, demonstrating its lack of nutrients absorption. These results indicated that binder at 2.5 kg/mt was effective in preventing the toxic effects of aflatoxin in broilers chicks.