تغییرات شاخصهای رشد و ترکیب لاشه تغذیه شده با )Carassius auratus( ماهی کاراس طلایی جیره غذایی آلوده به سطوح مختلف سموم آفلاتوکسین ب 1 و زیرالنون

The purpose of this study is to investigate the effects of aflatoxin B1 and zearalenone in regards to changes in growth indices and body composition of gold fish. For this purpose, 675 juvenile fish weighing approximately 6.25±0.12 grams in the form of 9 experimental treatments with diets containing three levels of Aflatoxin B1 (AF) (0, 50 and 100 ppb) and three levels of Zearalenone (ZER) (0, 500 and 1000 ppb) and they were fed for 60 days. Then, growth indices and body composition were measured. Based on the results, the weight gain in juveniles fed diets containing AF₅₀ with ZER₁₀₀₀ and AF₁₀₀ZER₁₀₀₀ (treatments 7 and 9) decreased compared to the control group (p<0.05). Groups fed with diet containing AF50, AF₁₀₀ZER₅₀₀, and AF₁₀₀ZER₁₀₀₀ showed lower weight gain (p<0.05). Specific growth rate at levels of AF50, AF₁₀₀, ZER₁₀₀₀ and combination treatments of two toxins had a significant decrease compared to the control group (p <0.05). Although there was no significant difference between treatments in indices of feed conversion ratio, the lowest value was observed in the group without toxin (treatment 1) and the highest value was observed in treatment 9 (AF₁₀₀ZER₁₀₀₀) (p >0.05). The lowest body protein was observed in treatment 6 (AF₅₀ZER₅₀₀) (p <0.05). Also, the lowest body fat was observed in treatment 4 (ZER₅₀₀) (p <0.05). The lowest moisture was observed in treatment 7 (AF₅₀ZER₁₀₀₀) (p <0.05). It can be concluded that both Aflatoxin B1 and Zearalenone alone, reduce growth indices and changes in body composition, but the simultaneous presence of two toxins has the greatest effect on these indices. [ABSTRACT FROM AUTHOR]