I. Valchev, N. Grozeva, L. Lazarov, D. Kanakov, Ts. Hristov, R. Binev, Y. Nikolov Abstract. The toxic effect of AFB in mulard ducks was evaluated through the changes in several blood parameters, namely uric acid, urea, creatinine, creatine 1 kinase, calcium, inorganic phosphate, sodiu