Rhizopus Oryzae May Reduce Toxic Effects of Raw Mango Seed Kernel Amendment in the Diet of Broilers

Abstract

Studies on the histological and haematological indices of broilers fed Rhizopus oryzae fermented mango (Mangnifera indica) seed kernel was conducted. Mango seed kernels were seeded with Rhizopus oryzae and allowed to ferment for ten days. Bird fed fermented mango seed kernels had a mean weight of 2.35kg before slaughtering and 2.2kg after slaughtering. The mean weight of the organs were 13.3g for lungs, 8.5g for heart, 4.1g for the intestine, 1.3g for spleen, 47.9g for liver, 5.4g for bursa and 11.2g for kidney. Histological observation revealed hemorrhages and necrosis in the lung and intestine of the birds and the bursa was inflammed. The mean haematological value was 25.5% for PCV, 2.10x10 6 M/µl for RBC and 21.65x10 3 M/µl for WBC. The full blood count revealed that the chicken had neutrophils value of 9%, lymphocytes 86%, monocytes 5% and eosinophils 1.0%. In conclusion, Rhizopus oryzae could be exploited to reduce the toxic effects of raw mango seed kernels and 50% of maize could be replaced with fermented mango seed kernel in the diet of broilers without adverse effect on growth, histological and hematological indices.