Ameliorative Potentials of Moringa oleifera Leaf Meal on Growth Performance of Rabbits fed Fumonisin B1-Contaminated Diets
Abstract
Fumonisin B1 (FB1), an environmental mycotoxin contaminant of agricultural products, particularly maize is known to be consumed by farm animals and has been documented to cause various physiological responses, including poor growth, in animals. Various nutritional strategies have been proposed to alleviate the adverse effects of this mycotoxin on livestock. A six-week feeding experiment to assess the ameliorative potential of Moringa oleifera leaf meal (MLM) on the negative impacts of FB1 on growth performance of rabbits was conducted. A total number of 36 female rabbits, aged 8 to 9 weeks, were randomly divided into nine treatment groups (n = 4 rabbits each) containing 2.5 mg FB1, 5.0 mg FB1, 2.5 mg FB1+ 10g of MLM, 5.0 mg FB1+ 10g of MLM, 2.5 mg FB1+ 20g of MLM, 5.0 mg FB1 +20g of MLM, control diet, control diet + 10g of MLM, and control diet + 20g of MLM) per kg constituting Diets 1, 2, 3, 4, 5, 6, 7, 8, and 9, respectively. Data obtained were analysed using Analysis of Variance (ANOVA). Animals fed Diets 1, 2 and 3 had significantly (p˂ 0.05) lower feed intake than those fed diets supplemented with 20 g MLM/kg. The total weight gain of rabbits fed diets containing 2.5 and 5.0mg FB1/kg were significantly (p ˂ 0.05) lower than those fed the other diets supplemented with MLM and the control diet. However, rabbits on diet supplemented only with 20g MLM had the highest total weight gain. The feed conversion ratio of the animals was also significantly (p ˂ 0.05) influenced by the diets. Rabbits on Diet 1 had significantly (p ˂ 0.05) highest feed conversion ratio (FCR). The animals fed diets supplemented with 10 g MLM/kg had significantly (p ˂ 0.05) higher FCR than those fed diets supplemented with 20 g MLM/kg. The present study has demonstrated the mitigating potentials of MLM on the impact of FB1 on growth performance of rabbit, and can, therefore, be a suitable traditionally cheaper detoxicant for ameliorating the detrimental effects of fumonisin B1 mycotoxicosis in livestock in the tropics, especially at a concentration of 20g of MLM/kg diet.
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References
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