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Aspergillus niger Treated Wheat Offal, Brewer Dried Grains and Palm Kernel Cake for Growing Pig Diet: Nutrient Utilization

Adegbaju Sunday Wale, Samuel T. Ogundeji, Emmanuel O. Akinfala

Abstract


Microbial treatment of agro-industrial by-products (AIBP) to improve the nutrient utilization challenges in monogastric animals is of great concern. This study was conducted to investigate the possibility of further improvement in the nutritional values of Wheat offal (WO), Brewer dried grains (BDG), and Palm kernel cake (PKC) using Aspergillus niger. A. niger was inoculated into sterilized 300 g of each AIBP for 5 days, mixed with moistened 20 kg of each untreated AIBP, and allowed to ferment for 7 days, then oven dried. The apparent total nutrient digestibility in microbial-treated WO, BDG, and PKC, was determined using growing pigs (Large White X Hampshire) with an average weight of 21.02 ± 0.63 kg in a 2 × 3 factorial arrangement. Proximate and Apparent Nutrients Digestibility results of the treated AIBPs showed a significant improvement (P<0.05) in the nutrient content and digestibility of the products. The investigation has shown that Aspergillus niger treatment has beneficial effects as it can affect the bioconversion of WO, BDG, and PKC into better-quality feed ingredients.


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