The enrichment by microbial fermentation of agro industrial waste to alleviate their nutritional problems
has been proposed but the nutritional value of the subsequent feed for animal consumption has not
been fully elucidated. This study investigates whether solid state fermentation of pineapple waste using
the fungi Aspergillus niger and Trichoderma viride could improve its nutrient content. Results show
that fermentation of pineapple waste by solid state fermentation using the fungi A. niger and T. viride
significantly (P < 0.05) enriches the nutrient content of the waste, particularly increasing the crude
protein and ash content while lowering the crude fiber content. The most significant nutrient
enrichment was recorded at 72 h of fermentation using A. niger and at 96 h of fermentation using T.
viride. Indiscernible changes were noted in the mineral content of pineapple waste (PW). Dry matter
increased significantly (P < 0.05) as fermentation progressed with the highest values recorded at 96 h.
This study establishes no significant differences (P > 0.05) in the fermentation abilities of the two fungi,
A. niger and T. viride. Fermented pineapple waste may be a potential supplement in compounding
animal feed provided that it is acceptable and highly digestible.