Abstract
The feasibility of converting kitchen waste into fermented feed was investigated by adjusting the dry matter (DM) content through addition of corn grits or cottonseed meal, in conjunction with inoculation of lactic acid bacteria (LAB). The LAB-inoculated (LP) group exhibited acidic aroma and excellent sensory quality, producing significantly lower ammoniacal nitrogen throughout the fermentation process (p < 0.05). On day 3, pH value of the LP group dropped below 4.2 and the lactic acid concentration reached 50 g/kg DM. On day 9, Lactobacillus was the dominant genus in the fermented feed of the LP group, reducing the risk of undesirable fermentation. On day 60, the absolute abundance of bacteria in the LP group was low, and the feed hygiene indices met the national standard. LAB inoculation to produce fermented feed achieved stability on day 3, and remained stable for at least 60 days without spoilage.
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