This research was conducted to evaluate the nutritional composition of elephant grass (Pennisetum purpureum) following the application of organic fertilizers derived from animal faeces combined with fruit waste. The experiment used a completely randomized design (CRD) with 5 treatments and 4 replicates. P0 = elephant grass (control), P1 = elephant grass + (rabbit faeces and fruits waste (RFAWF) 200g/polybag, P2 = elephant grass + goat feces and (fruits waste) 200g/polybag, P3 = elephant grass + cow feces and fruits waste 200g/polybag dan P4 = elephant grass + buffalo feces and fruits waste 200g/polybag. The results showed that the application of organic fertilizers derived from livestock manure combined with fruit waste had a significant effect (P < 0.05) on crude protein and crude fiber contents, but had no significant effect (P > 0.05) on moisture content, crude fat, nitrogen-free extract (NFE), and ash content. It can be concluded that organic fertilizers derived from animal faeces combined with fruit waste have the potential to improve the nutritional quality of elephant grass. The treatment using rabbit faeces combined with fruit waste was the best treatment, as it produced the highest crude protein content and superior nutritional quality compared with the other treatments.
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