**4. Conclusions**

Silages of sugarcane tops, citrus, cassava and pumpkin represent an alternative in animal feeding; the particular characteristics of each should be considered for better silage production. The research shows the feasibility of producing good quality silages with these materials. This technology represents an alternative to enhance animal production, converting these products or by-products in good quality protein of animal origin. Research to improve the fermentation process during ensiling of these materials and their incorporation with other available resources must continue.

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