**Abbreviations**

Acid detergent fiber (ADF), Acid detergent lignin (ADL), Crude fiber (CF), Crude protein (CP), Dry matter (DM), Dry matter intake (DMI), Effective degradability (ED), *Erythrina edulis* (*Euphorbia edulis*), Ether extract (E.E), Fructification stage (SF), Microbial protein (MP), Neutral detergent fiber (NDF), N-free extract (NFE), Next energy for lactation (NEL), Organic matter (OM), Standard error of the mean (SEM), vegetative stage (SV)
