The study looked at how solid-state fermentation affects date palm leaves (DPL) and how it influences lamb performance, both with and without single-cell protein. DPL was fermented using three different strains of microbes. Using the Cornell Net Carbohydrates and Protein System, the nutritional value of DPL treatments, including fermented date palm leaves (FDPL) and DPL supplemented with single-cell protein designated as high...