Using spent Pleurotus ostreatus substrate to supplemented goats to increase fresh cheese yields

•Enzymatic extract obtained from spent Pleurotus ostreatus substrate.•Goat milk composition is modified by use of enzymatic extract.•Cheese yield increased using enzymatic extract. Goat milk composition can be influenced by diet, such as adding exogenous enzymes into the feed to improve digestibility. The objective of this study was to evaluate milk composition and cheese goat yield when ruminants consumed an enzymatic extract obtained from spent Pleurotus ostreatus substrate. A one-way experimental design was used in this study. Enzymatic activity and milk composition were measured (fat, lactose, minerals, protein, total solids and non-fatty solids) while fresh cheese yield and their traits, such as color and texture, were also were determined. The enzymatic extract presented xylanase, laccases and cellulases activity (32227.72, 2822.33 and 69.03 IU MS g−1, respectively). Results indicate that the enzymatic extract increased the cheese yield (P < 0.05), with T1000 treatment producing the best yield (21.3 %). Lightness, yellowness, and redness values were different (P < 0.05), while cheese texture parameters of hardness, adhesiveness, fracturability, springiness and chewiness were highest (P < 0.05) in T1000 treatment. Therefore, it can be concluded that adding the enzymatic extract of spent Pleurotus ostreatus substrate into the feeding of goats produces a higher yield in fresh cheese, and influences cheese color and texture.