the aim of present experiment was to investigate the feeding value of wild pistachio leaf (khinjuk leaf, kl) for arabi sheep. the digestibility and fermentation of diets containing different amounts of khinjuk (0, 5, 10, 15, 20, 25 and 30%) were measured. then, the effect of presence of kl in the diet and its tannin content on the digestibility of alfalfa hay (alfa), wheat straw (ws) and soybea...