The aim of this trial was to study the
effect of dietary supplementation with chestnut hydrolysable tannin extract on ewes milk yield and
quality. Ninety-six multiparous Sarda ewes in their mid-lactation phase were allotted to two homogeneous
groups (control group, C group; group fed concentrate supplemented with chestnut tannin extract,
CHE group), each of 48 animals, for a feeding trial. Animals of both groups grazed 8 h per day on the same
pasture based on a mixture of Lolium multiflorum, Avena sativa and Trifolium repens (1:1:1).