Involvement of Quebracho tannins in diet alters productive and reproductive efficiency of postpartum buffalo cows.

This study was conducted to investigate the effects of 10 weeks supplementation of Quebracho tannins (QT; 0 [control], 100 [QT] or 200 g/[cow·d] [QT]) to 30 multiparous postpartum buffalo cows (10 cows per group) on milk yield and composition, blood metabolites and reproductive performance. Supplementation of QT had no significant effect on milk yield, whereas QT decreased ( < 0.05) this trait.