Figure 1.

Milk yield of lactating ¾ Holstein × ¼ Gir dairy cows assigned to receive (SUPP; n = 18) or not (CON; n = 18) 30 g/cow daily (as-fed basis) of a supplement containing condensed tannins, essential oils, and pungent compounds (Actifor Pro; Delacon Biotechnik GmbH; Steyregg, Austria) from d 0 to 84 of the experiment. Individual milk yield from d –7 to 0 were averaged and included as covariate; therefore, values reported are covariately adjusted least square means. Treatment and day effects were detected (P = 0.04 and < 0.01, respectively), whereas the treatment × day interaction was not significant (P = 0.73). Mean milk yield was greater (P = 0.04) in SUPP vs. CON cows (29.5 vs. 27.9 kg/d, respectively, SEM = 0.5).