Dry matter intake linearly increased (Po0.05) as DCAD
increased (Table 2). The response is represented by the
equation y¼0.003xþ13.194 (R2¼0.98; Fig. 1). For milk
production, a positive linear relation (Po0.05) between
DCAD and production was obtained (Table 2). The curve
equation was y¼0.0062xþ14.937 (R2¼0.95; Fig. 2). No
difference (P¼0.056) in feed efficiency among treatments
was found, confirming that milk production increased due
to the increase of DMI (Table 2).