Three-breed (Montbéliarde, Viking Red, Holstein) rotational crossbred (ProCROSS) cows (n = 44) were compared with Holstein cows (n = 41) for feed intake, production, and body traits during the first 150 d of first lactation. Cows calved in the University of Minnesota campus herd from September 2014 to April 2016. A total mixed ration (TMR) was fed twice daily, and refusals were weighed once daily. All cows were individually fed the same TMR on an ad libitum basis. Feed intake was recorded and dry matter intake (DMI) was calculated. Body weights were recorded twice weekly, body condition score (BCS) was evaluated once weekly, and height at both the withers and the hips was measured once a month. Best prediction (BP) was used to estimate production from data collected from routine milk recording. Mean body weight and BCS were calculated for monthly periods. Statistical analysis of total 150-d DMI included the fixed effects of year, age at calving, breed, and the interaction of year and age at calving and the random effect of cow nested within breed. A similar model was used for production traits except age at calving was removed because this variable is adjusted for by BP. Month nested within breed was an additional fixed effect for the body traits. Crossbred cows (2,770 kg) consumed significantly (P < 0.01) less DMI during the first 150 d of lactation than Holstein cows (2,922 kg). Fat plus protein production was not different (P = 0.54) for crossbred (338 kg) and Holstein cows (328 kg), but the crossbreds were numerically higher. Crossbred cows (3.39) had significantly higher (P < 0.01) BCS than Holstein cows (3.16) during the first 150 d of lactation. However, body weight was not different (P = 0.33) between the crossbreds (556 kg) and Holsteins (545 kg). Crossbred cows (136 cm) were shorter (P < 0.01) for height at the withers than Holstein cows (138 cm), but similar (P = 0.51) for height at the hips (143 cm vs. 144 cm, respectively).