Fig. 1From: Preweaning period is a critical window for rumen microbial regulation of average daily gain in Holstein heifer calvesPhenotypes of calves in the HADG and LADG groups at different periods. A Differences in feed intake, body weight and ADG between HADG and LADG calves in different periods. B Differences in serum indices of HADG and LADG calves in different periods. HADG, higher average daily gain group; LADG, lower average daily gain group; * represents significantly different between the two groups (P < 0.05). # represents a tendency to differ between the two groups (0.05 < P < 0.10)Back to article page