Table 3.

Mean weights of calves in each disease severity group at birth, 4 months, 5 months and 6 months with mean weight gains.

Severity group	Mean birth weight (kg)	Mean weight 4 months (kg)	Mean weight 5 months (kg)	Mean weight 6 months (kg)	Mean weight gain (6 months – birth (kg)	S.D. Mean weight (6 months)	Tukey grouping
High	48.3	170.3	222.6	276.1	227.8	21.4	A
Medium	45.5	170.6	224.3	272.3	226.7	47.5	AB
Low	46.5	205.1	262.6	310.1	263.6	21.6	B

A and B are post-hoc pairwise comparison groups. As the mean of the high group is significantly different from that of the low group, they have been assigned different Tukey groups (A and B). However as the mean of the medium group is not significantly different from either the high or low group, it has been assigned as AB.