Table 5.

Housing of the heifers and adaptation period in weeks for first lactation heifers.

Variable	Class	Number of herds (n)
Floor for heifers	Concrete	6
	Slatted floor	45
	Other	4
Housing from	Tie stall	9
insemination	Pen	35
to calving	Free stall	5
	Other	9
Adaptation	≤ 3	15
period	>3	42