TABLE 3.

Incidence of milk fever according to parity in Holstein cows.

Parity of cow	Total number of parturitions	Number of milk fever cases	Incidence of milk fever (%)
2	70	1	1.43
3	165	3	1.82
4	275	8	2.91
> 4	362	30	8.29
Overall	872	42	4.82