TABLE 1.

Incidence of milk fever according to breed of cow.

Breed of cow	Total number of parturitions	Number of milk fever cases	Incidence of milk fever (%)
Jersey	406	60	14.78*
Holstein	872	42	4.82*
Overall	1278	102	7.98

^*Chi-square value = 37.43; p = 0.00; N = 1278. Difference was significant because p < 0.05.