TABLE 1.

Correlation coefficients between the paired sow serum and colostrum and offspring serum test results for antibodies to the FMDV 3AB antigen

Farma	No. of sows tested	Correlation coefficient between:
		Sow sera and colostrum	Sow sera and offspring sera	Colostrum and offspring sera
CL	25	0.36	0.89	0.48
SW	17	1.0	0.89	0.89
HS	43	0.95	0.95	0.90
Total	85	0.86	0.93	0.81

^aSow sera, colostrums, and offspring sera were collected from three pig farms 2 years after the outbreak of FMD. At least half of the sows selected had been naturally exposed to FMDV for each pig farm.