Table 1.

Antibody level in serum against porcine parvovirus by the exposure to ZEA in female Wistar rats

Treatment	Antibody titer
	Before	2 weeks	4 weeks
Vac	ND	32.0 ± 2.0	194.0 ± 2.2
ZEA Low with Vac	ND	27.9 ± 3.5	256.0 ± 2.7
ZEA Medium with Vac	ND	6.3 ± 1.5	168.9 ± 2.2
ZEA High with Vac	ND	25.4 ± 1.5	181.0 ± 2.0

Rats in ZEA low, medium and high groups were administered with 1mg, 5mg and 30 mg ZEA/kg bw by gavage once per day for 35 days and Vac groups were vaccinated with 2.0mL of inactivated porcine parvovirus vaccine subcutaneously on day 8 (Vac, ZEA Low with Vac, ZEA Medium with Vac and ZEA High with Vac groups). Values are mean ± S.D. of 5 replicas. ND, not detected