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Body weight (g) of pups in the different study groups from birth (0–2 d) to weaning (21–30 d) periods. Values are expressed as mean. * Prenatal group had a statistically significant lower weight than did the pre+postnatal group at birth (P = 0.03). † Prenatal and postnatal groups were significantly different from nonexposed and pre+postnatal groups at 6 to 10 days of age (P = 0.01).
