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Effects of dietary GSP supplementation on Ig in colostrum of sows. GSP = grape seed polyphenols; CON = basal diet; 200VE = basal diet + 200 IU/kg vitamin E; 200GSP = basal diet + 200 mg/kg GSP; 300GSP = basal diet + 300 mg/kg GSP. Data are mean ± SEM. a,bMeans values within a bar with different letters superscripts means significantly different (P < 0.05).
