The levels of IgG in colostrum is responsible for the natural passive immunity of piglets, so effectively obtaining colostrum is important to survival and growth of newborn piglets. A study was conducted to evaluate the ability of newborn Minpig piglets to obtain IgG from colostrum. Four pairs of Minpig and Landrace sows (3–5 parity), with each pair farrowing their first piglet within an hour, were used. The 6 first born piglets were removed from their dam immediately after birth to prevent them from suckling colostrum. Then 3 out of 6 piglets in each litter were cross-fostered to a sow of another breed, resulting in 4 treatment groups: MM (Minpig piglets nursed by Minpig sows), ML (Landrace nursed by Minpig), LM (Minpig nursed by Landrace), and LL (Landrace nursed by Landrace), with 12 piglets in each group. Blood samples were collected from all piglets at 12 h, 24 h, 36 h, 48 h, 72 h, and 7 d after birth to determine concentrations of IgG using ELISA. Serum IgG concentrations for MM, ML, LM, and LL groups were 58.95 ± 3.33, 53.81 ± 3.64, 54.03 ± 3.11, and 48.89 ± 2.60 mg/ml, respectively, at 24h after birth. Compared with Landrace piglets, Minpig piglets had higher IgG concentrations (P < 0.05) regardless of being nursed by Minpig or Landrace sows. To further verify the efficiency of Minpig piglets to absorb IgG, a piglet from each 5 litters of Minpig and Landrace were tube-fed bovine IgG (1000mg/kg·BW) at 0 h, 6 h, 12 h, 24 h, 36 h, 48 h, and 72 h after birth, respectively. Blood samples were collected from the piglets at 6h after eating BIgG, and the absorption efficiency of BIgG was calculated for each piglet based on: {[serum BIgG concentration × BW × 0.10 × (1 − hematocrit)]/BIgG consumed} × 100%. Results indicate that Minpig piglets had higher absorption efficiency of exogenous BIgG than Landrace piglets (19.82 ± 1.55 vs. 17.07 ± 1.18 at 24 h, P < 0.05; 17.25 ± 1.63 vs. 14.43 ± 1.43 at 36 h, P < 0.05). These results suggest that Minpig piglets had a stronger capability to obtain passive immunity through milk and feed compare with Landrace piglets during the suckling period.