Abstract: To investigate the effects of Compound Probiotics on immune functions in piglets.Sixty healthy primiparity piglets(the same age and similar weight) were divided into 4 groups: Compound Probiotics group(basis ration + 0.2 g/kg dried yeast +0.4 g/kg acidophilus), acidophilus group(basis ration +0.4 g/kg acidophilus), cod-liver oil group(basis ration +10 mL/kg cod-liver oil) and control group(basis ration) , peripheral blood IgG, IL-2, IL-5 and IFN-γ content were tested by ELISA kit. The results showed that compound probiotics could add the content of IgG, IL-2, IL-5 and IFN-γ in turn 102.76%,62.63%,53.71% and 33.45% from 15-day old to 55-day old, the compound probiotics group was significantly higher than other test control groups. So compound probiotics can be better enhance immune function of piglets.

Key words: piglets; compound probiotics; immune function; IgG; IL-2; IL-5; IFN-γ