This study was conducted to explore the effect of oligo-chitosan supplemented in sow diet on growth,antioxidant capacity and immunologic function of suckling piglets.24 healthy Yorkshire sows with similar parity,body weight and expected date of confinement were assignedinto 3groups with 8replicates per group and 1sow per replicate.Sows in the control group were fed the basal diet and the others in the experimental groupsⅠandⅡ were fed the basal diet supplemented with 50 and 100g/t oligo-chitosan,respectively.The experiment lasted from the 85 th day of pregnancy to the 21 st day after delivery.The results showed as follows:(1)The diarrhea rate of suckling piglets in groupⅡ was significantly lower than those in groupⅠand the control group(P<0.05),while there was no significant difference between experimental group Ⅰ and the control group(P>0.05).The body weight at 21 days of age of suckling piglets in groupsⅠandⅡ were much higher than that in control group(P<0.05).(2)Compared with the control group,the activity of LDH and the concentration of TG in group Ⅰ,activities ofα-AMY and LDH,and concentration of LDL in groupⅡ were significantly decreased(P<0.05).(3)The activity of SOD,levels of cortisol,IL-10,IL-1β,TNF-αand IFN-γin groupⅡ were significantly higher than those in groupⅠand control group(P<0.05),while the concentration of MDA was significantly lower than that in the control group(P<0.05).(4)The concentrations of immunoglobulin IgG,IgA and IgM of sow milk in groupsⅠ and Ⅱ were much higher than those in the control group(P<0.05).Compared with the control group,the serum IgG and IgA levels of suckling piglets in groupⅠand IgA level in group Ⅱ were significantly increased(P<0.05).In conclusion,the addition of oligo-chitosan at a certain dose in sow diet could improves the antioxidant and immunity capacity,reduce the diarrhea rate,and thus improve the growth performance of suckling piglets,indicating oligo-chitosan was an effective feed additive.
China Animal Husbandry & Veterinary Medicine
blood biochemical indices