›› 2019, Vol. 46 ›› Issue (1): 166-173.doi: 10.16431/j.cnki.1671-7236.2019.01.019

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Effect of Oligo-chitosan Supplemented in Sow Diet on Growth,Antioxidant Capacity and Immunologic Function of Suckling Piglets

LIU Yingying1,2, REN Huibo1,2,3, ZHANG Xing1,2,4, DENG Yuan1,2,3, LUO Xuan1,2, CHEN Chen1,2, HU Xionggui1,2, ZHU Ji1,2, PENG Yinglin1,2,3   

  1. 1. Hunan Institute of Animal and Veterinary Sciences, Changsha 410131, China;
    2. Hunan Pig Industry Technology System, Changsha 410131, China;
    3. Hunan Co-innovation Center of Animal Production Safety, Changsha 410128, China;
    4. Hunan Xinguang'an Agriculture and Livestock Limited Co., Ltd., Changsha 410129, China
  • Received:2018-06-20 Online:2019-01-20 Published:2019-01-19

Abstract:

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 assigned into 3 groups with 8 replicates per group and 1 sow per replicate.Sows in the control group were fed the basal diet and the others in the experimental groups Ⅰ and Ⅱ were fed the basal diet supplemented with 50 and 100 g/t oligo-chitosan,respectively.The experiment lasted from the 85th day of pregnancy to the 21st day after delivery.The results showed as follows:①The diarrhea rate of suckling piglets in group Ⅱ was significantly lower than those in group Ⅰ and 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 groups Ⅰ and Ⅱ were much higher than that in control group (P < 0.05).②Compared with the control group,the activity of LDH and the concentration of TG in group Ⅰ,activities of α-AMY and LDH,and concentration of LDL in group Ⅱ were significantly decreased (P < 0.05).③The activity of SOD,levels of cortisol,IL-10,IL-1β,TNF-α and IFN-γ in group Ⅱ were significantly higher than those in group Ⅰ and control group (P < 0.05),while the concentration of MDA was significantly lower than that in the control group (P < 0.05).④The concentrations of immunoglobulin IgG,IgA and IgM of sow milk in groups Ⅰ 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 group Ⅰ and 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.

Key words: oligo-chitosan; suckling piglets; growth performance; blood biochemical indices; immunologic function

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