China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (11): 3484-3492.doi: 10.16431/j.cnki.1671-7236.2020.11.009

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Effects of Attapulgite Nano Zinc Oxide on Antioxidant Function and Immune Function in Spleen of Weaned Pigs

LI Hongmin, DONG Li, HU Zhenzhen, MAO Junzhou, ZHANG Yongsheng, LIU Jun, YU Lihuai   

  1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
  • Received:2020-05-18 Online:2020-11-20 Published:2020-11-20

Abstract: The experiment was conducted to explore the effects of attapulgite nano zinc oxide (ANZ) on antioxidant and immune functions in spleen of weaned piglets.210 weaned piglets of similar weight were randomly divided into 7 groups with 6 replicates in each group and 5 piglets per repeat.The treatments were control group (CON group,basal diet),antibiotic group (ANT group,basal diet+antibiotic),zinc oxide group (ZO group,basal diet+3 000 mg/kg zinc oxide),nano-zinc oxide group (NZO group,basal diet+800 mg/kg nano-zinc oxide),low,middle and high dose attapulgite nano zinc oxide groups (LANZ group,basal diet+700 mg/kg attapulgite nano zinc oxide;MANZ group,basal diet+1 000 mg/kg attapulgite nano zinc oxide;HANZ group,basal diet+1 300 mg/kg attapulgite nano zinc oxide).The results showed that:Compared with CON group,spleen index in ZO,MANZ and HANZ groups increased significantly (P<0.05).Compared with CON and ANT groups,the area of spleen cells in NZO,LANZ,MANZ and HANZ groups increased significantly (P<0.05).Compared with other treatment groups,the size of spleen cells in MANZ group increased significantly (P<0.05).Compared with CON,ANT,NZO and HANZ groups,superoxide dismutase (SOD) activity in MANZ group increased significantly (P<0.05).Compared with ZO and NZO groups,catalase (CAT) activity in LANZ,MANZ and HANZ groups increased significantly (P<0.05).Compared with ZO group,the content of malondialdehyde (MDA) in NZO,LANZ,MANZ and HANZ groups decreased significantly (P<0.05).Compared with CON group,the content of interferon-γ (IFN-γ) in ANT,MANZ and HANZ groups decreased significantly (P<0.05).Compared with CON,ANT,ZO and NZO groups,the content of tumor necrosis factor-α (TNF-α) in MANZ and HANZ groups decreased significantly (P<0.05).Compared with ANT group,the content of interleukin-1 β (IL-1 β) in MANZ group decreased significantly (P<0.05).Compared with ANZ、ZO and NZO groups,the content of interleukin-10 (IL-10) in MANZ and HANZ groups increased significantly (P<0.05).Compared with CON,ANT and ZO groups,the content of interleukin-12 (IL-12) in LANZ and MANZ groups increased significantly (P<0.05).In conclusion,attapulgite nano zinc oxide could increase organ index and cell size of spleen,improved the antioxidant enzymes activity in spleen,decreased the content of proinflammatory factors,increased the content of anti-inflammatory factors,and enhanced the antioxidant and immune functions of weaned piglets.The optimum addition level of attapulgite nano zinc oxide was 1 000 mg/kg in this experiment.

Key words: attapulgite nano zinc oxide; weaned piglets; spleen index; cell size; antioxidant; immunity

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