China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (7): 2547-2556.doi: 10.16431/j.cnki.1671-7236.2022.07.012

• Nutrition and Feed • Previous Articles     Next Articles

Effects of Dietary Bacillus licheniformis and Bacillus amyloliquefaciens on Growth Performance and Blood Indicators of Weaned Piglets

CHEN Xueying1, WANG Huisheng1, WU Jie2, DENG Bo2, DIAO Xinping1   

  1. 1. College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China;
    2. Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2021-12-20 Online:2022-07-05 Published:2022-06-29

Abstract: 【Objective】 This study was conducted to investigate the effects of Bacillus licheniformis and Bacillus amyloliquefaciens supplementation on the growth performance,blood routine,serum biochemical indicators and antioxidant and inflammation indexes of weaned piglets.【Method】 A total of 108 28-day-old weaned piglets (Duroc×Landrace×Yorkshire) were selected and divided into 3 groups according to body weight,with 6 replicates per group and 6 piglets per replicate.The piglets in control group were fed with basal diet,and the other two groups were supplemented with 1 g/kg Bacillus licheniformis or 1 g/kg Bacillus amyloliquefaciens in the basal diet.The experiment lasted for 28 days.At the 14th and 28th days,fasting piglets were weighed and piglets intake were calculated,two piglets were selected from each replication,and the plasma samples were collected from the anterior vena cava,the blood parameters were detected by hematology analyzer and kit.【Result】 There were no significant difference in average daily gain (ADG),average daily feed intake (ADFI) and feed/gain ratio (F/G) among three experiment groups (P>0.05).Compared with control group,the diarrhea rate of weaned piglets in Bacillus amyloliquefaciens group was significantly decreased (P<0.05).At the 14th day,the percentage of blood lymphocytes percentage of weaned piglets in Bacillus licheniformis and Bacillus amyloliquefaciens groups were significantly increased,while the contents of interleukin-2 (IL-2) and malondialdehyde (MDA),and the activities of lactate dehydrogenase and aspartate aminotransferase were significantly decreased (P<0.05).At the 14th day,the serum alkaline phosphatase activity of weaned piglets in Bacillus amyloliquefaciens group was significantly decreased,while the hemoglobin was significantly increased (P<0.05).At the 28th day,the content of IL-2 of weaned piglets in Bacillus amyloliquefaciens group was significantly decreased,while the contents of total protein and globulin were significantly increased (P<0.05).【Conclusion】 The supplement of Bacillus licheniformis or Bacillus amyloliquefaciens had no outstanding effects on the growth performance,but it could improve the blood biochemical indicators and protect the liver of weaned piglets,and the supplement of Bacillus amyloliquefaciens could also improve the metabolism of piglets and decrease the diarrhea rate of piglets.

Key words: Bacillus licheniformis; Bacillus amyloliquefaciens; weaned piglets; growth performance; blood indicators

CLC Number: