China Animal Husbandry and Veterinary Medicine ›› 2023, Vol. 50 ›› Issue (8): 3123-3132.doi: 10.16431/j.cnki.1671-7236.2023.08.010

• Nutrition and Feed • Previous Articles    

The Effects of Cyberlindnera jadinii on Nutrient Utilization,Serum Biochemical Indexes and Fecal Fungi Composition in Growing Raccoon Dogs

ZHAO Dehui1,2, MA Cuiliu2,3, WU Yan3, LIU Keyuan3, ZHANG Borui3, ZHANG Haihua1, LIU Hanlu2,4   

  1. 1. Hebei Key Laboratory of Specialty Animal Germplasm Resources Exploration and Innovation, College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, China;
    2. College of Agriculture, Chifeng University, Chifeng 024000, China;
    3. Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China;
    4. Key Laboratory of Agro-ecological Protection & Explpitation and Utilization of Animal and Plant Resources in Eastern Inner Mongolia, Chifeng 024000, China
  • Received:2022-12-30 Published:2023-07-27

Abstract: 【Objective】 This experiment was conducted to investigate the effects of dietary supplementation of Cyberlindnera jadinii on nutrient digestibility,nitrogen metabolism,serum biochemical indexes and composition of fecal fungal community in growing raccoon dogs.【Method】 Forty-five healthy male raccoon dog with similar body weight at (60±5) day of age were randomly assigned to three treatment groups,with 15 raccoon dogs per group.Raccoon dogs in control group (N group) were fed a basal diet,raccoon dogs in experiment groups were fed the basal diet supplemented with low (L group) and high doses (H group) of Cyberlindnera jadinii,2 and 10 mL (1×109 CFU/mL) per animal every day,respectively.A 7-day pretest period preceded a formal test period of 30 days.Manure and rations samples were collected in the last 3 days of the trial period to determine the nutrient apparent digestibility.Blood was collected before the morning feeding and fresh manure was collected after the morning feeding at the end of the trial period to determine the serum biochemical and fecal fungi composition.【Result】 Compared with N group,①the digestibility of ether extract and crude protein of raccoon dogs in L group were significantly increased (P<0.05).The nitrogen retention and net protein utilization of raccoon dogs in L and H groups were significantly increased (P<0.05).The fecal nitrogen excretion of raccoon dogs in L group was significantly decreased (P<0.05).②Serum aspartate aminotransferase activity(AST) and triglycerides(TG) levels of raccoon dogs in L and H groups were significantly increased (P<0.05).③The Chao1 and ACE indices of fecal fungi of raccoon dogs in H group were significantly decreased (P<0.05).The relative abundances of Aspergillus and Talaromyces in the feces of raccoon dogs in L and H groups were significantly decreased (P<0.05).The relative abundance of Cladosporium in the feces of raccoon dogs in H group was significantly decreased (P<0.05).【Conclusion】 Dietary supplementation of Cyberlindnera jadinii could improve nutrient digestibility,nitrogen metabolism and reduce the relative abundance of harmful fungi in the feces of raccoon dogs.2 mL (1×109 CFU/mL) per animal every day might be the most suitable addition level under the experimental conditions.

Key words: Cyberlindnera jadinii; raccoon dogs; nutrient digestibility; nitrogen metabolism; fungi composition

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