ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2016, Vol. 47 ›› Issue (10): 2098-2107.doi: 10.11843/j.issn.0366-6964.2016.10.019

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The Susceptibility of Chinese Indigenous Chicken Breeds (Gallus gallus domesticus) to Eimeria tenella Infection

LI Jian-mei1，LIU Mei1，SHEN Xin-yue1，CHENG Xu1，JI Zheng-jian2，LIU Dan-dan2，YIN Jian-mei1，YOU Su-lan1，SU Yi-jun1,TAO Jian-ping2，DAI Ya-bin1*   

  1. (1.Poultry Institute，Chinese Academy of Agricultural Sciences，Yangzhou 225125，China；2.Ministry of Education Key Laboratory for Avian Preventive Medicine，College of Veterinary Medicine，Yangzhou University，Yangzhou 225009，China)
  • Received:2016-04-25 Online:2016-10-23 Published:2016-10-23

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Abstract:

This study was conducted to investigate the difference in susceptibility to Eimeria tenella infection among different chicken breeds (Gallus gallus domesticus).Twenty-six-day-old，coccidia-free chickens of 24 Chinese indigenous chicken breeds and one commercial breed，recessive white，were divided into two infected groups and one non-infected control group randomly，15 chickens each group.The infected groups were inoculated into crop with 1×105 sporulated E.tenella oocysts per bird.The mortality，relative rate of weight gain，cecal lesion scores，oocyst production and anticoccidial index (ACI) were measured as parameters for evaluation of the susceptibility of different breeds.Among 25 breeds，Langshan，Tibetan，Big bone，Xiaoshan，Wenchang，Anyi tile-like，Buff baier，Xianju，Daweishan mini and Jinhu silky chickens appeared clearly as the least susceptible，with the ACIs ranging from 56.80 to 85.76，showing no death or lower mortality，lower lesion score and higher relative rate of weight gain than other breeds，though higher oocyst production was found in those breeds except Tibetan chicken.Recessive white，Qingyuan partridge，Huiyang bearded，Gushi，Beijing oil，Piao and Wenshang barred chickens were the most susceptible with the ACIs ranging from -11.64 to 18.67，showing higher mortality (except Beijing oil chicken)，lower relative rate of gain，higher lesion scores and higher oocysts production (except Gushi chicken) than other breeds.The rest of the 8 breeds showed moderate susceptibility with the ACIs ranging from 29.81 to 53.36.There are significant differences in the susceptibility to E.tenella infection among different chicken breeds.And the meat type breeds showed higher susceptibility than eggs and meat breeds.

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