African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5233

Full Length Research Paper

Parasporal crystal proteins of Bacillus thuringiensis strain BT6, originating from the faeces of Sika Deer, demonstrate anticoccidial activity against Eimeria tenella in chickens

  Changbiao Wu, Lili Wu, Lei Xu, Xiong Guan and Lingling Zhang*
Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
Email: [email protected]

  •  Accepted: 17 June 2013
  •  Published: 16 August 2013



The parasporal crystal proteins (Cry) of Bacillus thuringiensis (Bt) strain BT6, which was isolated from Sika Deer faeces, exhibited a similar effect with diclazuril for controlling the infection with Eimeria tenella in chickens. A far more considerable body weight gain was found in the chickens treated with BT6 Cry proteins, as compared to chemical drug-treated groups, infected-untreated groups and even the uninfected group. This work is a preliminary contribution aiming to develop Bt Cry proteins for fighting coccidiosis in chickens.


Key words: Bacillus thuringiensis, faeces, parasporal crystal proteins, coccidiostatic,Eimeria tenella, chicken.