Abstract
The Eimeria tenella Yulin strain (EtYL), which is sensitive to most anti-coccidial drugs, was isolated in the Yulin area of Guangxi, China. Then, Eimeria tenella Yulin precocious line (pEtYL), a precocious line with a prepatent period of 108 h, was obtained through early selection. The biological characteristics of pEtYL, including its morphology, purity, oocyst excretion curve, reproductive capacity, pathogenicity, immunogenicity, and preservation time, were comprehensively analyzed. The results showed that the isolated precocious line of E. tenella exhibited high purity, relatively weak pathogenicity, and good immunogenicity and can be used as a live vaccine line for chicken coccidiosis.
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Acknowledgements
We thank Tianjin Helinte Biotechnology Co., Ltd., and Ningxia Poultry Disease Prevention and Control & Healthy Breeding Innovation Team (2022BSB03107) for their support.
Funding
This research was supported by the Ningxia Natural Science Foundation Project (2022AAC05009) to ZXG, the National Natural Science Foundation of China (NSFC Grant No. 31272554), and the Agricultural Science and Technology Innovation Program (CAAS-ASTIP-2014-LVRI-09) to JPC.
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ZXG, QZG, and HMW performed the experiments. ZXG analyzed the data. FC contributed reagents/materials. ZXG wrote the paper. JPC designed the experiments and revised the manuscript. All the authors have read and approved the final manuscript.
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Gong, Z., Qu, Z., Wei, H. et al. Biological characteristics of a precocious line of Eimeria tenella. Parasitol Res 123, 167 (2024). https://doi.org/10.1007/s00436-024-08190-5
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DOI: https://doi.org/10.1007/s00436-024-08190-5