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Loop-mediated Isothermal Amplification LAMP Assays for the Species-specific Detection of Eimeria that Infect Chickens
Published on: February 20, 2015
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Comparative analysis of evaluation parameters in E. acervulina, E. maxima and E. tenella-infected broilers
Rochelle Alipio Flores1, Binh Thanh Nguyen1, Paula Leona Tayamen Cammayo1
1College of Veterinary Medicine & Institute of Animal Medicine, Gyeongsang National University, Jinju 52828, Korea.
Journal of Veterinary Science
|November 30, 2022
Summary
Understanding Eimeria infections in broilers is key. Age and gender significantly impact broiler growth and lesion scores, with Eimeria maxima showing a strong link between weight gain and intestinal damage.
Area of Science:
- Veterinary Parasitology
- Poultry Science
- Animal Science
Background:
- Eimeria species are significant protozoan parasites causing coccidiosis in poultry.
- Coccidiosis negatively impacts broiler health, leading to reduced growth and economic losses.
- Key indicators for assessing infection severity include body weight gain (BWG), intestinal lesion scores (LS), and fecal oocyst shedding.
Purpose of the Study:
- To compare the effects of three major Eimeria species (E. acervulina, E. maxima, E. tenella) on broiler performance.
- To investigate the relationship between BWG, LS, and fecal oocyst shedding in infected broilers.
- To identify critical factors influencing Eimeria experimental outcomes.
Main Methods:
- Broiler chickens were experimentally infected with Eimeria acervulina, E. maxima, or E. tenella.
- Body weight gain (BWG) was monitored throughout the experimental period.
- Intestinal lesion scores (LS) were assessed post-mortem.
- Fecal oocyst shedding was quantified.
Main Results:
- Two- and three-week-old chickens infected with Eimeria exhibited similar intestinal lesion scores (LS) around 3.
- A stronger correlation between BWG and LS was observed in two-week-old chickens.
- Significant differences in BWG were noted between male and female broilers challenged with Eimeria.
- Broilers infected with Eimeria maxima demonstrated a higher correlation between BWG and LS compared to other species.
Conclusions:
- Broiler age and gender are crucial factors to consider in Eimeria infection studies.
- The choice of Eimeria species significantly influences the observed relationships between BWG and LS.
- Experimental designs for Eimeria research should account for age, gender, and specific parasite species for accurate results.
