The influence of coccidiostatic Baycox on the course of coccidiosis in broiler chicken

Author:

Balicka-Ramisz A.1,Laurans L.2,Batko M.3,Ramisz A.4

Affiliation:

1. West Pomerania University of Technology

2. Clinic of Infectious Diseases, Hepatology and Liver Transplantation, Pomeranian Medical University

3. Master of Biology High School Elbląg

4. Pomeranian Medical University

Abstract

The purpose of the research is to identify species of Eimeria spp. in chicken broilers suspected to be infected with coccidia and to determine the effect of coccidiostatics in the course of coccidiosis.Materials and methods. The study involved 20 six-week-old broiler chickens obtained from a farm heavily affected by coccidia (natural infection – a high oocyst incidence). Each group yielded 10 randomly picked chickens to be used in the experiment. The birds were divided into 2 groups 10 chickens each: control (I); Baycox-treated (II); Baycox was applied for 2 days in a concentration of 25 ppm in drinking water. Samples of broiler chickens’ droppings were tested qualitatively by the flotation method (Willis-Schlaaf) and then quantitatively by the McMaster technique. The chickens were killed 6 days post-treatment and their intestinal mean total lesion scores (MTLS) were graded 0 to 4 on an arbitrary scale described by Johnson and Reid (1970).Results and discussion. As a result of the research, six species of protozoa of the genus Eimeria were identified: E. acervulina, E. tenella, E. brunetti, E. maxima, E. mivati, E. necatrix, while E. necatrix and E. maxima were the dominant species. This proves the presence of such species as E. mivati, E. acervulina (76.34%) in the anterior segment of the intestine and E. necatrix, E. maxima (83.34%) – in the middle segment of the small intestine. Infections of E. brunetti broilers amounted to 51.11%. The most pathogenic species of E. tenella residing in the cecum was found in 37.53%. MTLS in the group of chickens that received Baycox was 0.33. The post-treatment oocyst indices in the second group amounted to 1 (1–50 oocysts in 1 g of faeces), in the control group MTLS was very high (2,5), the oocyst index exceeding 3. 

Publisher

Institute of Fundamental and Applied Parasitology of Animals and Plants

Reference15 articles.

1. Dagayeva А. B., Bakrieva R. М., Makhieva B. М. Eimeriosis in poultry: biology, spread and control measures in the Caspian Sea Region of the Russian Federation. Russian Journal of Parasitology. 2020; 14 (1): 29–34.

2. Doner S. Epidemiology of infection with Eimeria protozoa in vaccinated and unvaccinated broiler flocks against coccidiosis. Doctoral dissertation at SGGW Warsaw, 2018.

3. Doner S., Szeleszczuk P. Prevalence of Eimeria spp. In broiler chicken flocks in Poland. XI International Coccidiosis Conference 2014; September 2014, Dresden, Germany, s. 26-30. Explanation: 1, 2, 3, 4, intestinal sections identical to those in Fig. 1. Mean Total Lesion Score (MTLS) range: 0-4 Oocyst index: 0 1 = 1 – 50 oocysts in 1 g faeces 2 = 51 – 300 oocysts in 1 g faeces 3 = > 300 oocysts in 1 g faeces

4. Eckert J., Taylor M., Licois D., Coudret P., Catchpole J., Bucklar H. Identification of Eimeria and Isospora species and strains: Morphological and biological characteristics. In: Eckert J., Braun R., Shirley M. W. et al. Biotechnology. Guidelines on techniques in coccidioisis research office for official publications of the European Communities, 1995; Luxembourg.

5. Gaweł A., Bobusia K., Bobrek K. Identification of Eimeria spp. occurring in hens and broiler chickens in Poland, Med. Weter. 2015; 71 (6), 382-388.

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