Frequency of Eimeria spp in some farms of the poultry area of Tehuacan in the State of Puebla in Mexico

Reynaldo Moreno Díaz; Froylán Ibarra Velarde; Pedro Ochoa Galván

2001, Number 2

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Vet Mex 2001; 32 (2)

Frequency of Eimeria spp in some farms of the poultry area of Tehuacan in the State of Puebla in Mexico

Moreno DR, Ibarra VF, Ochoa GP

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Language: English/Spanish
References: 18
Page: 103-108
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ABSTRACT

The present study was aimed to estimate the age of maximum oocyst elimination, to find out about the relation on quantities elimination relative to environmental humidity, and to determine species of Eimeria and their frequency in eight productive cycles. This study was carried out in chicken houses of commercial farms under normal handling conditions and those with anticoccidial use in the poultry area of Tehuacan, in the State of Puebla in Mexico. Samples of fresh droppings of representative chicken houses from seven farms of the area were simultaneously studied from the second to the seventh week of age. Positive samples were quantified and identified by flotation and McMaster methods. It was found that the mean age of maximum oocysts elimination in the chickens was of 40 days. A direct relationship among productive cycles with higher oocysts elimination, and highest environmental relative humidity was also observed. Average frequency of Eimeria species in the area was: E. tenella, 40%; E. brunetti, 25.6%; E. maxima, 20.6%, and E. acervulina, 13.8%. However, frequency varied in the studied farms. In three of them, E. tenella was prevalent; in two E. brunetti, in one E. maxima, and in the remaining one a mixed combination of E. tenella, E. brunetti and E. maxima.

REFERENCES

1. Bafundo KW. Diferencia entre ionóforo anticoccidiales, consideraciones prácticas y expectativas realistas. Memorias del III Seminario Sobre Nutrición y Patología Aviar; 1995 marzo 17; Juriquilla (Querétaro). México (DF): Labs. Pfizer S.A. de C.V., 1995:13-17.
2. Braunius WW. Epidemiology of Eimeria in broiler flocks and the effect of anticoccidial drugs on the economic performance. Avian Pathol 1983;12:23-33.
3. McDougald LR. Chemotherapy of coccidiosis. Proceedings of the VIth International Coccidiosis Conference; 1993: 21-25; Ontario, Canada. Department of Pathology, University of Guelph 1993:45-47.
4. Ryley JF. Screening for and evaluation of anticoccidial activity. Adv Pharmacol Chemother 1980;17:1-23.
5. Von Voeten AC, Braunius WW. Subclinical coccidiosis in broiler. A comparative investigation of detection methods. Archiv Geflügelkd 1981;45:189-193.
6. Graat EAMl. Effects of initial litter contamination level with Eimeria acervulina on population dynamics and production characteristics in broilers. Vet Parasitol 1966;165:223-232.
7. Henken AM. Description of a simulation model for the population dynamics of Eimeria acervulina infection in broilers. Parasitology 1994;108:503-512.
8. Servicio Meteorológico Nacional. Registros mensuales. México (DF): Dirección de Geografía y Meteorología, Secretaría de Agricultura Ganadería y Recursos, 1999.
9. Moreno DR. Determinación del grado de patogenicidad de algunas cepas de Eimeria aisladas de pollos en México. Vet Méx 1980;2:1-7.
Long PL, Rowell JG. Counting oocysts of chicken coccidian. Lab Pract 1958;7:515-519.
Janssen Pharmaceutica. Diagnosis of coccidiosis in chickens. Manual. Beerse, Belgium: Janssen Pharmaceutica, 1990:1-33.
Long PL, Reid WM. A guide for the diagnosis of coccidiosis in chickens. Research report 404. Athens (Ge): College of Agriculture Experimental State University of Georgia, 1982.
Moreno DR. Diferencias en resultados entre los métodos de muestreo de cama y heces frescas en dicromato de potasio en el diagnóstico de la coccidiosis aviar. Memorias de la XXII Convención Anual de la ANECA; 1997 mayo 7-11; Ixtapa, Zihuatanejo (Gro.) México. México (DF): Asociación Nacional de Especialistas en Ciencias Avícolas, A.C., 1997:176-179.
Daniel WW. Bioestadística, base para el análisis de las ciencias de la salud. 3ª ed. México (DF): Limusa, 1999.
Microsoft Excel. Funciones estadísticas, versión 5.1. México (DF): Microsoft, Excel, 1997.
SAS Institute. SAS/STAT, versión 6.03. Cary (NC): SAS Institute Inc., 1987.
Zar JH. Biostatistical analysis. 3rd ed. Newark (NJ): Prentice Hall, 1996.
Rose ME. The influence of age of host on infection with E. tenella. J Parasitol 1967;53:924-929.