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Centro de Investigaciones Regionales Dr. Hideyo Noguchi, Universidad Autónoma de Yucatán

2000, Number 2

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Rev Biomed 2000; 11 (2)

Frequency of atrophic rinitis and grade lesions in pig nasal turbinates in Yucatan, Mexico

Torres-León MA, Williams JJ, Castro-Aguilar FJ, Salazar-Fajardo MR

Language: Spanish
References: 20
Page: 99-105
PDF size: 77.16 Kb.


ABSTRACT

Introduction. The respiratory complex in pigs is one of the most important syndromes in the pig industry. Mortality, low weight gain, low food conversion and cost of treatments, are the most important effects in the pig industry. The objective of the present study was to determine the frequency of snout macroscopy lesions in fattening pigs from the municipal market (No. 32) of Merida, Yucatan, Mexico.
Material and Methods. A hundred and one fattening pig snouts from the municipal market of Merida, Yucatan, Mexico (No. 32) were inspected from April to June 1997. The degree of rinitis was evaluated using a rinometry. Histopathology and bacteriology exams were carried out on the positive cases of progressive atrophic rinitis (PAR).
Results. Fifty five snouts showed PAR (54.5%). Thirty three nasal turbinates (60.0%) showed grade 2, 17 (30.9%) grade 3 and 5 (9.1%9) grade 4. Inclusion bodies were found in one case 1 (1.8 %) with grade 4 of PAR. In 2 cases of PAR, Pasteurella multocida was isolated, corresponding to 2 and 4 grade. In 3 samples (5.5%) Bordetella bronchiseptica was isolated, corresponding to 2, 3 and 4 of RAP.
Discusion. The differences of PAR found in the present study and those reported by other authors were probably due to the type of test used in the studies. The low frequency of agent isolation was probably due to samples being taken in the slaughterhouse where there is a high risk of contamination. The PAR were probably associated with B bronchiseptica, P multocida and Citomegalovirus. It is the first report of PAR with inclusion bodies in Yucatan state. This result shows that PAR is not associated with only one etiologic agent.


REFERENCES

  1. Monroy MA, Doporto D, Zuñiga H, Trujillo ME. Evaluación en rastros: Herramienta útil para controlar enfermedades (primera parte). Tecnología Avipecuaria 1994; 11-18.

  2. De Jong MF. (Progresive) Atrophic rhinitis. En: Leman A, Straw B, Mengeling W, D´Allaire S. Taylor D, ed. Disease of swine. 7ª ed. Ames, Iowa: University press; 1992. p. 414–35.

  3. Márquez M. Trigo T, Monroy J. Informe de un caso de rinitis con cuerpos de inclusión. Vet Méx 1986; 17:199-201.

  4. Christensen N, Cullinane LC. Monitoring the health of pigs in New Zealand abattoirs. New Zealand Vet J 1990; 38:136-41.

  5. Straw BE. Slaugther check metodology. Animal Association of Swine Practitioner 1986; 35-40.

  6. Luna LG. Manual of histopatologic stainining methods of the Armed Forces Institute of Pathology. 3ª ed. Edit. New York: McGraw Hill; 1968. p. 31-4.

  7. Smith IM, Baskerville AJ. A selective medium facilitating the isolation recognition of Bordetella bronchiseptica. in pigs. Res Vet Sci 1979; 27:187-92.

  8. Lariviere S, Leblanc L, Mittal KR, Martineau G. Comparason of isolation methods for the recovery of Bordetella bronchiseptica and Pastereulla multocida from the nasal cavities of piglets. J Clin Microb 1993; 31:363-7.

  9. Echeverría P, Salazar R. Manual de bacteriología veterinaria. Mérida: Universidad Autónoma de Yucatán, México; 1995. p. 31-2.

  10. Dean J, Coloubier D, Smith D, Drendell K, Arner T, Dean A. Epiinfo. A word processing database and statistics program for public health (computer program) version 6.02. Center for Disease Control and Prevention (CDC) U.S.A. World Health Organization Geneva, Switzerland; 1994.

  11. Thrusfield M. Epidemiología veterinaria. Madrid: Acribia; 1990. p.339.

  12. Ramírez N, Pijoan A. Diagnóstico de la enfermedades del cerdo. México: Diana; 1982. p. 521-5.

  13. Taylor D J. Enfermedades del cerdo. México: Manual Moderno; 1987. p. 137-41.

  14. Elanco Products Company. Trac Clinics: total respiratory analisis and control. Indianapolis: Elanco Products Company; 1984.

  15. Penny R, Mullen P. Atrophic rhinitis of pigs. Abattoir studies. Vet Rec 1975; 96:518-21.

  16. Cowart RP, Lipsey RJ, Hedrick HB. Measurement of conchal atrophy and pnemonic lesions and their association with growth rate in commingled feeder pigs. JAVMA 1990; 196:1262-4.

  17. Korenfeld KL. Observaciones de la frecuencia de rinitis atrófica porcina en diverso rastros del Distrito Federal y el Estado de México. Tesis de Licenciatura. Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México; 1977.

  18. Monroy MA, Doporto D, Zuñiga H, Trujillo ME. Evaluación en rastros: herramienta útil para controlar enfermedades (segunda parte). Tecnología Avipecuaria 1994; 21-7.

  19. López M, Mercadillo A, Galván E, Ramírez G, Jimémez E, Haro M. Frecuencia de aislamientos de Pasteurella multocida A y D, y Bordetella bronchiseptica a partir de hisopos nasales de 1986 a 1992. Memorias del XXVIII Congreso de la Asociación de Médicos Veterinarios Especialistas en Cerdos; Cancún, México. Septiembre 15-18, 1993. p. 234-6.

  20. Ackermann MR, Register KB. Rinitis Atrófica. Pigs Misset. Especial de.enfermedades respiratorias de los cerdos. 1995; septiembre. p. 24-5.




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