Resumen

COSTA, A.; ARESTEGUI, M.  y  SIGNORINI, M.L.. Factores de riesgo asociados a la aparición de alteraciones ganglionares mandibulares en bovinos. Rev. vet. [online]. 2018, vol.29, n.2, pp.98-103. ISSN 1669-6840.  http://dx.doi.org/10.30972/vet.2923272.

In cattle, mandibular lymph node (MLN) alterations, located on head and neck, are commonly diagnosed as actinobacillosis in livestock production farms, as well as in sanitary inspections of slaughterhouses. The epidemiological aspects of these abnormalities are rarely approached in literature and little is known about the factors associated to their various clinical manifestations. The objectives of this work were to assess the prevalence of MLN in cattle farms from Caseros District in Santa Fe Province (Argentina) and to identify the risk factors associated to its presentation. An observational, cross-sectional study was carried out by sampling livestock farms (n=27). A 1.3% prevalence was detected in productive units under grazing systems. The higher prevalence observed was significantly associated or showed tendencies to variables related to animal management in the farms. A higher MLN prevalence was associated to factors such as negative work balance (p= 0.048), irregular veterinarian visits (p= 0.090), operators with less than two years of experience (p= 0.092) and animals with poor body condition in farms (p= 0.071). These factors involve different situations which act against animal welfare and may be linked to chronic stress. This work also raises the discussion about the endemic nature of actinobacillosis and the need of more studies that account for the possible seasonal tendencies, in relation to its form of manifestation and to the non-sporadic and possibly widespread nature of this condition in the region.

Palabras clave : bovino; actinobacilosis; factores asociados; manejo; epidemiología; cattle; actinobacillosis; associate factors; handling; epidemiology.

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