Abstract
ABSTRACT: This study was accomplished with the aim to evaluate and to characterize the risks for the presence of Megninia spp. in poultry farms from Minas Gerais, using for that Correspondence Analysis (CA). A secondary database was used and adapted for this study, with information from 402 chicken houses of 42 laying hens commercial properties. Variables used to compose the correspondence model were selected through tests of Qui-square being considered the significant result of P≤0,05. A risk index was built to the presence of Megninia spp. starting from variables considered as risk factors for the presence of those ectoparasites. The CA graph produced for the epidemiological characterization of the presence of Megninia spp. presented an accumulated qui-square value of 58,55%. There was an association of the risk index with the age ranges of the poultry, among the presence Megninia spp. and the use of mineral oil and acaricide in the ration and; finally, an association between the ruddy ground-dove (Columbina talpacoti) presence and the absence of mites of the Megninia genus. The results supply knowledge on the epidemiology of Megninia spp. In addition, these information can contribute in the decision, reducing the risks of possible infestations in poultry farms and the negative effects of that parasitism.
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