Parasitoses dos bovinos: atitudes de pecuaristas em Minas Gerais, Brasil

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The objective of this work was to characterize animal management under conditioning factors of parasitosis control ways in cattle herds in the State of Minas Gerais, Brazil. From a total of 2500 interviews, 1289 were selected, relative to 555 municipalities of the 66 microregions of the State. Data were submitted to descriptive analysis and correspondence analysis to evaluate the effect of type of production in the parasitological control measures. By the descriptive analysis, dairy herds predominated (66.3%). As to use of antihelminthics, medication after clinical signs predominated (27.3%), identified by rough hair coats and body score (58.1%). Farmers tend to medicate the entire herd (55.9%) twice a year (45.0%). Among products utilized, avermectinclass drugs predominated (56.9%), without antihelminthic base rotation (48.8%). In regard to strategic control methods, 69.1% of the farmers were totally unaware of it. Farmers classified tick infestations as the major parasitary problem (53.2%), followed by bot fly infestations (22.5%). They would rather be assisted by Veterinarians (53.2%), but medicate on their own account (27.4%) and are assisted by non-veterinary healers in 11.7% of the cases. As verified by correspondence analysis, beef cattle farmers tended predominantly to follow the strategy of medicating with antihelminthics preferably in the beginning and in the end of the rainy season. Data observed showed predominant option for treating animals only when characteristic clinical signs are present or not treating at all, in the case of mixed and dairy farmers. Regarding dairy farmers, a more significant correspondence has been found of antihelminthics administration following observation of clinical signs with the lack of observation of characteristic clinical signs and the lack of perception of most parasitosis occurrences in their herds, where subclinical or unapparent presentation of the disease is paramount. Regarding beef cattle farmers, a trend to use antihelminthics in the case of wasting was found. Strategic control has high correspondence to management attitudes of the beef cattle farmers that also use curative and suppressive control in a low level of correspondence. Practically no correspondence was observed to any control form at all, regarding dairy farmers. Beef cattle farmers use preferably avermectin-class drugs. Dairy farmers, on the other hand, prefer benzimidazoles. A trend to use antihelminthics by their commercial name was found between mixed farmers. A positive association was found between beef cattle farmers and medication of the whole livestock, although there was a low association between type of production and animal group medicated in dairy and mixed farmers. A low association was found between antihelminthic base rotation and the dairy farmers that affirmed not to change it. Similar association was found, though, regarding farmers that affirmed to rotate antihelminthic bases every medication. A soft association is observed regarding sporadic antihelminthic base rotation and beef cattle and mixed farmers. As far as dairy farmers are concerned, a light association with tick infestation and tick fever was found; other parasitological problems were considered of equal importance by farmers, nonetheless. A light association was also found regarding bot fly occurrence in mixed herds. Higher association was reserved to beef cattle farmers, who revealed a great deal of association to the not-occurrence of such problems or their insignificancy. About the assistance preference, correspondence analysis revealed a light association between information seeking and veterinarian intervention, when animals get sick. Beef cattle farmers showed a light association, displaying preference for nonveterinary help from a neighbor or a healer. Mixed farmers, though, had a stronger association to medicate on their own. Results allowed to conclude that the several parasitosis control techniques indicated to cattle herds are unknown to most part of cattle farmers

ASSUNTO(S)

doenças parasitárias teses veterinária teses bovino doenças teses bovino parasito teses

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