Aspectos Clínicos E Epidemiológicos Deum Foco De Sarna Sarcóptica Em Um Sistemaintensivo De Produção De Suínos Localizado No Município De Teresópolis-Go, Brasil

Abstract

A sarna sarcóptica continua sendo considerada um grande problema na suinocultura. O objetivo deste trabalho foi descrever as características clínicas e epidemiológicas de um foco de sarna sarcóptica em suínos mantidos em confinamento. O plantel de reprodutores era composto por 197 matrizes e 9 cachaços. Durante a visita seguiu-se um roteiro específico, anotando-se as informações relativas à epidemiologia da doença. Do plantel foram examinados individualmente 18 fêmeas e 5 machos, dos quais foram coletados raspados de pele do pavilhão auricular para exame parasitológico. Destes 23 raspados, 10 (43,5%) apresentaram resultado positivo, evidenciando a presença do agente da sarna sarcóptica na granja. A higiene e as instalações foram classificadas como ruins. Dos 206 reprodutores, 182 (88,4%) apresentavam prurido intenso, incluindo-se os animais nas fases de recria e terminação. Era bem evidente a heterogeneidade da condição corporal dos animais. As matrizes em gestação apresentavam alterações comportamentais. A gravidade do quadro sugere haver relação com as condições desfavoráveis de higiene e das instalações. A aerofagia e o ato de morder a barra de proteção e as bordas externa e interna do comedouro, que é do tipo calha, estão relacionados com a infestação por Sarcoptes scabiei var suis. DESCRITORES: Suíno. Pele. Ectoparasitose. Sarna sarcóptica. Comportamento.Sarcoptes sacabiei var suis. INTRODUÇÃONo início do terceiro milênio, as ectoparasitoses continuam sendo consideradas um grande problema na suinocultura, destacando-se entre elas a sarna

Research and extension action for parasitic control in pig breeding families located in Tanguá, Rio de Janeiro

“…suis infestation rates in pigs lower than and similar to that of this study were reported in industrial farms in Paraná (0.09%) and in Goiás (12.1%), respectively (Oliveira et al 2006, Silva et al 2002. Unlike the case records in Tanguá, Sobestiansky et al (2005) reported a high infestation rate (43%) on an industrial farm in Goiás, which already had a previous history of scabies.…”

“…suis might have been even higher if the skin of the ear had been scraped to a greater intradermal depth, where most mites burrow, or if biological material had also been collected from other parts of the pigs' bodies. According to Sobestiansky et al (2005), scabies can pose problems in pig farming by lowering production rates because mite infested pigs reduce their feed intake, thus slowing down their growth and weight gains. Other evolutionary forms of arthropods were detected in this study, such as eggs characteristic of arthropods that could be S. scabiei var.…”

“…In pigs, this ectoparasite can cause sarcoptic mange, i.e., scabies, manifested in the form of intense itching, causing extreme discomfort and favoring infestation by other secondary pathogenic organisms. Thus, scabies can cause economic losses for the producer through reduced growth rates of the animals, low reproductive efficiency, and increased carcass disposal rates in slaughterhouses (Sobestiansky et al 2005).…”

“…With regard to ectoparasites, all the studies conducted in Brazil focused on industrial farms, but none of them involved family farms. In the biological samples collected from pigs on industrial farms, positivity for Sarcoptes scabiei variety suis was reported, ranging from 0.09% to 16.6% in biological samples collected from pigs raised on farms in southern Brazil and 12.1% and 43.5% on farms in the north (Silva et al 2002, Pedroso-de-Paiva et al 2003, Sobestiansky et al 2005, Oliveira et al 2006.…”

Family-Run Pig Farms: Research and Extension Activities for Parasite Control in a Municipality in the State of Rio de Janeiro, Brazil

“…In this investigation, evolutionary forms of this parasite were detected in 3.5% of the pigs, mainly in biological samples of animals from the finishing group. However, studies conducted at other pig farms in Brazil have reported the detection of higher infestation rates by this arthropod (12.1% to 43%) [17,51,52]. Sarcoptic mange can be a problem in pig raising and may reduce the animal production performance, given that pigs infested by the mite may suffer from severe itching, causing them to stop feeding and thus reduce their feed conversion efficiency [53].…”