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Publication
Estudo De Osteomielite Em Suínos Adultos
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Abstract(s)
A osteomielite é uma doença supurativa que consiste na infeção bacteriana e deterioração do osso. Em suínos adultos (i.e., com idade superior a seis meses), esta doença está frequentemente associada a lotes ou explorações com presença de comportamentos prejudiciais devido à falta de enriquecimento ambiental, como mordeduras de caudas e orelhas. Adicionalmente, está associada a condições climáticas desfavoráveis, baixa higiene e elevada densidade em suiniculturas, bem como fraca qualidade das dietas utilizadas. Em matadouro, verifica-se que em carcaças de suínos adultos com lesões como mordedura de cauda, há um maior risco de presença, não só osteomielite, mas também de lesões pulmonares, abcessos e artrite.
Em Portugal, a osteomielite é a principal causa de rejeição de carcaças de suínos adultos em matadouro, e por isso, está associada a uma perda económica considerável. Adicionalmente, esta doença é de elevada importância para a Saúde Pública, tornando a carcaça imprópria para consumo humano.
Apesar disso, existem ainda poucos estudos sobre a respetiva etiologia e caracterização.
Pelo que antecede, o presente estudo teve o objetivo de identificar os agentes etiológicos de lesões de osteomielite observadas em carcaças de suíno num matadouro, e caracterizar as lesões presentes.
Das cinco carcaças de suínos adultos incluídas no estudo, com lesões compatíveis com osteomielite, foram recolhidas cinco amostras para análise microbiológica e respetiva identificação dos agentes etiológicos. Todas as carcaças de onde foram recolhidas as amostras pertenciam a animais com idade de seis meses e criados em sistemas de produção intensivos. As lesões localizavam-se na sua maioria na mandíbula (n=3), uma na cabeça (crânio) e uma na medula óssea da vértebra sacral S2. Apenas um dos animais era fêmea e os restantes quatro eram machos. A partir dos 11 isolados obtidos, foram identificados os agentes Rhizobium radiobacter, Complexo Acinetobacter baumannii-calcoaceticus, Sphingomonas paucimobilis e Pseudomonas luteola. A bactéria R. radiobacter foi o agente encontrado em maior número de amostras.
São necessários estudos adicionais que, com recurso a maior número de amostras e análise molecular, possam contribuir para um maior conhecimento da doença e para melhor habilitar o Médico Veterinário Oficial na decisão sanitária em presença de carcaças com osteomielite.
Osteomyelitis is a suppurative disease which consists of bacterial infection and deterioration of the bone. In adult pigs (i.e., older than six months), this disease is often associated with batches or farms featuring harmful behaviours due to lack of environmental enrichment, such as tail and ear biting. Additionally, it is associated with unfavourable climatic conditions, low hygiene and high density in pig farms, as well as poor quality of the diets used. In the slaughterhouse, it is found that in carcasses of adult pigs with injuries such as tail biting, there is a greater risk of, not only osteomyelitis, but also lung lesions, abscesses and arthritis. In Portugal, osteomyelitis is the main cause of rejection of adult pig carcasses in slaughterhouses, and so associated with considerable economic loss. Additionally, this disease is of high importance to Public Health, making the carcasses unfit for human consumption. Although osteomyelitis is the main cause of rejection of adult pig carcasses in slaughterhouses, there are still few studies on its aetiology and characterization. Based on the above, the present study aimed to identify the etiological agents of osteomyelitis lesions observed in pig carcasses in a slaughterhouse, as well as characterize the lesions. Of the five carcasses of adult pigs included in the study with lesions compatible with osteomyelitis, five samples were collected for microbiological analysis and respective identification of the etiological agents. All carcasses from which samples were collected belonged to animals aged six months and raised in intensive production systems. The lesions were mostly located in the mandible (n=3), one in the head (skull) and one in the bone marrow of the S2 sacral vertebra. Only one of the animals was female and the remaining four were males. From the 11 isolates obtained, the agents Rhizobium radiobacter, Acinetobacter baumannii-calcoaceticus Complex, Sphingomonas paucimobilis and Pseudomonas luteola were identified. The bacterium R. radiobacter was the agent found in the largest number of samples. Additional studies are needed, using a greater number of samples and molecular analysis, which can contribute to greater knowledge of the disease and to better enable the Official Veterinarian to make decisions in the presence of carcasses with osteomyelitis
Osteomyelitis is a suppurative disease which consists of bacterial infection and deterioration of the bone. In adult pigs (i.e., older than six months), this disease is often associated with batches or farms featuring harmful behaviours due to lack of environmental enrichment, such as tail and ear biting. Additionally, it is associated with unfavourable climatic conditions, low hygiene and high density in pig farms, as well as poor quality of the diets used. In the slaughterhouse, it is found that in carcasses of adult pigs with injuries such as tail biting, there is a greater risk of, not only osteomyelitis, but also lung lesions, abscesses and arthritis. In Portugal, osteomyelitis is the main cause of rejection of adult pig carcasses in slaughterhouses, and so associated with considerable economic loss. Additionally, this disease is of high importance to Public Health, making the carcasses unfit for human consumption. Although osteomyelitis is the main cause of rejection of adult pig carcasses in slaughterhouses, there are still few studies on its aetiology and characterization. Based on the above, the present study aimed to identify the etiological agents of osteomyelitis lesions observed in pig carcasses in a slaughterhouse, as well as characterize the lesions. Of the five carcasses of adult pigs included in the study with lesions compatible with osteomyelitis, five samples were collected for microbiological analysis and respective identification of the etiological agents. All carcasses from which samples were collected belonged to animals aged six months and raised in intensive production systems. The lesions were mostly located in the mandible (n=3), one in the head (skull) and one in the bone marrow of the S2 sacral vertebra. Only one of the animals was female and the remaining four were males. From the 11 isolates obtained, the agents Rhizobium radiobacter, Acinetobacter baumannii-calcoaceticus Complex, Sphingomonas paucimobilis and Pseudomonas luteola were identified. The bacterium R. radiobacter was the agent found in the largest number of samples. Additional studies are needed, using a greater number of samples and molecular analysis, which can contribute to greater knowledge of the disease and to better enable the Official Veterinarian to make decisions in the presence of carcasses with osteomyelitis
Description
Keywords
Análise Microbiológica Médico Veterinário Oficial Osso Saúde Pública Microbiologic Analysis Official Veterinarian Bone Public Health