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Repositório da UTAD
Master thesis . 2018
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Inspeção sanitária integrada em pequenos ruminantes

Authors: Ferreira, João Pedro Jacob;

Inspeção sanitária integrada em pequenos ruminantes

Abstract

The Churra da Terra Quente breed shep (CTQ) is considered autochthonous in the region of the Terra Quente Transmontana where it is managed in its totality in semi-extensive and traditional way. The main products obtained with this breed, duly qualified, are the Terrincho DOP Cheese and the Terrincho DOP Lamb. The sanitary inspection is one of the medical-veterinary acts with recognized importance for food safety, through which it is verified the condemnation of meat unfit for human consumption during post mortem inspection at the abattoir level. These condemnations related to pathological changes may be favored by the occurrence of certain risk factors during animal production being associated with economic losses for the producer. The main objectives of this study were to record the causes of condemnation observed during sanitary inspection at a slaughterhouse of Churra Terra Quente breed lambs and to study possible risk factors at farm level associated to the occurrence of the recorded condemnations. In this study, the rejected viscera were the liver (35.17%) and the lung (19.7%). The main causes of hepatic rejection included lesions compatible with hepatoperitoneal cysticercosis (18.22%), non-specific parasitism (13.98%), distomatosis (2.54%) and abscesses (0.42%). Statistical analysis revealed that the percentage of liver failure due to hepatoperitoneal cysticercosis was higher in batches of lambs from farms whose owner had no professional training (p = 0.0125) and did not parasitize guard dogs (p < 0.0001). It was also found that liver condemnation due to distomatosis was higher in batches of lambs from herds provided with watering from natural courses (p < 0.0001). Concerning the lung, the causes of condemnation were compatible lesions with agonizing aspiration of blood and pulmonary petechiae (12.5%), parasitic pneumonia (3.6%), pulmonary hepatization (2.97%) and fibrinous pneumonia (0.64%). Statistical analysis showed that the percentage of lung condemned due to pulmonary hepatization was higher in batches of lambs from farms whose owner had no professional training (p = 0.0112) and not isolated villages and public roads (p = 0.0342). It was also found that the percentage of lung condemnation due to parasitic pneumonia was higher in batches of lambs from farms where the owner and employees did not wear specific clothing and footwear (p = 0.0006). The results of this study underlined the importance of professional training in the occurrence of changes leading to condemnation at abattoir level as well as in farm risk factors related. The knowledge of these factors could help production, as they guide the change in risk practices, thus enabling the reduction of the rates of condemnation in future batches of animals, improving the profitability of the economic operator.

A raça ovina Churra da Terra Quente (CTQ) é considerada autóctone da região da Terra Quente Transmontana, onde é explorada na sua totalidade em regime semiextensivo e de modo tradicional. Os principais produtos obtidos a partir desta raça, devidamente qualificados, são o Queijo Terrincho DOP e o Borrego Terrincho DOP. A inspeção sanitária é um dos atos médico-veterinários com reconhecida importância para a segurança alimentar, através da qual se verifica a reprovação de carne imprópria para consumo humano no decurso da inspeção post mortem em matadouro. Estas reprovações associadas a alterações patológicas, podem ser favorecidas pela ocorrência de determinados fatores de risco na produção animal condicionando prejuízos económicos para o produtor. Este trabalho teve como objetivos principais o registo das causas de reprovação observadas no decorrer da inspeção sanitária em matadouro de borregos de raça Churra da Terra Quente (CTQ) e o estudo de possíveis fatores de risco na exploração associados à ocorrência das reprovações registadas. Neste estudo, apenas se observou a rejeição das vísceras fígado (35,17%) e pulmão (19,7%). As principais causas de rejeição hepática incluíram as lesões compatíveis com cisticercose hepato-peritoneal (18,22%), o parasitismo inespecífico (13,98%), a distomatose (2,54%) e os abcessos (0,42%). A análise estatística, permitiu constatar que a percentagem de reprovação de fígado por cisticercose hepato-peritoneal era superior em lotes de borregos provenientes de explorações cujo proprietário não tinha formação profissional (p=0,0125) e não procedia à desparasitação dos cães de guarda (pexplorações em que o proprietário e funcionários não usavam roupa e calçado específico (p=0,0006). Os resultados deste estudo evidenciam a importância de fornecer formação profissional adequada aos produtores, nomeadamente em relação à ocorrência de alterações conducentes a reprovações em matadouro para além da influência de outros fatores de risco. O conhecimento destes fatores poderá auxiliar a produção, na medida em que orientam a alteração de práticas de risco, possibilitando assim a diminuição das taxas de reprovações em futuros lotes de animais melhorando a rentabilidade do operador económico

Country
Portugal
Keywords

Fatores de Risco, Inspeção sanitária, Biossegurança, Sanidade, Ovinos

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green