Prevalência do herpes vírus bovino tipo I em duas explorações no concelho de Serpa
Miniatura indisponível
Data
2019
Título da revista
ISSN da revista
Título do Volume
Editora
Resumo
Em todos os sistemas de produção de gado o aparecimento de certas doenças pode ser corretamente antecipado e controlado, se forem introduzidas medidas preventivas e curativas. A Rinotraqueíte Infeciosa Bovina é uma doença infeciosa causada pelo vírus BoHV-1 conhecida pelo seu grande impacto económico negativo nas explorações. Este estudo, baseado na norma regional de controlo voluntário de IBR/BVD, Bovicare, teve como objetivo determinar a prevalência de BoHV-1 em bovinos em sistema extensivo, de duas explorações no concelho de Serpa através da pesquisa de anticorpos anti-gB e anti-gE.
Foram analisadas 64 amostras de bovinos das duas explorações que correspondem a 49 fêmeas e 5 machos da exploração A e a 10 fêmeas da exploração B. As amostras de sangue foram analisadas por método ELISA para pesquisa de anticorpos anti-gB e anti-gE (machos) devido à possibilidade de estes terem sido vacinados com vacinas marcadas. Os resultados revelaram a existência de 4 novilhas positivas a anticorpos anti-gB na exploração A, na primeira colheita, e uma prevalência de 12,82% (5/39) nas fêmeas na segunda colheita. Os cinco machos revelaram serem todos seropositivos. Na exploração B nenhum dos animais revelou ser positivo.
Esta positividade pode ser explicada pelas possíveis falhas na biossegurança, recomendando à exploração o seguimento do protocolo e programa Bovicare.
In all systems of livestock production the appearance of certain diseases can be correctly anticipated and controlled, if preventive and curative measures are introduced. The Infectious Bovine Rhinotracheitis is an infectious disease caused by the virus BoHV-1 known by your great negative economic impact on farms. This study, based on the national protocol of voluntary control of BVD and IBR, called Bovicare, aimed to determine the prevalence of BoHV-1 in bovine animals in extensive system, in two farms in Serpa, through the presence of antibodies anti-gB and anti-gE. 64 cattle samples were analyzed from the two farms, 49 females and 5 males from the farm A and the 10 females farm B. The blood samples were analyzed by ELISA for antibodies research anti-gB and anti-gE (in males) because of the possibility they have been vaccinated with marker vaccines. The results revealed the existence of 4 heifers positive anti-gB antibodies at the farm A, in the first harvest, and a prevalence of 12.82% (5/39) in females in the second harvest. The five males revealed all seropositive. On the farm B none of the animals proved to be positive. This positivity can be explained by the possible failures in biosecurity, recommending the follow-up protocol and program Bovicare.
In all systems of livestock production the appearance of certain diseases can be correctly anticipated and controlled, if preventive and curative measures are introduced. The Infectious Bovine Rhinotracheitis is an infectious disease caused by the virus BoHV-1 known by your great negative economic impact on farms. This study, based on the national protocol of voluntary control of BVD and IBR, called Bovicare, aimed to determine the prevalence of BoHV-1 in bovine animals in extensive system, in two farms in Serpa, through the presence of antibodies anti-gB and anti-gE. 64 cattle samples were analyzed from the two farms, 49 females and 5 males from the farm A and the 10 females farm B. The blood samples were analyzed by ELISA for antibodies research anti-gB and anti-gE (in males) because of the possibility they have been vaccinated with marker vaccines. The results revealed the existence of 4 heifers positive anti-gB antibodies at the farm A, in the first harvest, and a prevalence of 12.82% (5/39) in females in the second harvest. The five males revealed all seropositive. On the farm B none of the animals proved to be positive. This positivity can be explained by the possible failures in biosecurity, recommending the follow-up protocol and program Bovicare.
Descrição
Orientação: Sofia Varela Van Harten
Palavras-chave
MESTRADO INTEGRADO EM MEDICINA VETERINÁRIA, VETERINÁRIA, MEDICINA VETERINÁRIA, HERPESVÍRUS, BIOSSEGURANÇA, BOVÍDEOS, DOENÇAS INFECIOSAS, VETERINARY MEDICINE, HERPESVIRUSES, BIOSECURITY, BOVIDS, INFECTIOUS DISEASES, RINOTRAQUEÍTE INFECIOSA BOVINA, INFECTIOUS BOVINE RHINOTRACHEITIS