175 documents found, page 1 of 18
Seroprevalence of Mycobacterium avium subsp. paratuberculosis Infections in Sma...
Quintas, Helder; Benavides, Júlio; Jacob-Ferreira, João; Afonso, Paulo; Coelho, Ana CláudiaParatuberculosis, also known as Johne’s disease, is a granulomatous enteritis in both domestic and wild ruminants caused by the bacterium Mycobacterium avium subsp. paratuberculosis. Understanding the prevalence of this disease in small ruminants is essential for disease control and prevention strategies. A systematic review of the literature was conducted using the PubMed, ScienceDirect and Scopus databases to...
Ehrlichia canis and Rickettsia conorii Infections in Shelter Dogs: Seropositivi...
Afonso, Paulo; Lopes, Ana Patrícia; Quintas, Helder; Cardoso, Luís Miguel; Coelho, Ana CláudiaA cross-sectional study was conducted to gain insight into the epidemiology of canine ehrlichiosis and rickettsiosis in northern Portugal. Specific IgG antibodies to Ehrlichia canis were analysed using a commercial enzyme-linked immunosorbent assay (ELISA), and antibodies to Rickettsia conorii were analysed using a commercial indirect immunofluorescence antibody test (IFAT). A total of 113 dogs from two differe...
Whisking away the veil: exploring feline immunodeficiency virus and feline leuk...
Afonso, Paulo; Cardoso, Luís Miguel; Quintas, Helder; Coelho, Ana CláudiaFeline immunodeficiency virus (FIV) and feline leukaemia virus (FeLV) are important pathogens affecting feline hosts worldwide, compromising the health, well-being, quality of life, and lifespan of infected cats. This study explores the prevalence of these viral agents among shelter cats in Portugal, aiming to un-ravel their complexities and implications. The prevalence of FIV and FeLV was assessed by collectin...
Health Sentinels: Canine Parvovirus and Coronavirus in Portuguese Shelter Dogs
Afonso, Paulo; Cardoso, Luís; Quintas, Helder; Coelho, Ana CláudiaThis study investigates the prevalence of Canine Parvovirus (CPV) and Canine Coronavirus (CCoV) among shelter dogs in Portugal. Despite advancements in veterinary medicine and widespread vaccination efforts, CPV and CCoV continue to pose significant health threats to the canine population, particularly in high-density environments such as shelters. Through a cross-sectional study involving 240 shelter dogs in f...
Leishmania seroprevalence in dogs: comparing shelter and domestic communities
Afonso, Paulo; Coelho, Ana Cláudia; Quintas, Helder; Cardoso, Luís MiguelCanine leishmaniosis (CanL) is a chronic, systemic, and often severe disease. The main causative agent of CanL is a protozoan parasite, Leishmania infantum, with phlebotomine sand flies acting as vectors. In Europe and other continents, L. infantum is also responsible for leishmaniosis in other animals, such as cats, horses, and humans. In Portugal, animal and human leishmaniosis is endemic, and high prevalence...
Timed artificial insemination in Serrana nanny-goats: the effects of vaginal sp...
Quintas, Helder; Silva, Daiane; Afonso, Paulo; Álvaro, Armindo; Mateus, Óscar; Valentim, RamiroThe success of artificial insemination (AI) depends on the equipment used, especially regarding the facilitation of artificial insemination technicians’ work and the positioning of insemination guns in the genital tract of animals. This study aimed to evaluate how vaginal specula and artificial insemination technicians affected the fertility rates of timed artificially inseminated Serrana Transmontano goats (wh...
Animal tuberculosis: gross lesions and anatomopathological diagnosis
Quintas, Helder; Prada, Justina; Fontes, Maria da Conceição; Coelho, Ana Cláudia; Pires, IsabelAnimal tuberculosis (TB) is a zoonotic disease with worldwide distribution that can cause serious animal infections with economic and public health concerns. In its turn, human TB is currently one of the leading causes of death in the world due to a curable disease. Although the diagnosis demands microbiological culture confirmation, anatomopathological diagnosis of suggestive lesions often provides a presumpti...
Tuberculosis: integrated studies for a complex disease 2050
Rezaei, Nima; Hosseini, Nastaran-Sadat; Saghazadeh, Amene; Fateh, Abolfazl; Duse, Adriano; Ahmad, Aijaz; Braley, Alexander E.; Tahta, AlicanTuberculosis (TB) has been a disease for centuries with various challenges [1]. Like other places where challenges and opportunities come together, TB challenges were the inspiration for the scientific community to mobilize different groups for the purpose of interest. For example, with the emergence of drug resistance, there has been a huge volume of research on the discovery of new medicines and drug delivery...
Small ruminant lentivirus infection in sheep and goats in north Portugal: serop...
Jacob-Ferreira, João; Coelho, Ana Cláudia; Vila, Ana Grau; Lacasta, Delia; Quintas, HelderSmall ruminant lentiviruses (SRLVs) are transmitted among ovine and caprine species. This disease is a severe problem for small ruminant production, not only for animals’ well-being but also for flocks’ efficiency. The main aim of this research was to quantify the seroprevalence and associated risk factors for SRLV infection in the northern region of Portugal. Samples were collected from a total of 150 flocks, ...
Nutrition disorders in grazing sheep: Intoxications
Quintas, HelderDuring grazing sheep can have access to a wide variety of poisonous plants, mycotoxins, heavy metals and/or biologically active elements responsible for an ample range of deleterious effects and significant economic losses in flocks worldwide, especially those reared in exten- sive o semi-intensive conditions. Sola dosis facit venenum the classic toxicology maxim credited to Paracelsus, illustrates well the fac...