Loading...
181 results
Search Results
Now showing 1 - 10 of 181
- Efeitos do grau de lubrificação vaginal, tipo de Os cervical externo, local de deposição do sémen e refluxo cervical sobre a taxa de fertilidade pós-inseminação artificial em ovelhas da raça Churra Galega BragançanaPublication . Mateus, Óscar; Dendena, Marina; Correia, Teresa Montenegro; Maurício, Raimundo; Álvaro, Armindo; Quintas, Helder; Valentim, RamiroEste trabalho teve como objectivo estudar os efeitos de alguns factores vaginais e cervicais – grau de lubrificação vaginal, tipo de Os cervical externo, local de deposição do sémen e ocorrência de refluxo cervical – sobre a taxa de fertilidade pós-IA em ovelhas Churra Galega Bragançanas (CGB).
- Efeitos do tipo de Os externo, viscosidade do muco cervical, local de deposição do sémen e refluxo cervical sobre a taxa de fertilidade pós-inseminação artificial em cabras SerranasPublication . Quintas, Helder; Mateus, Óscar; Francisco, Lucas Felipe; Correia, Teresa Montenegro; Maurício, Raimundo; Álvaro, Armindo; Valentim, RamiroEste trabalho teve como objetivo estudar os efeitos do tipo de Os externo, da viscosidade do muco cervical, do local de deposição do sémen e da ocorrência de refluxo cervical sobre a taxa de fertilidade em cabras Serranas.
- Efeito do método de preservação do sémen e do inseminador sobre a taxa de fertilidade pós-inseminação artificial em cabras da raça SerranaPublication . Quintas, Helder; Mateus, Óscar; Francisco, Lucas Felipe; Correia, Teresa Montenegro; Maurício, Raimundo; Álvaro, Armindo; Valentim, RamiroEste trabalho teve como objetivo estudar os efeitos do método de preservação de sémen (fresco vs. refrigerado) e do inseminador (A vs. B) sobre a taxa de fertilidade de cabras da raça Serrana.
- Efectos de dos diluyentes seminales y de dos métodos de conservación del semen en la tasa de fertilidad post-inseminación artificial en cabras de raza SerranaPublication . Mateus, Óscar; Perez, Valentín; Leão, Ana; Correia, Teresa Montenegro; Maurício, Raimundo; Álvaro, Armindo; Quintas, Helder; Valentim, RamiroEste trabajo tuvo como objetivo estudiar los efectos de la utilización de dos diluyentes seminales (Andromed® y INRA 96®) y de dos métodos de conservación del semen (fresco y refrigerado) sobre la tasa de fertilidad de cabras Serranas sometidas a inseminación artificial (IA).
- Avaliação da eficácia de dois tratamentos hormonais de controlo da atividade ovárica em cabras da raça SerranaPublication . Quintas, Helder; Mateus, Óscar; Francisco, Lucas Felipe; Correia, Teresa Montenegro; Maurício, Raimundo; Álvaro, Armindo; Valentim, RamiroEste trabalho teve como objetivo avaliar a eficácia de dois tratamentos hormonais – FGA + eCG vs. MAP + hCG – no controlo da atividade ovárica de cabras da raça Serrana.
- Efeito da suplementação vitamínica sobre a taxa de fertilidade pós-inseminação artificial em cabras Serranas e Pretas de MontesinhoPublication . Quintas, Helder; Mateus, Óscar; Francisco, Lucas Felipe; Correia, Teresa Montenegro; Maurício, Raimundo; Álvaro, Armindo; Valentim, RamiroEste trabalho teve como objetivo estudar os efeitos da administração de um suplemento multivitamínico sobre a taxa de fertilidade de cabras Serranas e Pretas de Montesinho.
- Leishmania seroprevalence in dogs: comparing shelter and domestic communitiesPublication . 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 levels of infections and disease have been reported in dogs. There is a prejudice against stray animals and also those housed in shelters, assuming they have higher levels of infection with vector-borne pathogens, including L. infantum, when compared to domestic animals. In northeastern Portugal, serum samples were obtained from March to May 2022 in three shelters (n = 179) and thirteen veterinary clinics (n = 164), resulting in 343 dogs being analyzed for antibodies to Leishmania spp. by the direct agglutination test (DAT). The overall seroprevalence was 9.9%, with 15.2% seroprevalence in domestic dogs and 5.0% in the shelter ones (p = 0.003). The fact that shelter dogs had a lower seroprevalence could be explained by more regular veterinary care provided in shelters regarding preventive measures, including insecticides with an antifeeding effect, in comparison with domestic dogs.
- Seroprevalence of Mycobacterium avium subsp. paratuberculosis Infections in Small Ruminants in EuropePublication . 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 identify all articles reporting Mycobacterium avium subsp. paratuberculosis (MAP) seroprevalence in sheep and goats in Europe, published from January 2006 to December 2023. The initial search for existing publications reporting systematic reviews and primary studies was carried out by searching the available databases. For the final selection of studies, an initial screen for basic eligibility and a detailed appraisal of quality were performed. After the study selection, the relevant data was extracted. The detailed appraisal generated 21 publications that reported 55 studies, 22 (40.0%) from sheep (12 at the animal-level and 10 at the flock-level) and 28 (50.9%) from goats (17 at the animal-level and 11 at the flock-level), and 5 (9.1%) from mixed small ruminant species at the animal level. In total, 34 (61.8%) were animal-level studies and 21 (38.2%) were flock-level studies. Population and inclusion criteria were highly variable among studies. Sample sizes ranged from 291 to 15,585 animals. Most studies reported testing adult animals (over 24 months of age). Commercial ELISA kits were used in most studies. The highest prevalence was obtained in sheep (100%) in Türkiye, and the lowest was found also in sheep (0.7%) in Austria. Overall, the results suggest that MAP antibodies have been frequently detected among small ruminants in some countries and there is a need for standardisation of case definitions to improve the accuracy of prevalence estimates. Further research is needed to understand the risk factors associated with MAP infection in small ruminants and to develop effective control and prevention strategies.
- Occurence of canine parvovirus and canine coronavírus in dogs from a portuguese intermunicipal shelterPublication . Afonso, Paulo; Coelho, Ana Cláudia; Cardoso, Luís Miguel; Quintas, HelderTo better understand the occurrence of canine parvovirus and canine coronavirus in dog shelters, an epidemiological study was conducted in an intermunicipal official shelter in Northeast Portugal. MATERIAL AND METHODS: Samples were collected as part of routine plan for control and monitoring of infectious diseases in dogs at the lntermunicipal Official Shelter of Terra Quente Transmontana. This shelter house stray dogs from the five municipalities of Terra Quente Transmontana (Aifandega da Fe, Carrazeda de Ansiaes, Macedo de Cavaleiros, Mirandela and Vila Flor), which has permanent veterinary medical and nursing assistance with daily exams, identification, registration, vaccination, deworming and neutering procedures. Feces were sampled during periodic checks carried out by the veterinarian in charge of the shelter, from October 2018 to May 2021 . A total of 1 09 samples were collected from stray dogs housed at the shelter. A fecal sample was collected individually from each dog during medical routine check-ups. Blood was collected from the cephalic vein. To detect of Canine Parvovirus (CPV) and Canine Coronavirus (CCoV) antigens in feces, a kit based on the immunochromatographic technique (Uranotest® Parvo-Corona, Urano®vet, S.L, Barcelona, Spain) was used in accordance with manufacturer's instructions. This test allows simultaneously qualitative detection of qualitative detection of CPV and CCoV in feces. The Uranotest® Parvo-Corona reported a sensitivity of 1 00% versus hemagglutination and specificity of 99% versus hemagglutination, for CPV, and a sensitivity of 94% versus RT-PCR and a specificity of 97% versus RTPCR, for CCoV RESULTS: A total of 1 09 stray dogs from lntermunicipal Official Shelter were tested during the study period. The sample consisted of 60 females (55.0%) and 49 males (45.0%). The mean age was 2 months (ranging from 25 to 99 days). The overall occurrence of canine parvovirus and canine coronavirus was 17.4% (19/1 09, 95% Cl: 11.5-25.6%) of the dogs tested. The proportion of dogs only positive to CPV was 3.7% (411 09, 95% Cl: 1.4-9.1 %), the proportion of dogs only positive to CCoV was 6.4% (711 09, 95% Cl: 3.2-12. 7%), and to both CPV and CCoV was 7.3% (8/1 09, 95% Cl: 3.7-13.8%), respectively. CONCLUSION: The results indicate that the overall occurrence of CPV and CCoV in stray dogs entering the lntermunicipal Official Shelter was very high and risk factors associated to occurrence need to be analyzed in further studies.
- Guia de interpretação da bula dos medicamentos e biossegurança aviáriaPublication . Quintas, Helder; Mateus, Óscar; Valentim, RamiroO Guia vai orientar o leitor na interpretação da informação que acompanha os medicamentos veterinários, bem como na implementação de medidas conducentes à criação de barreiras para diminuir os riscos de introdução e disse- minação de agentes causadores de doenças nas explorações avícolas.