179 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...
Furry hosts and fungal guests: Investigating dermatophyte carriage in shelter a...
Afonso, Paulo; Quintas, Helder; Vieira, Ana Filipa; Pinto, Eduardo; Matos, Manuela; Soares, Ana; Cardoso, Luís Miguel; Coelho, Ana CláudiaDermatophytosis is a widespread fungal infection affecting both animals and humans, commonly known as ringworm. Dermatophytosis results in the breakdown of keratin, leading to skin, hair, and claw lesions, and has an important global prevalence that is often underestimated. While typically self-limiting, dermatophytosis can pose a severe risk due to its contagious nature, particularly in shelters. This study ai...
Body Condition in Small Ruminants—Effects of Nutrition on the Hypothalamic–Pitu...
Chaves, Ana Sofia; Silva, Filipe; Valentim, Ramiro; Quintas, HelderNutritional status plays a vital role in regulating ovary activity. This regulation is mediated by the hypothalamus–pituitary–gonad axis and by effects exerted directly on the ovary. Therefore, to achieve the best reproductive performance, it is essential to know how the nutritional status affects the secretion of GnRH, gonadotrophins, and sex steroid hormones. Adequate body reserves and energy balance are crit...
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 Miguel; 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...
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...
The effect of breed and semen washing on conception rate of Portuguese goat art...
Siqueira, Ana J.A.; Cardoso, Ana; Santos, Liliana; Quintas, Helder; Valentim, Ramiro; Silva, DaianeThe effect of breed and semen washing on conception rate of Portuguese goats artificially inseminated
The effect of eCG dose and storage time of cooled semen on the conception rate ...
Meireles, Samanta A.; Cezário, Mayara O.; Santos, Liliana; Quintas, Helder; Valentim, Ramiro; Silva, DaianeThe effect of eCG dose and storage time of cooled semen on the conception rate of Portuguese Churra Galega Bragançana ewes.
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, ...
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...