8 documents found, page 1 of 1
When the solution becomes the problem: a review on antimicrobial resistance in ...
Pires, Ana José; Pereira, Gonçalo; Fangueiro, David; Bexiga, Ricardo; Oliveira, ManuelaAntibiotics' action, once a ‘magic bullet’, is now hindered by widespread microbial resistance, creating a global antimicrobial resistance (AMR) crisis. A primary driver of AMR is the selective pressure from antimicrobial use. Between 2000 and 2015, antibiotic consumption increased by 65%, reaching 34.8 billion tons, 73% of which was used in animals. In the dairy cattle sector, antibiotics are crucial for treat...
When the solution becomes the problem: a review on antimicrobial resistance in ...
Pires, Ana José; Pereira, Gonçalo; Fangueiro, David; Bexiga, Ricardo; Oliveira, ManuelaAntibiotics' action, once a ‘magic bullet’, is now hindered by widespread microbial resistance, creating a global antimicrobial resistance (AMR) crisis. A primary driver of AMR is the selective pressure from antimicrobial use. Between 2000 and 2015, antibiotic consumption increased by 65%, reaching 34.8 billion tons, 73% of which was used in animals. In the dairy cattle sector, antibiotics are crucial for treat...
Biochar supplementation affects the microbiome of recycled manure solids for co...
Guerreiro, Joana F.; Pires, Ana J.; Nunes, Mónica; Esteves, Ana; Chambel, Lélia; Pascoal, Pedro; Pereira, Marcelo; Fangueiro, David; Tavares, LuísThe widespread use of Recycled Manure Solids (RMS) as cow bedding material is not without risks, since cattle manure may act as a vehicle for pathogenic and antimicrobial resistant bacteria dissemination. Thus, our aim was to evaluate RMS-supplemented with a pine biochar produced in Portugal as a new cow bedding material, since the use of biochar has been shown to have the potential to mitigate the impact of re...
Bimodal milk flow and overmilking in dairy cattle : risk factors and consequences
Fernandes, S.; Pereira, G.; Bexiga, RicardoTo maximise the return on capital invested in the milking parlour, the largest number of cows should be milked gently and completely in the shortest possible time. Bimodal milk flow and overmilking negatively influence the efficiency of the milk removal process and teat health. This observational study had the objective of investigating the prevalence of bimodal milk flow and overmilking, determining which indi...
Lentivírus dos pequenos ruminantes
Valentim, Martins; Jacob-Ferreira, João; Valentim, Ramiro; Bexiga, Ricardo; Quintas, HelderOs Lentivirus dos pequenos ruminantes são reconhecidos em todo o mundo há décadas, sendo esta designação atualmente utilizada para designar o que classicamente era conhecido por Maedi-Visna ovino e Artrite-Encefalite caprina. Causam doenças de evolução lenta, multissistémica, progressiva e debilitante nestas espécies. Originalmente, pensava-se que estes vírus eram específicos de cada espécie, porém devido à pro...
Impact of endemic Besnoitiosis on the performance of a dairy cattle herd
Anastácio, Catarina; Bexiga, Ricardo; Nolasco, Sofia; Zúquete, Sara; Delgado, Inês L. S.; Nunes, Telmo; Leitão, AlexandreThis study aimed to assess the effect of Besnoitia besnoiti infection on the reproductive and productive performance of a dairy cattle herd. A serological screening was performed by indirect fluorescent antibody test (IFAT) on every animal aged over one year (n = 262). Subsequently, 211 animals were clinically examined, with 96 of those being screened for detection of sclerocysts. The overall seroprevalence was...
Biosensors for On-Farm Diagnosis of Mastitis
Martins, Sofia A. M.; Martins, Verónica C.; Cardoso, Filipe A.; Germano, José; Rodrigues, Mónica; Duarte, Carla; Bexiga, Ricardo; Cardoso, SusanaBovine mastitis is an inflammation of the mammary gland caused by a multitude of pathogens with devastating consequences for the dairy industry. Global annual losses are estimated to be around €30 bn and are caused by significant milk losses, poor milk quality, culling of chronically infected animals, and occasional deaths. Moreover, mastitis management routinely implies the administration of antibiotics to tre...
The future of veterinarians in dairy herd health management
Silva, João António Martins Cannas da; Bexiga, Ricardo; Gelfert, C. C.; Baumgartner, W.The future of the Veterinary Practice in Dairy Health Management has changed and will change more drastically from our point of view in the next years. The consumer’s pressure and the Media are more and more concerned about animal welfare, traceability of animal products and safety of products of animal origin. On the other hand the Farmers in Europe have to produce under strong rules (competing with other coun...