ESAV - DZERV - Resumos de eventos científicos não indexados à WoS/Scopus
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- Ammonia and carbon dioxide concentrations in dairy-cattle houses of northwest PortugalPublication . Rodrigues, Ana Raquel; Gomes, Ana; Ferreira, Luís; Cabrita, Ana; Trindade, Henrique; Fonseca, António; Pereira, José Luís
- Ammonia and greenhouse gas emissions from a breeding hen building in PortugalPublication . Pereira, José Luís; Ferreira, Sílvia; Conde, André; Ferreira, Pedro; Pinheiro, Victor; Trindade, Henrique
- AMONIAVEPublication . Pereira, José Luís; Marques, Francisco; Garcia, Carla; Vala, Helena
- Assessement of ammonia concentrations from naturallly ventilated dairy cattle buildings of northwest PortugalPublication . Rodrigues, Ana Raquel; Gomes, Ana; Ferreira, Luís; Cabrita, Ana; Trindade, Henrique; Fonseca, António; Pereira, José Luís
- Assessment of ammonia and carbon dioxide concentrations in a breeding hen building under Portuguese winterPublication . Pereira, José; Garcia, Carla; Ferreira, Sílvia; Pinheiro, Victor; Trindade, Henrique; Conde, André; Ferreira, Pedro
- A case of giant cell tumourPublication . Vala, Helena; Andrade, Luís; Nóbrega, Carmen; Santos, Carla; Cruz, Rita; Mega, Cristina; Esteves, Fernando; Gomes, A.; Mesquita, JoãoMalignant fibrous histiocytoma refers to a group of soft tissue tumours that represents a diagnostic challenge which must be based in the predominant cellular type present. The authors describe an unusual case of tumour in which the presence of giant cells was the distinctive feature. A 7 year old Cocker Spaniel male dog was presented with a subcutaneous nodule in the labial commissure, measuring 1.5 cm in diameter. Sample was fixed in 10 % buffered formalin solution, embedded in paraffin wax and 3 μm thick sections were stained for routine histopathological diagnosis with Haematoxylin and Eosin. A standard Streptavidin-Biotin Complex technique for immunohistochemical evaluation was also performed. Macroscopic examination revealed dark brown, slightly lobed tissues, alternating with whitish tissues, both with moderate consistency on the cut surface. Microscopic examination revealed ulceration and necrosis of the epidermis, under which a high cellular population of undifferentiated cells was observed. These cells population exhibited oval, normo or eucromatic nucleus, with notorious nucleolus and moderate cytoplasm that, resembled fusiform fenotype, intermixed with blood vessels and multinucleated giant cells, as well as intense immunoreactivity for vimentin. The authors suggest the diagnosis of malignant fibrous histiocytoma of giant cell subtype, based on the multinucleated giant cells predominance and submit it to the discussion, particularly for histological grade assessment and prognosis, since there is still some discrepancy in the literature.
- Characterisation of gaseous emissions from tunnel ventilated broiler buildings during winter season in PortugalPublication . Pereira, José Luís; Alves, Susana; Trindade, Henrique; Borges, João; Ferreira, Pedro
- Chronic splenic lesions in surviving pigs from outbreaks of gastric disordersPublication . Vala, Helena; Carreira, Patrícia; Esteves, Fernando; Santos, Carla; Cruz, Rita; Mesquita, João R.; Nóbrega, Carmen; Resendes, A.; Ségalez, J.The gastric problems in pigs acquired the new expression as intensive practices currently adoptes. The authors document, using macro and microscopic figures, a case of high mortality rate in a sow breeding stock in an indoor farm, aiming to discuss the best resolution to adopt. A breeding stock with 500 sows and high animal welfare standards, presented outbreaks of sudden death, in 2014 and 2016, that led to nutritional management changes. Several sows were necropsied and samples fixed in 10% neutral-buffered formalin and processed for routine histopathological diagnosis. Macroscopic exam, realized during outbreaks, revealed severe gastric ulcers and/or torsions. During the present year, cases of death, due to different etiologies, were necropsied and also showed splenic atrophy, irregularities and thickening at the capsule level. Microscopic exam revealed hypertrophy of smooth muscle of the capsule and splenic trabeculae, with presence of siderocalcary and hemorrhagic nodules. The authors suggest the diagnosis of postprandial gastric dilatation in animals surviving the outbreaks reported, with severe spleen repercussions that are still observed on the farm.
- Effects of biochar inclusion on in vitro rumen fermentation parametersPublication . Rodrigues, A.; Maia, M.; Cabrita, A.; Oliveira, H.; Bernardo, M.; Fonseca, I.; Trindade, H.; Pereira, José Luís; Fonseca, A.
- Hepatic histopathological lesions in acute controled haemorrhage followed by volume replacement with a crystalloid or colloid solutionPublication . Vala, Helena; Pina, R.; Cruz, R.; Venâncio, C.; Esteves, Fernando; Silva, A.; Mesquita, João; Ortiz, A. L.; Ferreira, D.Introduction: severe hemorrhage remains the major cause of morbidity and mortality in trauma victims or surgical intervened animals, despite of all the advances in the therapeutic approach. The resulting injuries, or even death, are due to the deficit in intravascular volume and subsequent development of hypovolaemic fluid state, leading to poor tissue perfusion and consequent decreased oxygen delivery to the tissues, often with compromise of organ function. Objective: the aim of this work was to evaluate the effect of different intravenous solutions used for volume replacement following acute controlled haemorrhage, one crystalloid (RL) and one colloid (HES130/0.4) in the integrity of the hepatic tissue in a pig animal model. Material and methods: hepatic samples were collected from animals submitted to passive arterial blood bleeding and reperfusion with a crystalloid (RL) (G1) and with a synthetic colloid (HES 130/0.4) (G2). Samples were also collected from animals that were not subjected to acute bleeding nor volume replacement (G3, control group). All procedures were carried out under personal and project licenses approved by the Ethical Committee of the national regulatory office. Samples were collected and fixed in 10% neutral-buffered formalin, for a maximum of 24hours, embedded in paraffin wax and 3µm sections were stained for routine histopathology with haematoxylin and eosin. Results: the histopathological assessment revealed no statistically significant differences between the three groups. However, some lesions were more often expressed in some groups. More severe hepatocellular hydropic degeneration and hepatocellular steatosis was seen in G1, which is the only group in which haemorrhage was observed and within which oedema was not present. Hyperaemia was only observed in G2 and G3. Necrosis was not present in any of the groups. Conclusion: hepatic histopathological lesions following controlled bleeding and intravenous volume replacement with RL or HES130/0.4 were subtle. However, more pronounced hydropic degeneration and hepatocellular steatosis was seen in G1 (RL), which suggests that HES130/04 may be associated with better hepatic perfusion when used for intravenous volume replacement when compared to RL.