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  • ItemAcesso Restrito
    The Views of Engineering Students on Creativity
    2018 - Catarino, Paula Maria Machado Cruz; Nascimento, Maria M.; Morais, Eva Virgínia Araújo; Vasco, Paulo José Martins; Campos, Helena Maria Barros De; Silva, Maria Helena Ribeiro Dos Santos; Payan-Carreira, Rita; João Monteiro, M.
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    Pursuing Alternative Strategies for Healthier Medical Contraception in Dogs
    2016 - Payan-Carreira, Rita; Borges, Paulo; Fontbonne, Alain
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    Use of a video image analysis method to assess composition and cut yields in light lamb carcasses
    2016 - Batista, Ana; Teixeira, Alfredo; Santos, Virgínia; Azevedo, Jorge; Guedes, Cristina; Silva, Severiano
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    Raças autóctones, multifuncionalidade e especialização produtiva
    2016 - Azevedo, Jorge; Vitali, Andrea
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    O Clínico e o Anatomopatologista
    2016-04-01 - Saraiva, Ana Laura; Payan-Carreira, Rita
    O sucesso das relações interpessoais, incluindo a relação entre clínicos e anatomopatologista, passa necessariamente por uma comunicação eficaz. Num momento em que várias Instituições Portuguesas de ensino em Medicina Veterinária passam, ou recentemente passaram, por processos de avaliação, relembra-se que a comunicação eficaz entre profissionais é recomendada como uma day-one skill pela European Association of Establishments for Veterinary Education - EAEVE, enfatizando a importância do tema. Tem havido uma crescente produção científica relacionada com as aptidões de comunicação entre médicos veterinários clínicos e os seus clientes e até na comunicação de potenciais erros médicos; contudo, o mesmo enfoque não é dado à comunicação entre clínicos e anatomopatologistas. A escassa informação trocada entre estes dois interlocutores, a forma como essa informação é vinculada, o desconhecimento de metodologias aplicadas em cada especialidade e a linguagem própria utilizada por cada um dos profissionais, são alguns dos motivos apontados para uma comunicação ineficaz. Perante os factos e a experiência dos autores, acreditamos que urge preparar os futuros veterinários (clínicos e patologistas) para um aperfeiçoamento da arte de comunicar eficazmente, desde os auditórios da faculdade, até às clínicas e laboratórios. “É impossível não comunicar”; porém, a comunicação eficaz aprende-se e treina-se. Constituíram objetivos deste trabalho: (1) elaborar uma revisão sumária sobre a temática da comunicação; (2) comentar o processo de comunicação entre clínicos e anatomopatologistas veterinários.
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    Descrição anatomopatológica em medicina veterinária
    2016-04-01 - Payan-Carreira, Rita; Pires, Maria dos Anjos
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    Procedimentos para Análise Histopatológica do Aparelho Genital Feminino
    2016-04-01 - Pires, Maria dos Anjos
    O aparelho genital feminino integra várias estruturas ou órgãos de função complexa, que desempenham um importante papel no organismo. O seu correto funcionamento determina a fertilidade da fêmea. Na maior parte das ocorrências incidindo sobre este aparelho, os órgãos que o constituem são enviados para análise histopatológica pela existência ou suspeita de patologia, na forma de peça cirúrgica, fragmento excisado ou como citologia. No entanto, podem também chegar ao laboratório de histopatologia, pedidos de avaliação de biópsias ou citologias de casos de aparente “normalidade” para despiste de eventuais processos mórbidos que, apesar de não evidentes ao exame clínico, poderão justificar uma situação de infertilidade. Qualquer que seja a forma como chega o material a analisar, será necessário ter em consideração, para além da morfologia, também a espécie e as suas características assim como a fase do seu ciclo reprodutivo, já que o trato genital responde à dinâmica das hormonas sexuais propria da espécie. No caso de o material em análise ser constituído por um fragmento do trato genital obtido por cirurgia, é necessário procurar a correta orientação da peça, a toma de medidas e uma descrição adequada das lesões encontradas, fundamentais para o correto diagnóstico das afeções com sede neste aparelho. Pelo facto de ser constituído por várias porções anatómicas, todas elas devem ser sujeitas a avaliação macro e microscópica cuidada. O presente trabalho procura fazer a apresentação de uma metodologia a utilizar na rotina de avaliação deste material, propondo uma sistematização dos procedimentos de descrição, corte e avaliação de todos os órgãos que integram o aparelho genital feminino.
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    Ovarian cysts in dogs' practice
    2016 - Payan-Carreira, Rita; Pires, M. A.
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    New Approaches for Hormonal Contraception in Female Cats
    2015 - Borges, Paulo; Fontbonne, Alain; Payan-Carreira, Rita
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    Alterações detetadas na inspeção do aparelho urinário e reprodutor de Suínos
    2014-01-14 - Esteves, Alexandra; Payan-Carreira, Rita; Saraiva, Cristina; Fontes, Maria da Conceição; Vieira-Pinto, Madalena; Martins, Conceição
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    Subcellular distribution of Heat Shock Protein 70 (HSP70) in frozen and chilled Semen is related with dog sperm quality
    2014 - Borges, Paulo; Mir, Fernando; Fontbonne, Alain; Payan-Carreira, Rita
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    Introdução à fisiologia e fisiologia das aves.
    2008 - Pinheiro, Victor
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    Feline endometrial adenocarcinomas
    2012 - Saraiva, Ana Laura; Payan-Carreira, Rita; Gärtner, Fátima; Pires, Maria dos Anjos
    Endometrial adenocarcinomas are considered to be rare in domestic animals, in particular comparing to non-epithelial tumours of the uterus such as leiomyoma, in part because they are likely underdiagnosed. In cats, though uterus was the most common site for genital tract tumours, endometrial adenocarcinomas were found to be rare in all available references. In the study presented herein, forty feline primary endometrial adenocarcinomas, identified by a minimum of three pathologists on conventional haematoxylin and eosinstained sections, obtained from the archives of four different laboratories, for a period of 13 years were used in a retrospective study on the subject. In previous studies on feline endometrial adenocarcinomas (FEA) it has been found an increase incidence in purebred animals, which has been associated with a longer reproductive activity in those animals in comparison with domestic cats. However, this should be read with caution, as population ratios between purebred and domestic mongrel animals may change with the geographic location. Also the cultural adoption of gonadectomy as a contraceptive measure may interfere with the regional prevalence of the disease. In fact, in Portugal the number of intact domestic cats is higher than the purebreds, due to the tendency for late spaying age (most of them due to uterine or mammary diseases), which could influence the incidence of FEA in our country. Some of the specimens used in this study were obtained at ovariohysterectomy following a clinical diagnosis of pyometra. Unless metastasic disease exists, to which illness is often associated, most frequent signs for FEA are vague and unspecific, making difficult the early diagnosis of endometrial carcinoma. The histological evaluation shows the existence of different tumour phenotypes, where clear cell are often found. The presence of nuclear atypia and the Ki67 expression seem not to be related to the malignancy of the tumour. Furthermore, one report refers the presence of oestrogen receptors, which could explain the low levels of metastization or invasiveness proposed for FEA, or the clinical outcome for the tumour. For most situations of primary FEA, in particular in early stages of the disease, myometrial invasion is limited and often absent. Also vascular invasion is seldom observed even in tumours with moderate nuclear atypia. However, limited information exists on specimens from early FEA stages, which impair the presentation of a reliable prognosis for that animal. The major challenge seems to be the identification of valuable prognostic markers to achieve a definitive prognosis for animal life. Feline endometrial adenocarcinomas are possibly more common than we might presume and the clinical impact of such tumours may be increasing with the increase in the ability to establish an early diagnosis allied to an extended duration of life in cats. A recent report defends that FEA are more common than smooth muscle tumours of the uterus. Furthermore, as it frequently co-exists with pyometra or mucometra, it is also possible that a large number of cases fail to reach the pathological evaluation and hence remain undiagnosed. In this chapter we propose to discuss the clinical and morphological data of all the forty feline primary endometrial adenocarcinomas, supported by an extended review of the literature.
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    O comportamento do gando porcino
    2011 - Moreno Grande, A.; Correa, J.A.; Payan Carreira, R.; Velásquez Pereira, J.
    Ao longo deste texto imos realizar un breve repaso por algúns dos máis importantes modelos de comportamento que segue o gando porcino tanto dende o punto de vista individual coma colectivo. Como antecedente a calquera comentario sobre o comportamento do gando porcino, débese ter presente a súa orixe salvaxe, xa que a súa domesticación se sitúa hai aproximadamente 10000 anos, case paralelamente ao inicio do proceso de domesticación do bovino. Desta forma e de xeito independente en Europa e Asia empézase a manter na casa ou no seu contorno os porcos. As formas domésticas actuais tiveron orixe en cruzamentos entre o porco salvaxe asiático (Seus vittatus) e o porco salvaxe europeo, o xabaril (Seus scrofa).
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    Freemartinism in Cattle
    2012 - Esteves, Alexandra; Båge, Renee; Payan-Carreira, Rita
    Freemartinism is one of the most commonly found intersex conditions in cattle, although it may also occur in small ruminants. The freemartin phenotype appears in a dizygotic twin pregnancy where one twin is a male and the other is a female. Due to precocious anastomoses between the placental vascular systems of the two fetuses, masculinising molecules reach the female twin and disrupt the normal sexual differentiation, whilst in the male the effects of this association are usually minimal. In cattle, this condition is observed in 90 to 97% of twin pregnancies. A freemartin is, by definition, a genetically female fetus masculinised in the presence of a male co-twin, giving rise to a sterile heifer. Genital tract defects with varying severity can be observed in freemartin animals, which often present suppression and disorganization of the ovary, originating a rudimentary or a testis-like gonad depleted of germ cells. The uterine horns may be hypoplastic or instead may be reduced to a cord-like structure suspended in the broad ligament. Anatomic continuity between the uterus and the vagina is frequently absent, and the existence of rudimentary vesicular glands is typical. The external genitalia commonly presents enlarged clitoris, small vulva and a prominent, male-like tuft of hair. As a rule, heifers born twin to a bull have to be considered sterile and should be identified as early as possible to cull them from replacement stock. Despite its limitations, freemartinism is currently diagnosed by physical examination, as karyotyping or blood typing is often considered an unnecessary expense. In cattle, twinning trend has a genetic background that has been associated to hormonal regulation in favor of double ovulations. However, the genetic determinant on the basis of twinning seems to have small importance when compared to environmental or managementassociated factors, particularly in dairy cows. In fact, in dairy animals, in particular in high milk producing cows, it has long been proven the increase of twin calvings due to the hormonal and metabolic disturbances in the energy balance early in the post-partum period.With increased incidence of twin births in cow it is reasonably expectable a small increase in the occurrence of freemartins at the farm levels. In this paper it is the intent to describe the gross and histopathological findings of freemartinism in cattle, using data gathered from a study at an abattoir (17 cases) and from 3 cases diagnosed in living animals, supported by a review of the pathophysiology of the process, and to discuss the available methods for identification of freemartin animals at farm level.
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    Relationship between ultrasound subcutaneous fat depth, body condition score and body subcutaneous fat distribution in Miranda breed jennets
    2012 - Quaresma, Miguel; Payan-Carreira, Rita; Rochas e Silva, Severiano
    In Northeast Portugal donkeys usually face seasonal food shortage and often their basic requirements are not properly met. Body condition score (BCS) may be used to assess a donkey’s welfare and nutritional status, but the procedure is highly subjective. For several domestic species the relationships between the ultrasound subcutaneous fat depth, the body condition score and the body subcutaneous fat distribution have already been establish. Interspecies differences on the most relevant site for ultrasound collection of data have been demonstrated, in particular between equids and ruminants, which are related with anatomic features. In donkeys no available information exists on the relationship between ultrasonographic fat amount and its pattern of deposition and the BCS, and a preliminary study was developed using 16 adult jennets of the Asinina de Miranda breed, in a total of 33 examinations for BCS and real time ultrasound (RTU). RTU images were acquired to determine the subcutaneous fat depth (SF), measured at the neck; loin; rump and tail-head, and tissue depth (TD) measured at ribs. SF distribution was analysed and the correlations between BCS and RTU measurements were assessed. The largest variations in SF deposition were found along the thoracolumbar axis, though RTU measurements parallel better the BCS variations when taken at the other sites, in particular those taken over the ribs. Significant correlations were found between BCS and RTU measurements (SF and TD) for all sites except for the neck. Our results suggest that RTU is a potentially valuable tool to monitor body condition and body subcutaneous fat distribution in jennets, with the advantage of being a non-invasive, accurate and easily implemented technique.