23 research outputs found

    Performance, Carcass Characteristics and Meat Quality of Grazing Lambs Finished on Tropical Grasses

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    Brazil is a country of continental size, and more than seven million ha are occupied with tropical pasture. Worldwide animal production from tropical pastures is also very significant where Cynodon, Panicum and Paspalum are important genus. These grasses are widely used in the production of cattle, and are growing in importance for sheep production, but their potential for producing quality lamb is not fully known. The objective of this study was to evaluate the potential of two tropical grasses for finishing lambs in autumn to reduce the seasonality of production of lamb for meat

    Raiva em equino no município de Porto Alegre - RS, Brasil

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    Background:  :  :  : rabies is a fatal zoonosis caused by a highly neurotropic RNA virus which causes neurological signs and that is distributed almost worldwide. Rabies affects domestic and wild animals and this is a disease transmitted by their bites, through which the virus present in the saliva is inoculated. In Brazil, Desmodus rotundus is the main hematophagous bat species that transmits rabies, especially to herbivores e equines. In equines, the clinical manifestation varies a lot, including both the paralytic and the furious form of the disease. The goal of this study is to describe a case of equine rabies in the city of Porto Alegre, Rio Grande do Sul, Brazil. Case: a six-year old male American Quarter Horse, which presented a clinical picture characterized by colic, depraved appetite and difficulty to move, was admitted to the Hospital de Clínicas Veterinárias of Universidade Federal do Rio Grande do Sul (HCV-UFRGS). The horse did not respond to treatment, therefore, it was submitted to exploratory laparotomy, when the moderate intestinal constipation and low intestinal motility was observed. A large colon enterotomy was performed and the intestinal contents were partially emptied. During recovery from anesthesia, the animal remained in lateral decubitus, not making any attempt to stand up. The animal did not show a favorable clinical evolution a few hours later, displaying weakness particularly in the hind limbs. Consequently, the animal underwent euthanasia. Samples of body organs were collected and fixed in formol 10%, processed routinely for histological purposes and then stained by hematoxylin and eosin. The histopathological examination revealed nonsuppurative meningoencephalitis in the central nervous system, without the presence of Negri bodies. Due to the history of recent rabies cases in neighbor areas of the property from where the animal came, direct immunofluorescence (IFD) and immunohistochemical (IHQ) exams for rabies were requested. The result was negative in IFD and a positive immunolabeling was observed in IHQ, thus demonstrating a viral antigen labeling in neurons of the cervical spine, pons, mesencephalon and cerebellum. Discussion: intracytoplasmic inclusions, also known as Negri bodies, are important and pathognomonic findings that were not observed in this case. Its presence and concentration depend on the stage and course of the disease, and they are not present in up to 30% of rabies cases, because certain virus strains do not produce Negri bodies. In equines, the occurrence of Negri bodies is less frequent than in bovines. IFD is the most adequate rabies diagnosis method, which is a highly sensitive technique (80-100%). The result was negative for this case, being confirmed only by IHQ. The immunohistochemical test is an important laboratorial diagnosis tool of rabies, because it allows the solution of unspecific meningoencephalitis cases when Negri bodies are not present. The treatment of animals with rabies is not considered. Vaccination in endemic regions or in areas where a rabies case has occurred is necessary. Rabies cases near the property where the animal lived were reported, but a prophylactic vaccination was not carried out. Rio Grande do Sul had a peculiar epidemiological status regarding rabies, as urban rabies cases had not been reported for approximately 17 years. However, rabies transmitted by hematophagous bats is still endemic in rural areas. This case demonstrates the importance of maintaining a rabies vaccination schedule in equine properties

    Omentopexia pelo flanco direito como técnica cirúrgica para correção de deslocamento de abomaso à esquerda

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    O deslocamento de abomaso (DA) é uma enfermidade de origem metabólica, e que possui inúmeros fatores predisponentes, tais como manejo, sanidade, nutrição, entre outros. Essa doença causa significativas perdas econômicas, seja pela queda na produção de leite, seja pelo custo oneroso de seu tratamento. O DA pode ocorrer tanto para a direita (DAD), como para a esquerda (DAE), sendo o último muito mais freqüente, alcançando proporções de 8:1 em relação ao DAD. Os bovinos mais comumente afetados são vacas de alta produção, alimentadas com altas quantidades de grãos, periparturientes, nas quais a atonia abomasal é um pré-requisito para a formação e acúmulo de gás e líquido no interior do órgão, com posterior deslocamento. Este trabalho apresenta uma revisão bibliográfica sobre o DA e os procedimentos utilizados para o seu reposicionamento, em especial a omentopexia pelo flanco direito. Os métodos de correção são classificados em não-cirúrgicos ou conservativos e cirúrgicos. Os procedimentos cirúrgicos são os tratamentos de eleição, pois apresentam taxas superiores de recuperação em relação aos conservativos que apresentam maiores índices de recorrência. Neste trabalho são apresentados os resultados obtidos em 25 procedimentos de omentopexia pelo flanco direito. Essas cirurgias foram acompanhadas em uma fazenda de gado leiteiro, criação intensiva “free stall”, no município de Vacaria – Rio Grande do Sul, no período de 4 de janeiro a 16 de abril de 2010.The displaced abomasum (DA) is a disease of metabolic origin and has many predisposing factors such as handling, health, nutrition, among others. This disease causes significant economic losses, either by the drop in milk production, or for the cost of their treatment. The DA can occur both to the right (RDA) and left (LDA), the last being much more frequent, reaching proportions of 8:1 compared to RDA. The animals most commonly affected are high producing cows fed with large amounts of grain, next to deliver, in which abomasal atony is a prerequisite for the formation and accumulation of gas and fluid within the organ, resulting in displacement. This paper presents a literature review on the DA and the procedures used for its repositioning, especially omentopexy by the right flank. The correction methods are classified into non-surgical and surgical or conservative. Surgical procedures are the treatments of choice, since they have higher rates of recovery in relation to conservative that shows higher rates of recurrence. This paper presents the results obtained in 25 procedures of omentopexy by the right flank. These procedures were followed at a dairy farm, intensive farming "free stall”, in the town of Vacaria - Rio Grande do Sul, from January 4th to April 16th, 2010

    Omentopexia pelo flanco direito como técnica cirúrgica para correção de deslocamento de abomaso à esquerda

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    O deslocamento de abomaso (DA) é uma enfermidade de origem metabólica, e que possui inúmeros fatores predisponentes, tais como manejo, sanidade, nutrição, entre outros. Essa doença causa significativas perdas econômicas, seja pela queda na produção de leite, seja pelo custo oneroso de seu tratamento. O DA pode ocorrer tanto para a direita (DAD), como para a esquerda (DAE), sendo o último muito mais freqüente, alcançando proporções de 8:1 em relação ao DAD. Os bovinos mais comumente afetados são vacas de alta produção, alimentadas com altas quantidades de grãos, periparturientes, nas quais a atonia abomasal é um pré-requisito para a formação e acúmulo de gás e líquido no interior do órgão, com posterior deslocamento. Este trabalho apresenta uma revisão bibliográfica sobre o DA e os procedimentos utilizados para o seu reposicionamento, em especial a omentopexia pelo flanco direito. Os métodos de correção são classificados em não-cirúrgicos ou conservativos e cirúrgicos. Os procedimentos cirúrgicos são os tratamentos de eleição, pois apresentam taxas superiores de recuperação em relação aos conservativos que apresentam maiores índices de recorrência. Neste trabalho são apresentados os resultados obtidos em 25 procedimentos de omentopexia pelo flanco direito. Essas cirurgias foram acompanhadas em uma fazenda de gado leiteiro, criação intensiva “free stall”, no município de Vacaria – Rio Grande do Sul, no período de 4 de janeiro a 16 de abril de 2010.The displaced abomasum (DA) is a disease of metabolic origin and has many predisposing factors such as handling, health, nutrition, among others. This disease causes significant economic losses, either by the drop in milk production, or for the cost of their treatment. The DA can occur both to the right (RDA) and left (LDA), the last being much more frequent, reaching proportions of 8:1 compared to RDA. The animals most commonly affected are high producing cows fed with large amounts of grain, next to deliver, in which abomasal atony is a prerequisite for the formation and accumulation of gas and fluid within the organ, resulting in displacement. This paper presents a literature review on the DA and the procedures used for its repositioning, especially omentopexy by the right flank. The correction methods are classified into non-surgical and surgical or conservative. Surgical procedures are the treatments of choice, since they have higher rates of recovery in relation to conservative that shows higher rates of recurrence. This paper presents the results obtained in 25 procedures of omentopexy by the right flank. These procedures were followed at a dairy farm, intensive farming "free stall”, in the town of Vacaria - Rio Grande do Sul, from January 4th to April 16th, 2010

    Performance, carcass characteristics and meat quality of lambs corriedale and texel finished in tropical grasses

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    Objetivou-se avaliar o potencial de gramíneas tropicais com distintos hábitos de crescimento para terminação de cordeiros para abate no outono. Para tal foram testadas três gramíneas tropicais: 1- Brachiaria brizantha cv. Marandu, 2 - Cynodon spp. cv Tifton-85 e 3 - Capim Aruana (Panicum maximum cv. IZ-5). Foi utilizado um delineamento experimental de blocos inteiramente ao acaso com parcelas subdivididas com três repetições. A parcela principal foi composta pelas três diferentes gramíneas tropicais. A subparcela foi composta por duas raças (Corriedale e Texel) com aptidões produtivas distintas. Durante 84 dias, 45 cordeiros foram mantidos em pastejo contínuo em piquetes com área de 0,2 hectares, com oferta de forragem disponível de 10% de lâmina foliar. Foram realizadas avaliações “in vivo”, ganho médio diário em peso (GMD), taxa de aumento da área de olho de lombo (TXAOL) e taxa de acúmulo de gordura subcutânea (TXEGS) em intervalos regulares de 21 dias. Ao final do período experimental, um total de 29 animais foi encaminhado para abate para avaliação de características quali-quantitativas de carcaça e qualidade da carne. O tratamento com B. brizantha cv. Marandu foi suspenso devido a casos de fotossensibilização. Não houve diferença para as variáveis GMD e TXEGS entre os tratamentos e entre raças ao final do período experimental (p>0,05). A TXAOL da raça Texel foi superior a raça Corriedale (p0,05), a TXAOL e TXEGS apresentou diferença quando comparados os períodos avaliados (p0,05), a TXAOL e TXEGS apresentou diferença quando comparados os períodos avaliados (p0,05), porém houve diferença entre as raças estudadas (p0,05) no perfil entre as raças Corriedale e Texel. Na relação de ácidos graxos ômega-6:ômega-3 não foi encontrada diferença (p>0,05) entre as pastagens e nem entre as raças estudadas. Pelos resultados obtidos através das avaliações de desempenho, características de carcaça e qualidade de carne, as gramíneas tropicais capim Aruana e Tifton-85 apresentaram potencial semelhante para a terminação de cordeiros para abate no outono.This study aimed to evaluate the potential of tropical grasses with different growth habits for finishing lambs for slaughter in the fall. To this end we evaluated three tropical grasses: 1 - Brachiaria brizantha cv. Marandu, 2 - Cynodon spp. Cv. Tifton-85 and 3 - Aruana grass (Panicum maximum cv. IZ-5). The experimental design used was a randomized block design with split plot design with three replications. The main plot was composed of three different tropical grasses. The subplot consisted of two breeds (Texel and Corriedale) with different productive skills. During 84 days, 45 lambs were kept under continuous grazing in paddocks with an area of 0.2 hectares, with forage supply available 10% of the leaf blade. Evaluations were made "in vivo", average daily gain in weight (ADG), rate of increase in loin eye area (RILEA) and rate of accumulation of subcutaneous fat (RASF) at regular intervals of 21 days. At the end of the trial period, a total of 29 animals were slaughtered for evaluation of qualitative and quantitative characteristics of carcass and meat quality. Treatment with B. brizantha cv. Marandu was suspended due to cases of photosensitization. There was no difference for the ADG and RASF variables between treatments and between races at the end of the experimental period (p>0.05). The RILEA Texel was over Corriedale (p0.05), RILEA and RASF showed a difference between the evaluation period (p0.05), but there was difference between the two breeds (p0.05) in the profile between the Texel and Corriedale breeds. In relation to omega-6:omega-3 no difference was found (p>0.05) between pastures or difference between the two breeds. The results obtained through performance evaluations, carcass characteristics and meat quality, tropical grasses grass Aruana and Tifton-85 had a similar potential for finishing lambs for slaughter in the fall

    Performance, carcass characteristics and meat quality of lambs corriedale and texel finished in tropical grasses

    No full text
    Objetivou-se avaliar o potencial de gramíneas tropicais com distintos hábitos de crescimento para terminação de cordeiros para abate no outono. Para tal foram testadas três gramíneas tropicais: 1- Brachiaria brizantha cv. Marandu, 2 - Cynodon spp. cv Tifton-85 e 3 - Capim Aruana (Panicum maximum cv. IZ-5). Foi utilizado um delineamento experimental de blocos inteiramente ao acaso com parcelas subdivididas com três repetições. A parcela principal foi composta pelas três diferentes gramíneas tropicais. A subparcela foi composta por duas raças (Corriedale e Texel) com aptidões produtivas distintas. Durante 84 dias, 45 cordeiros foram mantidos em pastejo contínuo em piquetes com área de 0,2 hectares, com oferta de forragem disponível de 10% de lâmina foliar. Foram realizadas avaliações “in vivo”, ganho médio diário em peso (GMD), taxa de aumento da área de olho de lombo (TXAOL) e taxa de acúmulo de gordura subcutânea (TXEGS) em intervalos regulares de 21 dias. Ao final do período experimental, um total de 29 animais foi encaminhado para abate para avaliação de características quali-quantitativas de carcaça e qualidade da carne. O tratamento com B. brizantha cv. Marandu foi suspenso devido a casos de fotossensibilização. Não houve diferença para as variáveis GMD e TXEGS entre os tratamentos e entre raças ao final do período experimental (p>0,05). A TXAOL da raça Texel foi superior a raça Corriedale (p0,05), a TXAOL e TXEGS apresentou diferença quando comparados os períodos avaliados (p0,05), a TXAOL e TXEGS apresentou diferença quando comparados os períodos avaliados (p0,05), porém houve diferença entre as raças estudadas (p0,05) no perfil entre as raças Corriedale e Texel. Na relação de ácidos graxos ômega-6:ômega-3 não foi encontrada diferença (p>0,05) entre as pastagens e nem entre as raças estudadas. Pelos resultados obtidos através das avaliações de desempenho, características de carcaça e qualidade de carne, as gramíneas tropicais capim Aruana e Tifton-85 apresentaram potencial semelhante para a terminação de cordeiros para abate no outono.This study aimed to evaluate the potential of tropical grasses with different growth habits for finishing lambs for slaughter in the fall. To this end we evaluated three tropical grasses: 1 - Brachiaria brizantha cv. Marandu, 2 - Cynodon spp. Cv. Tifton-85 and 3 - Aruana grass (Panicum maximum cv. IZ-5). The experimental design used was a randomized block design with split plot design with three replications. The main plot was composed of three different tropical grasses. The subplot consisted of two breeds (Texel and Corriedale) with different productive skills. During 84 days, 45 lambs were kept under continuous grazing in paddocks with an area of 0.2 hectares, with forage supply available 10% of the leaf blade. Evaluations were made "in vivo", average daily gain in weight (ADG), rate of increase in loin eye area (RILEA) and rate of accumulation of subcutaneous fat (RASF) at regular intervals of 21 days. At the end of the trial period, a total of 29 animals were slaughtered for evaluation of qualitative and quantitative characteristics of carcass and meat quality. Treatment with B. brizantha cv. Marandu was suspended due to cases of photosensitization. There was no difference for the ADG and RASF variables between treatments and between races at the end of the experimental period (p>0.05). The RILEA Texel was over Corriedale (p0.05), RILEA and RASF showed a difference between the evaluation period (p0.05), but there was difference between the two breeds (p0.05) in the profile between the Texel and Corriedale breeds. In relation to omega-6:omega-3 no difference was found (p>0.05) between pastures or difference between the two breeds. The results obtained through performance evaluations, carcass characteristics and meat quality, tropical grasses grass Aruana and Tifton-85 had a similar potential for finishing lambs for slaughter in the fall
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