626 resultados para Fêmea suína


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O objetivo deste estudo foi avaliar os efeitos e os métodos de aplicação dos aditivos foliares decanoato de nandrolona (esteroide anabolizante) a 0,5%, ácido ascórbico (vitamina C) a 0,5%, palmitato de retinol (vitamina A) a 0,5% e acetato de retinol (vitamina A) a 1,0% em alguns parâmetros biológicos do bicho-da-seda. No experimento do modo de aplicação (pulverização foliar antes do fornecimento, depois do fornecimento e por imersão antes do fornecimento) foram utilizados: decanoato de nandrolona 0,5%; ácido ascórbico 0,5%; e palmitato de retinol 0,5%. No ensaio de desenvolvimento do inseto foram avaliados: duração e viabilidade larval; peso de casulo; taxa de encasulamento; teor líquido de seda; longevidade de adultos; número de ovos por fêmea; e duração do período de subida ao bosque. Para o modo de aplicação determinaram-se: ganho de peso, comprimento, diâmetro do tórax e diâmetro do abdome de lagartas de 5º ínstar, assim como comprimento, diâmetro e peso de glândula sericígena. Os resultados mostraram que, apesar de o ácido ascórbico proporcionar os melhores valores para o desenvolvimento corpóreo das lagartas, este não corresponde a incrementos significativos na produção; o palmitato de retinol não melhora o desenvolvimento das lagartas; o acetato de retinol e o palmitato de retinol prolongam o período larval, sem, no entanto, alterar significativamente os parâmetros de produção; a imersão de folhas antes do fornecimento às lagartas é mais viável para a aplicação dos aditivos.

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The objective of this work was to evaluate the development, survival, reproductive capacity, and longevity of the Asian ladybug Harmonia axyridis in comparison with Cycloneda sanguinea and Hippodamia convergens. Coccinellid larvae and adults were fed daily with Schizaphis graminum. Ten couples of each species were isolated for evaluation of the adult phase. The duration of the larval stage of H. axyridis is the longest (10.2 days) and its adults are the heaviest (29.7 mg) compared with C. sanguinea and H. convergens. The three species showed similar percentages of survival during the developmental stages. An average of 82% of C. sanguinea, H. axyridis, and H. convergens larvae reached adulthood, which indicates that temperature (25°C) and the offered prey are favorable to coccinellid development. Harmonia axyridis produces a higher total number of eggs per female (1,029.2) than the other evaluated species. However, H. axyridis, which lives for an average of 147.2 days, does not show a significantly greater longevity than C. sanguinea (87.2 days) and H. convergens (134.3 days).

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Pós-graduação em Agronomia (Entomologia Agrícola) - FCAV

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Zootecnia - FCAV

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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This study aims to assess the implementation of Lean Six Sigma in the preparation of plates and hot lamination process for a company of aluminum rolled products, to improve the quality, productivity and process efficiency. As a basis for achieving these goals, the DMAIC methodology and various quality tools such as Cause Effect Diagram, Process Flow, SIPOC, Pareto, FMEA and Control Chart were used, trying to propose improvements to processes and increase their efficiency. The results were significant and were the basis for the continuation of a continuous improvement project throughout the factory

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Zidovudine (AZT) is the drug most commonly used in AIDS treatment, isolated or in combination with other antiretroviral agents, but it has certain limitations due to its therapeutic dose-dependent haematological toxicity. In addition, it has low oral bioavailability, since it undergoes pre-systemic metabolism. The nasal route has been used as an alternative route for drug administration, because it can promote its direct absorption to blood circulation, avoiding hepatic metabolism. However, this route presents as a factor limiting the mucociliary clearance mechanisms that remove quickly the formulation of the nasal cavity. To prolong the residence time of formulations, in this direction, has been proposed the development of mucoadhesive systems. Among the various existing systems, the use of chitosan (QS), as mucoadhesive polymer, has been widely exploited in the preparation of nanoparticles (NPs). The objective of this study was to develop and characterize QS’s NPs for intranasal administration of AZT. For both NPs have been developed by ionic crosslinking of QS with sodium tripolyphosphate (TPP). These NPs were characterized by studies of particle size distribution, zeta potential, morphology, mucoadhesion tests, assessing the ability of encapsulation of the drug and permeation profile of AZT. The evaluation of AZT in the NPs was determined by UV-Vis spectroscopy. Mucoadhesion measures were made using a texture analyzer, using a mucin disk and porcine mucous membrane , and permeation assay were conducted using porcine nasal mucous membrane adapted to the Franz cell. These results suggest that the systems in hand have great potential for nasal AZT administration

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Esta pesquisa tem como objetivo de examinar as estratégias de expansão das firmas brasileiras do setor de carnes (bovina, suína e avícola) para além das fronteiras nacionais a partir da literatura sobre internacionalização de empresas. Essa literatura aponta fatores como a origem do capital, o grau de internacionalização da empresa, o setor de atuação, entre outros, como importantes condicionantes que afetam esse processo. No entanto, vários desses fatores não são diretamente aplicáveis aos casos brasileiros, caracterizado por uma internacionalização tardia e, em alguns casos, rápida. Para este estudo foram selecionadas três empresas nacionais do setor de carnes que apresentam diferentes estágios de internacionalização: JBS-Friboi, Marfrig, Brasil-Foods (Perdigão e Sadia). As informações selecionadas sobre cada empresas foram reunidas em dossiês corporativos, e analisadas através de estudos de casos, permitiram examinar e comparar as estratégias globais das empresas. Os resultados permitem concluir que as duas primeiras empresas demonstram uma estratégia agressiva de internacionalização (em certa medida a primeira fazendo o papel de líder e a segunda de seguidora e, por isso, complementares em posicionamento nos diferentes mercados regionais), enquanto a terceira se mantém nas etapas iniciais desse processo, fortemente vinculadas às exportações a partir do Brasil

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There are diseases in vertebrates associated with the structure of bone tissue that directly affect the locomotor system of the animal. Being a endoskeleton, the diagnosis of these diseases becomes difficult in vivo. The characterization of the physical structure of the bone tissue of healthy animals becomes a major tool in the diagnosis comparison of live animals. Thus, the objective of this work is to determine the average value of the key physical properties of the bone structure used in the clinical diagnosis, such as: bone density, porosity, and mass attenuation coefficient of 59.6 keV photons of bone tissue and bovine and equine check variations in these values. The samples were provided by the pathology department of the Faculty of Veterinary Medicine and Zootechny of Botucatu-SP, which are of one male equine and one female bovine animals, using the radio and metacarpus, together with these materials were supplied the historic them. They were withdrawn ten samples in cuts of 10cm over the bone . These samples were submitted to the wet method of immersion in water for the density, by the method of attenuation of gamma radiation of radioisotope 241Am, it is estimated the mass attenuation coefficient, and then were dried in the oven for determining the content moisture. In determining the porosity of the samples was tight ground, in order to obtain the density of particles. The results for the mass attenuation coefficient of gamma radiation to the levels of saturated humidity, environment humidity, dry humidity respectively 0289 ± 0039; 0286 ± 0040 and 0297 ± 0042. And the density of particles was 2.2691 g/cm3