930 resultados para Coberturas para feridas
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Este trabalho foi conduzido para determinar os efeitos da temperatura ambiente e do empenamento das aves sobre o desempenho de duas linhagens de postura na fase de crescimento (10ª a 13ª semana de idade). Foram alojadas 480 aves de reposição da marca Hy-line, sendo 240 aves de cada linhagem W-36 (leve) e Brown (semipesada), em 5 câmaras climáticas com temperaturas de 12, 18, 24, 30 e 36ºC. em cada temperatura foram avaliadas 3 coberturas de pena; 100% (não depenada), 50% (depenada em 50% do corpo) e 0% (totalmente depenada). A análise estatística dos dados foi realizada segundo um esquema fatorial (5 x 3 x 2) sendo: 5 temperaturas, 3 porcentagens de cobertura de pena e 2 linhagens. Os dados foram submetidos a uma análise de regressão para a obtenção das curvas respostas com os melhores ajustes. A linhagem semipesada apresentou maior consumo de ração em relação à linhagem leve em todas as temperaturas. Houve diminuição do ganho de peso em função da redução no consumo de ração e aumento da temperatura. A linhagem leve apresentou uma maior amplitude nas faixas de conforto térmico (18,33ºC a 32,00ºC) do que a linhagem semipesada (23,75ºC a 29,50ºC).
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The experiment was carried out at Piracicaba, São Paulo, Brazil, from January to February 1993, with the objective of evaluating the behavior responses of Holstein cows, with constant or limited access to shade. The experimental design used was completely randomized. Twenty four dairy cows were used, at different lactation stages and production levels, kept in two free stall barns, with or without protection against solar radiation in south-east and north-west edge. The behavior parameters studied were: alimentation, rumination, rest time and frequency and water ingestion frequency. The protection of the free stall barn didn't affect the behavior responses. The alimentation, rumination and rest time, daily, were 3.4, 7.0 e 9.0 hours, respectively. The highest alimentation frequencies were before and after milking. The rumination was mainly during nocturnal period; the rest was more frequent during the period with higher solar radiation. The animals stayed more time in the shelter (13.4 vs 2.5 h/day). The highest daily water ingestion frequencies were in the hot time and next milking, mainly.
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Mycobacterium fortuitum is a rapidly-growing species of bacteria, ubiquitous in the environment and related to important human mycobacterioses. It has been isolated from blood, abscesses, the endocardium and surgical and traumatic wounds. This mycobacterium is hard to treat, being recognized in the literature as resistant even to the drugs used in the treatment of tuberculosis. The objective of this study was to screen extracts prepared from plants of the Brazilian cerrado (extended savanna-like belt) with known activity against M. fortuitum, employing the Microplate Alamar Blue Assay (MABA) as the analytical method. Out of 26 extracts tested against M. fortuitum, the nonpolar extract of Quassia amara (in methylene dichloride) gave the best result (MIC 62.5μg/ mL), followed by the nonpolar extracts of Syngonanthus macrolepsis, Davilla elliptica and Turnera ulmifolia, with equal MICs of 125μg/ml. The polar extracts (in ethanol and methanol) obtained from the same plants were considered inactive, since the MIC values determined were above 500μg/mL and not significantly different from those of extracts from other plants, without known activity.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
