Meat quality of lambs fed different saltbush hay (Atriplex nummularia) levels

Climate changes have increased soil and water salinity, compromising animal produc- tion especially in dry areas where scientists have become more interested in halophyte plants, like saltbush. The effects of saltbush hay levels (30, 40, 50 and 60%) were evaluated based on physical-chemical, nutritional and sensory parameters of Santa Ine^s lamb meat. Thirty-two 8-month-old castrated Santa Ine^s lambs, with initial weights of 22±1.97 kg were used; they were slaughtered after 60 days in the feedlot. The pH, colour, moisture, protein and cholesterol contents did not differ among treatments. Panelists observed a greater inten- sity of lamb smell and flavour (P=0.0035) in the meat of animals that received more con- centrate in the diet. An increase in the inclu- sion of saltbush increased ash percentage (P=0.0232), total saturated (P=0.0035) and polyunsaturated (P=0.0287) fatty acids and reduced the lipids (P=0.0055) and the n-6:n-3 ratio (P=0.0058) of the meat. Therefore, salt- bush hay can be used as a feeding resource in regions with problems of water and soil salini- ty because it does not impair the physical- chemical, nutritional and sensory quality of sheep meat

Abordagem do ciclo de políticas: uma contribuição para a análise de políticas educacionais Policy cycle approach: a contribution to the analysis of educational policies

Este artigo discute as contribuições da "policy cycle approach" (abordagem do ciclo de políticas) para a análise de políticas educacionais. Essa abordagem foi formulada por Stephen Ball e Richard Bowe e tem sido utilizada em diferentes contextos como referencial teórico-analítico para o estudo de políticas educacionais. O texto apresenta as idéias centrais da referida abordagem, o debate em torno desta e suas contribuições para a análise de políticas educacionais. O texto apresenta também um conjunto de questões norteadoras para a análise da trajetória de políticas ou programas educacionais com base nos cinco contextos do ciclo de políticas: contexto de influência, contexto da produção de texto, contexto da prática, contexto dos resultados/efeitos e contexto de estratégia política. O artigo argumenta que essa abordagem se constitui num referencial analítico útil e que permite uma análise crítica e contextualizada de programas e políticas educacionais desde sua formulação até a sua implementação no contexto da prática, bem como os seus resultados/efeitos.<br>This paper discusses the contributions of the 'policy cycle approach' to analyze educational policies. Formulated by Stephen Ball and Richard Bowe, such approach has been applied in different contexts as a theoretical and analytical framework to examine educational policies. This paper presents the main ideas of this approach, the debate surrounding it, and its contribution to the analysis of educational policies. Based on the five contexts of the policy cycle, namely: influence, text production, practice, outcomes and the political strategy; this paper also presents a set of questions to the trajectory analysis of educational policies or programs. It argues that this approach is a useful analytical framework that allows a critical and contextualized analysis of programs and educational policies from their formulation to their implementation in the context of practice as well as the policy effects