Desempenho produtivo de caprinos mestiços da raça Anglo-Nubiana, no Acre.

O experimento foi conduzido na Fazenda Experimental do Centro de Pesquisa Agroflorestal do Acre - CPAF-Acre, localizada no município de Rio Branco. Foram utilizados inicialmente 20 matrizes e dois reprodutores mestiços da raça An-glo-nubiana, criados em regime semi-intensivo de exploração, tendo como base alimentar pastagens de colonião (Panicum maximum) e brizantão (Brachiaria brizan-tha). O sistema de acasalamento adotado foi o da monta natural a campo, onde o macho permanecia com as fêmeas durante todo o ano. Foram obtidos os índices de prolificidade (1,26%) natalidade (125,2 %); fertilidade ao parto (87,5%); intervalo entre partos (266,2 dias); proporção sexual (50%); mortalidade de 0-6 meses (14,63%); peso ao nascer para machos (2,81 i<g), para fêmeas (2,71 kg) e fêmeas com três partos em dois anos (7,9%). Ocorreram parições em quase todos os meses do ano (exceto setembro), com uma maior concentração no período de junho a agosto (413%). As cabras que tiveram parto duplo apresentaram um peso ao parto maior (P< 0,01), em relação àquelas com panos simples. Conclui-se que o desempenho reprodutivo do rebanho estudado foi bom, podendo, no entanto, atingir índices mais elevados, desde que se introduzam, no sistema de criação, algumas práticas de manejo reprodutivo e melhores condições nutriclonais.bitstream/item/161362/1/975.pd

Complexity and predictability of daily precipitation in a semi-arid region: an application to Ceará, Brazil

International audienceComplexity and predictability of daily precipitation in a tropical semi-arid region (Ceará State, Brazil) is assessed by applying entropy concepts. Precipitation regimes in that region depend on several dynamical forcings, the most important being the displacement and activity of the Inter-tropical Convergence Zone in the Atlantic Ocean. Topography is another important factor that influences the spatial distribution of rainfall in the region. A hierarchical approach based on sequences of events of different lengths is used to estimate complexity of daily precipitation records. It is shown that precipitation in Ceará exhibit more random than periodic sequences, which indicates a large degree of complexity. Nevertheless, there is indication of potentially inherent rules in the precipitation time-series that could ultimately improve prediction on time-scales between 9?11 days. It is suggested that synoptic-scale disturbances (1?8 days) represent important sources of rules in the precipitation regimes in this region

Influence of estimated training status on anti and pro-oxidant activity, nitrite concentration, and blood pressure in middle-aged and older women

The purpose of this study was to compare the association between anti and pro-oxidant activity, nitrite concentration, and blood pressure (BP) in middle-aged and older women with different levels of estimated training status (TS). The sample consisted of 155 females (50-84 years) who were submitted to a physical examination to evaluate estimated TS through the "Functional Fitness Battery Test," BP measurements, and plasma blood samples to evaluate pro-oxidant and antioxidant activity and nitrite concentrations. Participants were separated by age into a middle-aged group (< 65 years) and an older (≥65 years) group and then subdivided in each group according to TS. Blood biochemistry was similar between groups. On the other hand, protein oxidation was lower in participants with higher TS, independent of age. Older females with higher TS presented higher nitrite concentrations, lower lipoperoxidation, and lower values of BP compared with those with lower TS. Lower GPx activity was observed in participants with higher TS compared with middle-aged with lower TS. Thus, our results suggest that good levels of TS may be associated with lower oxidative stress and higher nitrite concentration and may contribute to maintain normal or reduced blood pressure values.Fil: Jacomini, André M.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Dias, Danielle da Silva. Universidade Nove de Julho; BrasilFil: Brito, Janaina de Oliveira. Universidade Nove de Julho; BrasilFil: da Silva, Roberta F.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Monteiro, Henrique L.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Llesuy, Susana Francisca. Universidade Nove de Julho; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Bioquímica y Medicina Molecular. Universidad de Buenos Aires. Facultad Medicina. Instituto de Bioquímica y Medicina Molecular; ArgentinaFil: De Angelis, Kátia. Universidade Nove de Julho; BrasilFil: Amaral, Sandra L.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Zago, Anderson S.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasi

Mapeamento pedológico detalhado da bacia do córrego Águas da Lúcia, município de Botucatu- SP.

A área de 1.894 ha da bacia do Córrego Águas da Lúcia, localizada no município de Botucatu - SP foi selecionada para mapeamento pedológico detalhado a fim de produzir uma base de dados confiável para fins de pesquisa em solos e manejo sustentado de bacias hidrográficas com solos frágeis. Através da amostragem dos pontos de análise de solos, da descrição morfológica de perfis no campo, coleta de material dos horizontes pedogenéticos e análises físicas e químicas em laboratório foi possível classificar os solos da bacia e delinear cinco unidades de mapeamento. A partir deste levantamento, a bacia apresentou solos com baixo teor de argila, de textura arenosa e média, pouco acúmulo de carbono em superfície, baixa fertilidade natural e uma distribuição bastante homogênea das classes d e solo justificando o uso de um levantamento detalhado até o quinto nível categórico do Sistema Brasileiro de Classificação de Solos

Factors affecting the production of 4-ethylphenol by the yeast Dekkera bruxellensis in enological conditions

"Food Microbiology" article in PressThe conversion of p-coumaric acid into 4-ethylphenol was studied in Dekkera bruxellensis ISA 1791 under defined conditions in synthetic media. The production of 4-ethylphenol occurred roughly between mid-exponential growth phase and the beginning of the stationary phase. This behaviour was observed when glucose was the only energy and carbon source, the conversion rate being close to 90%. Ethanol, as the single energy source, yielded conversion rates close to 80% while in the presence of trehalose and acetic acid conversion rates lower than 10% were obtained. The production of 4-ethylphenol was not observed when the cells were maintained in buffer solution without carbon and energy sources. The precursor of 4-ethylphenol, p-coumaric acid, was not utilized as energy and carbon source. Furthermore, it was shown that 4-vinylphenol may be used as a precursor of 4-ethylphenol in the absence of pcoumaric acid. Growth and 4-ethylphenol production were inhibited by increasing concentrations of ethanol, being fully prevented at 13% (v/v) ethanol. The cultivation of strain ISA 1791 in mixed culture with Saccharomyces cerevisiae, in synthetic medium, showed that the cell numbers of D. bruxellensis increased from 104 cfu/ml to 5 109 cfu/ml. Laboratory microvinifications of white and red juices inoculated with as low as 10 cfu/ml of D. bruxellensis and 107 cells/ml of S. cerevisiae showed growth of D. bruxellensis to levels of about 5 108 cfu/ml. In addition, 4-ethylphenol production by D. bruxellensis was observed only after complete fermentation of the grape juice

Comportamento de algumas gramíneas forrageiras em solo de pastagem degradada de Paragominas-PA.

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