Produção de forragem pela aveia preta (Avena strigosa L.) em cultivo solteiro ou consorciado com cornichão (Lotus corniculatus L.).

ZOOTEC

Identificação das fontes de crescimento da produção de leite na Região Norte do Brasil, 1990-2011.

O presente trabalho identifica as fontes de crescimento da produção de leite na Região Norte do Brasil, no período 1990-2011, e decompõe o crescimento da produção, nos efeitos expansão do rebanho e produtividade animal. Foram estimadas as taxas de crescimento da produção, plantel de vacas ordenhadas e produtividade animal, por meio de regressão linear, com emprego de modelo semilogarítmico. A produção regional cresceu a taxa de 6,2% ao ano, com predominância do efeito expansão do rebanho, cuja taxa de crescimento foi de 3,3% ao ano, enquanto o crescimento da produtividade animal foi de 2,9% ao ano. Em quatro dos sete estados que compõe a Região Norte ocorreu crescimento da produtividade animal superior ao do rebanho, o que sinaliza avanços na adoção de tecnologias nos sistemas de produção

Formation of Mass Transport Deposits on the Submarine Bank of Portimão (Gulf of Cadiz, SW Iberia)

European Geosciences Union General Assembly (2017. Viena)The development of submarine mass transport deposits (MTDs) plays an important geo-hazards role along continental margins. Accordingly, their identification and characterization is crucial to understand their sources, dynamics, frequency and spatial distribution. In this work a piston core located at the slope (2876 m water depth) of the southern flank of Portimao Bank (Portugal, Gulf of Cadiz, SW Iberia) underwent detailed magnetic (fabric and rock magnetism) and sedimentological (grain-size, carbonates, organic matter) analyses complemented by AMS 14C dating. Such multidisciplinary study identified about one meter of sediments that is unconformable with the ages obtained above and below this layer. Its magnetic fabric, as determined by anisotropy of magnetic susceptibility, indicates sharply changes from oblate to neutral shape, decrease of the anisotropy and preferred orientation of the magnetic susceptibility ellipsoid. Such layer is also individualized by sedimentary parameters, especially in its upper part by a lighter colour and decrease of the mean grain size than the rest of the core. Based on these results it is possible to conclude that the sedimentary column analyzed here shows evidence of an on-going development of a slide, which is well individualized and characterized by magnetic fabric studies.Instituto Dom Luiz, University of Lisbon, PortugalInstituto Superior de Engenharia de Lisboa, PortugalEstrutura de Missão para a Extensão da Plataforma Continental, PortugalInstituto Português do Mar e da Atmosfera, PortugalInstituto de Ciencias del Mar, Consejo Superior de Investigaciones Científicas, EspañaCentro Oceanográfico de Málaga, Instituto Español de Oceanografía, EspañaInstituto Geológico y Minero de España, Españ

Zonación vertical de la bioturbación y movimientos en masa en el Banco de Portimão (Golfo de Cádiz, SO de Iberia)

This work presents results from bioturbation intensity and trace fossil analysis of the piston core PC07, recovered at Portimão Bank during the MONTERA cruise in 2012. The aim was to investigate the potential of bioturbation analysis as an indicator for mass movement events. Bioturbation and trace fossil identification was complemented with results from sedimentological analysis (grain-size, carbonates, organic matter), measurements of magnetic fabric parameters (mass magnetic susceptibility and anisotropy of magnetic susceptibility), and AMS 14C dating. Considering the vertical zonation of bioturbation, magnetic fabric changes, sedimentology and AMS radiocarbon dating, two intervals were identified, Interval A (0-180 cm) and Interval B (180-356 cm), being the limit between them placed at 180-181cm. These intervals seem to replicate almost the same vertical zonation of bioturbation and the trend of carbonates and organic matter changes downcore. The magnetic fabric parameters (degree of anisotropy – Pj and shape – T of the magnetic susceptibility ellipsoid) show the major change at about 180 cm. Geochronological results indicate that the age of sediments in Interval A is 8590 yr BP (31-32 cm) and 14 300 yr BP (103-104 cm). Otherwise, ages in Interval B are the following: 5035 yr BP (181-182 cm), 8900±50 yr BP (219-220 cm), 18999±120 yr BP (303-305 cm). These results point to the emplacement of sediments of Interval A on top of youngest sediments of Interval due to landsliding. Since no internal deformation is seen, probably this indicates translational movement and short transport from the source.Versión del edito

Avaliação da qualidade do leite de cabra produzido por agricultores dos estados do Rio Grande do Norte e do Ceará.

This study aimed to characterize the quality of goat milk obtained from dairy farms family based in the states of Rio Grande do Norte and Ceará, Brazil, before and after the adoption of good practices in milking, according to Kit Embrapa of Manual Milking for dairy goats. The milk samples for total bacterial counts (CTB) were collected after the morning milking, directly from brass, for three days before and three days after the adoption of Kit Embrapa. The data was statistically analyzed by the statistical program R, through the Student t test for paired samples and comparison of means by logarithmic transformation neperiana. The mean values found were 5,2x105 CFU/mL and 4,1x105 CFU/mL respectively before and after use of the kit. The results indicate that the quality of goat milk produced on estates family based in both States, is within the parameters of hygiene and quality. However, there is a need for improvements in hygiene and sanitary handling of animals before, during and after milking, the milk for obtaining the best commercial quality

Produção de leite e consumo de concentrado em búfalas lactantes suplementadas com concentrado à base de torta de cupuaçu (Theobroma grandiflorum) e torta de murumuru (Astrocaryum murumuru).

O objetivo deste estudo foi avaliar a produção de leite e o consumo de concentrado em búfalas em lactação suplementadas com resíduos agro-industrial, torta de cupuaçu (Theobroma grandiflorum) e torta de murumuru (Astrocaryum murumuru). A quantidade de concentrado foi administrada com base na produção de leite individual. O delineamento experimental foi o quadrado latino 3 x 3, quatro quadrados, distribuídos de acordo com a data de parição das búfalas. O experimento durou 63 dias, com três períodos de 21 dias, com 10 dias de adaptação inicial e os últimos 11 dias para recolher os resultados. O consumo de suplemento e produção de leite foram avaliados nos últimos sete dias de cada período. Para a análise estatística foi utilizado o modelo misto (PROC MIXED) do SAS (SAS, 1999). Não houve diferença estatística para o consumo de concentrado e produção de leite. As tortas de cupuaçu e de murumuru podem ser usado como suplementação alimentar alternativa em búfalas em lactação, trazendo um desempenho semelhante ao concentrado à base de milho e soj

Efeito da aplicação de dejetos de suínos na concentração de minerais na parte aérea de capins Tifton 85

The experiment was carried out in Marechal Cândido Rondon  (Paraná, Brazil), in pasture of Tifton 85 (Cynodon spp), aiming to estimate the concentrations of minerals, phosphorus, potassium, calcium, magnesium and zinc in shoots of the grass, as well as dry matter production  after the application of swine manure.  The experiment was carried out in a randomized block design arranged in a 5x3 factorial consisting of five doses of swine manure  (0, 25, 50, 75 and 100 m ³ ha-1), examined in three cuts. In the comparison of harvests, the analysis of variance showed significant difference (P<0,05) in the concentration of potassium in the aerial part of Tifton 85. There were positive and negative linear effects regarding the doses  of manure,  respectively on the phosphorus and magnesium concentrations in the dry matter. It was observed a linear increase in the dry matter production in function of the application of swine manure.O experimento foi conduzido em Marechal Candido Rondon, em pastagem de capim Tifton-85 (Cynodon spp), com objetivo de avaliar os teores de minerais, fósforo, potássio, cálcio, magnésio e zinco na parte aérea da forrageira e a produção de matéria seca em função da aplicação de doses de dejeto de suínos. Utilizou-se o delineamento de blocos ao acaso, em esquema fatorial 5x3 sendo cinco doses de dejetos de suínos (0, 25, 50, 75 e 100 m³ ha-1), avaliadas em três cortes. Na comparação entre os cortes, a análise de variância revelou diferença significativa (P<0,05) nos teores de potássio na parte aérea do capim Tifton-85. Houve efeito linear positivo e negativo das doses de dejetos, respectivamente, sobre as concentrações de fósforo e de magnésio na matéria seca. Observou-se também aumento linear na produção de matéria seca, em função da aplicação de doses crescentes de dejetos

Composição centesimal, física e sensorial de carne de búfalos terminados em sistema tradicional e silvipastoril na Amazônia Oriental.

The aim of this study was to evaluate the physical and sensory characteristics of buffalo meat ended Traditional Systems and Silvopastoral. The experiments were performed in the Research Units Animal "Senator Álvaro Adolpho", SSP installed and "Dr. Philibert Camargo "(ST), belonging to Embrapa Amazônia Oriental, Belém-Pará. After this period the animals were slaughtered at a commercial packing plant and their carcasses were identified and cooled for 24 hours. The right side carcass was cut between the 12th and 13th ribs and removed the Longissimus dorsi (kebabs), for analysis of pH, texture and color lenses, weight loss by cooking, ability to retain water, determining the composition proximate and sensory evaluation. The experimental design was completely randomized, the data submitted to analysis of variance and means were compared by 't' test at 5%. There were no differences (p> 0.05) in chemical composition and physical analysis between meat derived from animals of the two systems. Among the evaluated sensory only the "aroma" differed statistically. It is still early to suggest the use of either system, just based on the quality of meat produced, should be considered also the environmental, social and economic