In this study, the microclimate changes in silvopastoral systems are quantified at different time and spatial scales compared with single-pasture systems. The study was conducted a system São Carlos, Brazil (22°01' South 47°53' West). consisted of grass pastures [Urochloa (sin. Brachiaria) decumbens cv. Basilik] lined strips native trees spaced 17 m. Continuous measurements (air temperature, relative humidity, wind speed, incident photosynthetically active radiation) were carried out from...

Abstract The use of plant phenology for determining the timing management practices is poorly understood in species‐rich grasslands. objectives were to assess effect on dates at which phenological stages occur and compare different methods calculating growing degree‐days order predict them. Dates species occurred recorded strategy resource capture was assessed through measurements dry matter content leaves two experiments regions with contrasting climatic conditions. In Experiment 1,...

Two cultivars of Brachiaria brizantha (Hochst ex. A. Rich) Stapf. (Syn. Urochloa) were evaluated for their adaptation to water deficit and the stress response mechanisms in a greenhouse experiment. The experimental design was completely randomized blocks with 2 × 4 factorial arrangement. Marandu BRS Piatã under two availability conditions, or without restriction. harvests carried out 0, 7, 14 28 days after start For both cultivars, caused reduction shoot biomass leaf area an increase...

Tropical grasses are economically important for cattle production in Brazil, and accurate simulation models tropical pastures can benefit forage researchers farm managers by improving systems. This research calibrated validated four modeling approaches of contrasting complexity to simulate mass Mombaça Guinea grass ( Panicum maximum Jacq.). The included three empirical agro‐climatic (i.e., using cumulative degree days, photothermal units, a climatic growth index) biophysical model,...

O experimento foi desenvolvido em casa de vegetação na Embrapa Pecuária Sudeste, utilizando acessos Brachiaria brizantha. delineamento experimental o blocos ao acaso, com arranjo fatorial 2 X 4, sendo dois tratamentos (com e sem déficit hídrico) quatro genótipos. grupo genótipos avaliado formado pelas cultivares 'BRS Piatã', 'Marandú', 'Xaraés' Paiaguás', realizado durante mês julho 2008. As variáveis analisadas foram massa seca total, parte aérea, raiz, colmo, folha, taxa alongamento...

The objective of this work was to develop and validate linear regression models estimate the production dry matter by Tanzania grass (Megathyrsus maximus, cultivar Tanzania) as a function agrometeorological variables. For purpose, data on growth forage from 2000 2005, under dry‑field conditions in São Carlos, SP, Brazil, were correlated following climatic parameters: minimum mean temperatures, degree‑days, potential actual evapotranspiration. Simple regressions performed between variables...

O objetivo deste estudo foi testar modelos empíricos de regressão linear, para a predição do acúmulo matéria seca (TAMS) Urochloa brizantha cv. Marandu, em função variáveis agrometeorológicas. Para gerar os modelos, utilizada taxa média seca, condições sequeiro, entre 1998 e 2002. As avaliadas foram: temperaturas mínima, máxima média, radiação global (Rg), graus-dia, evapotranspiração real (ETR) potencial (ETP) obtidas partir balanço hídrico, unidades fototérmicas (UF) índice climático...

To compare the integrated crop-livestock-forest (ICLF) and crop-livestock (ICL) systems in relation to thermal comfort grazing behavior of Girolando heifers, a 2 × crossover trial (two system two periods) was carried out with eight ¾ Holstein ¼ Gyr heifers Xaraés–palisade grass pasture under intermittent stocking 10 days occupation period 20 resting. In ICLF, crown cover eucalyptus planted rows 65% at beginning experiment. Animal assessed through bioacoustics by recording heifers’ sounds for...

The extraction of mechanically separated meat has emerged as an attractive process. However, it increases the incorporation oxygen and, consequently, flavors due to rancidity. Thus, preservatives must be added. objective this study was evaluate shelf life minced tilapia replace synthetic with Hijiki and Nori seaweeds extracts. application extracts had no effect on chemical composition tilapia. seaweed inhibitory total volatile base nitrogen. complied microbiological standard set by Brazilin...

Abstract To assess the whole‐sward maturity, which is a primary concern for grassland managers, we studied three forage grass species with contrasting phenology over range of climatic conditions among sites. We considered two main issues: (i) How population maturity related to phenology, and this relation affected by environmental factors? (ii) Is sum temperatures good index describe phenological development under climates? explore role temperature accumulation in development, described...

Os sistemas de produção animal no Semiárido brasileiro podem ser vulneráveis às mudanças climáticas. Cenários futuros para a Brachiaria brizantha, Panicum maximum, Cenchrus ciliaris e Opuntia fícus indica foram analisados identificação áreas mais vulneráveis. A partir dos modelos já disponíveis, identificadas algumas maior vulnerabilidade, o que possibilitou indicação alternativas adaptação mitigação possíveis impactos negativos das climáticas globais sobre do brasileiro. O desenvolvimento...

En Cuba, a partir del 2007, se detectó la presencia de Pterois volitans, comúnmente llamado Pez León, especie invasora causante grandes daños comunidades ictiológicas autóctonas en diferentes regiones mundo. Este trabajo propuso determinar distribución y abundancia León sitios muestreo zona costera uso turístico Holguín. El estudio realizó ocho campañas durante el período abril-noviembre 2016. Se seleccionó un total siete monitoreo distribuidos dos municipios provincia Holguín (Rafael Freyre...

des établissements d'enseignement et de recherche français ou étrangers, laboratoires publics privés.

The objective of this study was to determine the chemical composition, carbohydrates fractionation and kinetics in vitro ruminal fermentation fibrous non-fibrous five sugarcane varieties. Variety SP79-1011 presented highest value total digestible nutrients (65.9%), followed by varieties Java, RB72454, SP80-1842 RB765418. For accumulated gas dry matter, 48 96 horas incubation were higher for variety SP79-1011, showing significant difference comparison with RB765418, RB72454 SP80-1842,...

The evaluation of genetic resources in germplasm banks Paspalum can contribute to their use breeding programs and for advanced research biotechnology. This study evaluated the tolerance 11 accessions abiotic stress caused by soil water deficit a greenhouse experiment at Embrapa Pecuária Sudeste, São Carlos, state Paulo, Brazil. variables analyzed were: dry biomass green matter, dead matter roots; leaf area; potential; number days lose turgor (wilting); moisture wilting; tillers per pot....