61 research outputs found
Conservation efficiency and nutritive value of silages made from grass-red clover and multi-species swards compared with grass monocultures
peer reviewedBinary grass-clover and multi-species swards can increase herbage yields or facilitate reduced inputs of inorganic
fertiliser nitrogen (N) compared with perennial ryegrass monocultures. However, the efficiency of the ensilage
process and the nutritive value of silage produced from multi-species swards has not been documented. Replicate
samples from grass-red clover binary mixture and multi-species mixture swards were ensiled in laboratory silos to
assess the ensilability, fermentation characteristics, conservation losses and silage nutritive value compared with
grass monocultures produced using inorganic N fertiliser. The results suggest that assessment of the ensilability
and subsequent ensilage characteristics of binary and multi-species mixtures should be based on direct sampling
from such mixtures rather than being predicted from values obtained from monocultures of constituent species.
Under favourable ensiling conditions, unwilted binary mixtures and multi-species mixtures are satisfactorily
preserved as silage, comparable to a perennial ryegrass monoculture receiving inorganic N fertiliser. However,
when ensiled under more challenging crop conditions the mixtures exhibited a greater requirement for their
preservation to be aided, compared with the perennial ryegrass monoculture. Despite the application of inorganic N
reducing the legume content of multi-species mixture swards, it had relatively little effect on herbage ensilability or
silage preservation. For all species treatments, silage nutritive values were primarily dependent on the pre-ensiling
values, although herbage digestibility values declined during ensilage where the ensilage process was inefficient.
The current study suggests that in order to be satisfactorily preserved as silage, binary grass-clover and multispecies
swards have a greater requirement for an adequate rapid field wilt and/or effective preservative application
compared with perennial ryegrass produced using inorganic fertiliser N
Avaliação do capim-elefante (Pennisetum purpureum Schum.) cultivar taiwan A-148, ensilado com diferentes técnicas de redução de umidade
An overview of the recent developments on fructooligosaccharide production and applications
Over the past years, many researchers have suggested
that deficiencies in the diet can lead to disease states
and that some diseases can be avoided through an adequate
intake of relevant dietary components. Recently, a great interest
in dietary modulation of the human gut has been registered.
Prebiotics, such as fructooligosaccharides (FOS), play a key
role in the improvement of gut microbiota balance and in
individual health. FOS are generally used as components of
functional foods, are generally regarded as safe (generally
recognized as safe status—from the Food and Drug Administration,
USA), and worth about 150€ per kilogram. Due to
their nutrition- and health-relevant properties, such as moderate
sweetness, low carcinogenicity, low calorimetric value,
and low glycemic index, FOS have been increasingly used
by the food industry. Conventionally, FOS are produced
through a two-stage process that requires an enzyme production
and purification step in order to proceed with the chemical
reaction itself. Several studies have been conducted on the
production of FOS, aiming its optimization toward the development
of more efficient production processes and their potential
as food ingredients. The improvement of FOS yield and
productivity can be achieved by the use of different fermentative
methods and different microbial sources of FOS producing
enzymes and the optimization of nutritional and
culture parameter; therefore, this review focuses on the latest
progresses in FOS research such as its production, functional
properties, and market data.Agencia de Inovacao (AdI)-Project BIOLIFE reference PRIME 03/347. Ana Dominguez acknowledges Fundacao para a Ciencia e a Tecnologia, Portugal, for her PhD grant reference SFRH/BD/23083/2005
Produção de silagem de capim-marandu (Brachiaria brizantha Stapf cv. Marandu) com e sem emurchecimento
Composição quÃmica e digestibilidade em ovinos da grama estrela ensilada com diferentes aditivos
Scalable High-Performance Algorithm for the Simulation of Exciton Dynamics. Application to the Light-Harvesting Complex II in the Presence of Resonant Vibrational Modes
Efeitos da inclusão de forragem de leucena (Leucaena leucocephala (Lam.) DeWit) na qualidade da silagem de milho (Zea mays L.)
Estabilidade aeróbica de silagens de capim-elefante (Pennisetum purpureum, Schum) emurchecido e tratado com inoculante microbiano
Evaluation of lime and hydrothermal pretreatments for efficient enzymatic hydrolysis of raw sugarcane bagasse
- …