1,721,099 research outputs found
Feed additives and enrichment materials to reduce chicken stress, maximize productivity, and improve welfare
Full text linkEnvironmental stress poses serious threats to animal welfare and production, particularly in poultry, which are susceptible to such stress. It can increase susceptibility to diseases and infections, reduce growth rates and reproductive performance, and increase behavioral issues. Environmental stress caused by conventional housing conditions can negatively affect well-being and productivity. High temperature, overcrowding, poor ventilation, insufficient lighting, and wire cages are some of the most prominent stressors in conventional housing systems. To address environmental stress in chicken farms, some strategies and tools, such as using anti-stress feed additives and enriching cages, can help improve bird behavioral activities and welfare. Breeders can improve overall bird performance by implementing these strategies and creating a more enriched and comfortable environment. Thus, this review discusses the importance of using different feed additives and environmental enrichment materials to reduce stress in chicken farms (broiler and layer) and improve bird productivity and well-being
Current Applications and Trends in Rabbit Nutraceuticals
Full text link: To ensure the sustainability of rabbit production and protect the global rabbit industry, costeffective and practical strategies for improving rabbit production and meat quality must be developed.
Recently, rabbit farming, like other animal farming, has faced feed shortages due to the impact of
climate change, high competition among livestock species, and war conditions. The continued use
of conventional feed additives in rabbit diets, whether derived from plant or animal sources, has
become a critical issue. Furthermore, there is a global trend toward finding natural alternatives
to synthetic drugs, such as antibiotics, in rabbit farms. Finding readily available and alternative
feed additives is therefore critical to protecting the rabbit industry, particularly in subtropical and
Mediterranean-developing countries. Nutraceuticals positively influence several physiological and
productive traits in animals, as well as enhancing their health and welfare. The present review
aims to provide an overview of previous studies on the potential of using some plant and animal
products as nutraceutical alternatives and feed additives in rabbit diets, separately or in combination,
to act as natural growth promoters, antioxidants, anti-inflammatory, and antimicrobial agents, and
immunostimulants in rabbit farms. From the results, some unconventional plant and animal products,
such as spirulina, garden cress, milk whey, and bee venom, can be successfully used as dietary
supplements and substitutes in rabbit farms to motivate rabbit growth and reproduction, as well as
enhance immunity. These products are rich in minerals, vitamins, enzymes, organic acids, flavonoids,
and phenolic acids. These active substances benefit the animal’s digestive tract in different ways,
including activating the digestive enzymes and maintaining microbial balance, promoting vitamin
synthesis. They also improve rabbit production, reproduction, and health
Genetic involvement in statins induced myopathy. Preliminary data from an observational case-control study
No full textOn the Solved Turbulent Scales in Turbulent Plume Fires
No full textPlume fires are characterized by a turbulent nature with a large number of different
scales. LES is often used to solve the largest structures and to model the smallest ones. Grid size
and time steps become decisive to place the limit between resolved and modelled turbulence.
Significant information on this limit and its placement can be obtained with spectral analyses of
the specific turbulent kinetic energy. While frequency analysis is relatively easy, an analysis in
the wavenumber domain is more challenging. The IWC method, typically used in structures and
acoustics, is used here for this purpose. IWC method allows to obtain wavenumber spectra with
a better resolution than those obtained with a direct approach. Furthermore, in this paper the IWC
method is also used in its reverse form to obtain frequency spectra. Although rather dense grids
have been chosen, the number of nodes along the plume and their spacing is not such as to
guarantee detailed wavenumber spectra with the direct approach and consequently with the
reverse IWC. On the contrary, the IWC method provides wavenumber spectra in agreement with
those obtained directly, but of much higher quality
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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