Results 141 to 150 of about 818,236 (379)
Ammonia Emissions of Laying-Hen Manure as Affected by Accumulation Time
The Journal of Poultry Science, 2011 A study was conducted to investigate how ammonia (NH3) emission of laying hen manure is affected by manure accumulation time (MAT). Three trials were conducted.
Justin H. Chepete, Hongwei Xin, Hong Li
doaj +1 more source
Öko-Legehennen: Ressourceneffizienz und Umweltschutz versus Auslaufmanagement und Flächenbeimessung [PDF]
, 2017 The minimal pasture size of 4 m² per hen for free range laying hens proves to be critical when seen under aspects of environmental protection. Taking a flock size of 1.000 laying hens and a pasture size of 4 m² per animal as a basis and assuming that ...
Deerberg, Friedhelm (freier Berater) +1 more
core
Fatty Acid Interconversion by Laying Hens
Poultry Science, 1966 Abstract FEIGENBAUM and Fisher (1959) demonstrated that the degree of saturation of body fat could be influenced by the ingestion of both saturated and unsaturated fatty acids. Egg fat saturation could be influenced only by the ingestion of unsaturated fatty acids.
openaire +2 more sources
Dietary Phosphorus Needs of Laying Hens
Poultry Science, 1977 Abstract Two experiments were conducted with commercial strain, White Leghorn laying hens, kept in wire cages, to determine the effect of low dietary phosphorus (P) levels on production characteristics. In experiment 1, rations that contained 0.19, 0.28 or 0.37% available P (AP) were fed to 22 week old hens.
W J, Owings, J L, Sell, S L, Balloun
openaire +2 more sources
Pest Management Science, EarlyView.Weed spatial patterns and temporal stability were shaped by species life forms and the cropping systems implemented in the plots. Weed aggregation was more pronounced in conservation agriculture and among perennials. Patch stability was primarily governed by species life form and was stronger among perennials. Abstract BACKGROUND The aggregated spatial
Gal Rozenberg +3 more
wiley +1 more source
How to motivate laying hens to use the hen run? [PDF]
, 2004 In organic agriculture, hens are kept in free range systems. A free range is an enrichment for the hens and brings several advantages for them. Laying hens may show behavioural elements that are not possible in a poultry house.
Hauser, J., Hirt, Helen, Zeltner, Esther
core
DuckNet: an open‐source deep learning tool for waterfowl species identification in UAV imagery
Remote Sensing in Ecology and Conservation, EarlyView.Using drones with thermal‐RGB sensors and a deep learning model (RetinaNet with ResNet‐50), we surveyed non‐breeding waterfowl across restored wetlands in the Mississippi Alluvial Valley. Our model, DuckNet, achieved high accuracy and offers an open‐source, customizable tool for automated waterfowl detection to support conservation monitoring ...
Zack Loken +4 more
wiley +1 more source
EurosurveillanceSalmonella Enteritidis (SE) cases in humans have increased in the Netherlands, from an annual average of 281 (2017–2019) to 427 in 2023, 401 in 2024 and 209 in 2025 (January–June).
Eelco Franz
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, 2015 The aim of the study was to determine the usefulness of two protein concentrates composed of rapeseed meal and new cultivars of narrow-leaved and yellow lupine, peas in laying hen diets and their influence on birds’ performance and egg characteristics ...
A. Rutkowski +4 more
semanticscholar +1 more source
Social, Technological, Economic, and Policy Factors in the Circular Economy Transition in Brazil
Sustainable Development, EarlyView.ABSTRACT A well‐functioning circular economy (CE) integrates resilience across economic, environmental, and social dimensions. This study identifies key drivers and barriers to Brazil's CE transition through 20 semi‐structured interviews with stakeholders. Major sociocultural barriers include inadequate education and limited CE awareness, while growing
Alejandro Gallego‐Schmid +9 more
wiley +1 more source