Results 141 to 150 of about 128,209 (338)

Automated Tracking and Behavior Quantification of Laying Hens Using 3D Computer Vision and Radio Frequency Identification Technologies [PDF]

open access: yes, 2014
Housing design and management schemes (e.g., bird stocking density) in egg production can impact hens’ ability to perform natural behaviors and production economic efficiency.
Nakarmi, Akash   +4 more
core   +1 more source

Population dynamics of stubby root nematodes (Trichodorus and Paratrichodorus spp.) associated with ‘Docking disorder’ of sugar beet (Beta vulgaris L.), in field rotations with cover crops in East England

open access: yesAnnals of Applied Biology, EarlyView.
This study evaluated the population dynamics of stubby root nematodes (SRN) in field rotations with cover crops and the subsequent effect of this rotation on sugar beet quality and quantity attributes. It was clear that the SRN densities under field conditions are influenced by multiple factors, such as the type of cover crops grown, soil disturbance ...
Nyambura G. Mwangi   +6 more
wiley   +1 more source

Interactions between Behaviour and Genetics in Wild and Domestic Bird Populations [PDF]

open access: yes
Personality traits can be favoured by both natural and artificial selection, if they result in increased fitness or productivity, and therefore play an important role in both wild and domestic populations.
Oers, K., van, Rodenburg, T.B.
core   +1 more source

Thermal Environment, Ammonia Concentrations, and Ammonia Emissions of Aviary Houses with White Laying Hens [PDF]

open access: yes, 2013
Maintaining comfortable thermal environments and good indoor air quality is essential to ensuring optimal production performance, welfare, and health of animals.
Hayes, Morgan   +6 more
core   +2 more sources

Aging‐Associated Vacuolation of Multi‐Ciliated Cells in the Distal Mouse Oviduct Reflects Unique Cell Identity and Luminal Microenvironment

open access: yesAging Cell, EarlyView.
Multi‐ciliated cells in the infundibulum and ampulla (INF/AMP) epithelium are vacuolated in aging. Unique cellular susceptibility of the INF/AMP epithelial population and aging‐associated decline in ovarian artery circulation, which supports the ovary and INF/AMP, contribute to this region‐specific vacuolation phenotype, as a consequence of a mildly ...
Keerthana Harwalkar   +10 more
wiley   +1 more source

Moisture Production of A Commercial Laying Hen House with Manure Belt [PDF]

open access: yes, 2005
Moisture Production rate (MP) from animals and their housing components provide fundamental data for the engineering design of a building environmental control system.
Li, Hong   +3 more
core   +2 more sources

Cross‐Analysis of Single‐Cell Transcriptomic Datasets Reveals Conserved Neurogenic Gene Signatures and New Insights Into Neural Stem Cell Aging

open access: yesAging Cell, EarlyView.
Here, we reanalyze single‐cell RNA sequencing datasets demonstrating hippocampal adult neural stem cell (NSC) heterogeneity to resolve classification inconsistencies and identify conserved gene markers. Our findings enhance understanding of NSC dynamics, aging, and senescence, providing a framework for standardized classification and improved insights ...
Oliver Polzer   +4 more
wiley   +1 more source

Effects of restricted methionine and energy intake on egg weight and shell quality : research note

open access: yesAgricultural and Food Science, 2008
An experiment involving two laying hen hybrids and four dietary treatments was conducted to study the effects of dietary methionine restriction (MR) (3,05 g/kg, MR 100MR did not significantly affect hen-day production (%) but reduced linearly ...
T. KIISKINEN, E. HELANDER
doaj  

Bioavailability of Tryptophan Biomass for Laying Hens

open access: yesAnimals
Two concurrent assays were conducted with the objective of evaluating the bioequivalence and determining the relative bioavailability value (RBV) of L-tryptophan biomass 60% for laying hens. In both assays, L-tryptophan 98% was used as the reference source. A total of 216 hens were used in the two assays.
Stéphane Cristyne O. Estevão   +11 more
openaire   +3 more sources

Border fortification and legibility: Evidence from Afghanistan

open access: yesAmerican Journal of Political Science, EarlyView.
Abstract States often fortify their borders against militant threats. How do these efforts shape civilian welfare and perceptions in borderland communities? I conceptualize border fortification as a legibility‐building endeavor. By bolstering state reach in areas of weak historical penetration, fortification enhances the government's capacity for ...
Christopher W. Blair
wiley   +1 more source

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