Results 41 to 50 of about 267,581 (312)

Midbrain PAG Astrocytes Modulate Mouse Defensive and Panic‐Like Behaviors

open access: yesAdvanced Science, EarlyView.
Astrocytes in the midbrain periaqueductal gray (PAG) dynamically encode threat intensity and shape defensive action selection in mice. Real‐time Ca2+ imaging reveals robust astrocytic activation during predator odor and CO2 exposure. Aberrant astrocytic Ca2+ overactivation disrupts goal‐directed escape, biases behavior toward freezing, and induces ...
Ellane Barcelon   +10 more
wiley   +1 more source

Uniformidade de picado processado por colhedora de forragem Uniformity of green matter processed by forage harvester

open access: yesEngenharia Agrícola, 2010
A ensilagem de plantas é prática comum no Brasil, onde se busca o armazenamento de alimentos com altos teores de energia, provenientes de plantas forrageiras para utilização em períodos de escassez.
José F Schlosser   +4 more
doaj   +1 more source

The Florida Harvester Ant, Pogonomyrmex badius, Relies on Germination to Consume Large Seeds. [PDF]

open access: yesPLoS ONE, 2016
The Florida harvester ant, Pogonomyrmex badius, is one of many ant species and genera that stores large numbers of seeds in damp, underground chambers for later consumption. A comparison of the sizes of seeds recovered from storage chambers with those of
Walter R Tschinkel, Christina L Kwapich
doaj   +1 more source

Primary Mechanical Modification to Improve Performance of Miscanthus as Stand-Alone Growing Substrates

open access: yesAgronomy, 2022
Selecting proper mechanical processing can improve performance of miscanthus substrates. We studied the effects of mechanical processing methods on substrate morphology, hydrological properties, pH, and nitrogen immobilization.
Van T. H. Nguyen   +5 more
doaj   +1 more source

The Application of Harvester -Mounted Forage Yield Sensing Devices. [PDF]

open access: yes, 2001
End of Project ReportThe development and application of precision agriculture technology to forage crops offers scope for improved management practices and targeting of inputs.
Forristal, P.D., Keppel, D.
core  

2023–2027 CAP First Pillar Reform and Livestock Sector: Production and Economic Impacts on Italian Specialized Dairy Cattle Farms

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT The present study uses an agroeconomic supply model to assess the impacts of 2023–2027 CAP on Italian specialized dairy cattle farms. The model considers the voluntary choice of Eco‐Scheme 1, specifically addressed to livestock farms, through the implementation of binary variables.
Davide Dell'Unto, Raffaele Cortignani
wiley   +1 more source

Anaerobic Storage Characteristics of Whole-Ear Corn and Stover

open access: yesAgriEngineering, 2023
Whole-plant corn has been previously investigated as a biomass feedstock. Current approaches are analogous to harvesting whole-plant corn for livestock feed or biogas production.
Adam B. Hemmelgarn   +3 more
doaj   +1 more source

Livestock Tango: U.S. and Latin America Dance Together, but Who Will Lead?

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT This study examines the competitiveness between Latin American and U.S. livestock and meat sectors. We employ a computable general equilibrium modeling framework to evaluate two scenarios: coordinated improvements in Latin American productivity, transport efficiency, and market access (Scenario I), and the minimum productivity gains required ...
Taís C. Menezes   +2 more
wiley   +1 more source

Estimation of Biomass and Canopy Height in Bermudagrass, Alfalfa, and Wheat Using Ultrasonic, Laser, and Spectral Sensors

open access: yesSensors, 2015
Non-destructive biomass estimation of vegetation has been performed via remote sensing as well as physical measurements. An effective method for estimating biomass must have accuracy comparable to the accepted standard of destructive removal.
Jeremy Joshua Pittman   +4 more
doaj   +1 more source

2002 Kansas Performance Tests with Alfalfa Varieties [PDF]

open access: yes, 2002
The Kansas Agricultural Experiment Station established an official alfalfa performance testing program in 1980 to provide Kansas growers with unbiased performance comparisons on alfalfa varieties marketed in the state.
Roozeboom, Kraig L.
core   +1 more source

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