Results 31 to 40 of about 44,113 (306)

Head-on collision of flocks

open access: yesВісник Харківського національного університету імені В.Н. Каразіна. Серія: Математичне моделювання, інформаційні технології, автоматизовані системи управління, 2022
Relevance. The study of the collective behavior of flocks of intelligent agents by using the mathematical and numerical methods is related to the multi-agent systems and artificial intelligence, which are actively researched nowadays. Goal.
Олексій Приймак   +1 more
doaj   +1 more source

Salmonella Prevalence in Turkey Flocks before and after Implementation of the Control Program in Germany

open access: yesAgriculture, 2013
The objective of the study was to describe the Salmonella prevalence in turkey flocks before and after the implementation of the Salmonella control program in Germany and to identify factors that are potentially associated with the presence of Salmonella
Bernd-Alois Tenhagen   +3 more
doaj   +1 more source

Rearing experience with ramps improves specific learning and behaviour and welfare on a commercial laying farm

open access: yesScientific Reports, 2021
To access resources in commercial laying houses hens must move between levels with agility to avoid injury. This study considered whether providing ramps during rear improved the ability of birds to transition between levels.
Kate I. Norman   +3 more
doaj   +1 more source

Mixed bird flocks: patterns of activity and species composition in a region of the Central Andes of Colombia

open access: yesRevista Mexicana de Biodiversidad, 2011
Mixed bird flocks are groups of individuals from different species that travel and forage together. Such groups are common in several bird communities around the world. We present species composition and activity patterns of mixed bird flocks in a region
Enrique Arbeláez-Cortés   +2 more
doaj   +1 more source

The usual suspects: Co-occurrence of integument injuries in turkey flocks. [PDF]

open access: yes, 2022
The present study investigated the prevalence and co-occurrence of integument injuries in Canadian turkeys. Participating farmers scored 30 birds in their flock for integument injuries to the head/neck (HN), back/tail (BT), and footpad (FP) using a ...
Baes, Christine F.   +12 more
core   +1 more source

Sero-Epidemiological Survey of Egg-Transmitted Bacterial Diseases in Broiler Breeder Flocks in Korea

open access: yesThe Journal of Poultry Science, 2014
The purpose of this study was to investigate the immune status or infection rates for primary egg-transmitted bacterial diseases such as pullorum disease-fowl typhoid (PD-FT), Mycoplasma gallisepticum (MG) infection, and Mycoplasma synoviae (MS ...
Jae-Keun Cho   +5 more
doaj   +1 more source

Flock fortress: biosecurity practices by backyard poultry keepers

open access: yesFrontiers in Animal Science
Backyard poultry biosecurity is crucial for protecting flock health and ensuring food safety. This study aimed to evaluate existing knowledge and practices related to biosecurity among backyard poultry farmers through a 1-day training intervention ...
Shivangi Patel   +8 more
doaj   +1 more source

High frequency of chlamydial co-infections in clinically healthy sheep flocks

open access: yesBMC Veterinary Research, 2011
Background The epidemiological situation of ovine chlamydial infections in continental Europe, especially Germany is poorly characterised. Using the German state of Thuringia as a model example, the chlamydial sero- and antigen prevalence was estimated ...
Sachse Konrad   +7 more
doaj   +1 more source

Allocentric Flocking

open access: yesNature Communications
Abstract Understanding how group-level dynamics arise from individual interactions re- mains a core challenge in collective behavior research. Traditional models assume that animals follow simple behavioral rules, like explicitly aligning with neighbors, yet experimental support for such interactions is often lacking. Here we consider a
Mohammad Salahshour, Iain D. Couzin
openaire   +4 more sources

Reporting Flock Patterns

open access: yesComputational Geometry, 2006
The authors discuss algorithms to detect flocks in moving objects. They start with a set of \(n\) identities in the plane and the position of the entities at time steps \(t_1,\dots, t_\tau\). It is supposed that these time steps are taken synchronously for all the identities and that the movement between the steps is linear at constant speed.
Marc Benkert   +3 more
openaire   +2 more sources

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