Accès ouvert
2025
article
OpenAlex
Jackie Ouzman, Dana L. M. Campbell, D. J. MOWAT, Jim M. Lea et autres
Context Advancements in agricultural technologies for animal management such as virtual fencing have applications in crop–livestock mixed farming systems. Targeted control of grazing cattle could, for example, improve weed management or optimise groundcover to mitigate erosion risk. Aims This research applied the …
au
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
Dana L. M. Campbell, Sue Belson, Jim M. Lea, Jackie Ouzman et autres
Virtual fencing technology uses on-animal devices to communicate boundaries via a warning audio tone and electrical pulse signals. There is currently limited validation work on sheep. This study used modified cattle eShepherd® virtual fencing neckbands on reduced-wool sheep with clipped necks to …
au
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
Emily J. Dickson, Dana L. M. Campbell, Caroline Lee, Jim M. Lea et autres
Environmental enrichment can improve livestock welfare through increasing environmental complexity to promote a greater range of natural behaviours. However, there is limited understanding of the need for and impacts of enrichments for extensively managed beef cattle that can sometimes be kept in …
au
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
Dana L. M. Campbell, Sue Belson, Marisa A. Erasmus, Jim M. Lea
Ducks will access water to maintain feather condition and exhibit natural water-related behaviors such as wet preening. Providing water to ducks commercially is challenging as it may reduce litter and air quality leading to higher duck mortality or illness. This research aimed …
au, us
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
Emily J. Dickson, Dana L. M. Campbell, Jessica E. Monk, Jim M. Lea et autres
Public scrutiny surrounds the intensive feedlot finishing of beef cattle, likely due to the assumption that cattle cannot perform their full repertoire of natural behaviours. However, it is not well-known how certain aspects of the environment influence both cattle perception of a …
au
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
Md Sohel Rana, Caroline Lee, Jim M. Lea, Dana L. M. Campbell
In Australia, summer brings intense, bright sunlight with high ultraviolet (UV) radiation and hot temperatures, which might impact free-range hens' ranging outside. To determine how range use was correlated with different sunlight variables and weather factors, a study was carried out on …
au, bd
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
Md Sohel Rana, Caroline Lee, Jim M. Lea, Dana L. M. Campbell
Extreme sunlight might be aversive to free-range laying hens, discouraging them from going outside. Range enrichment with artificial shelters may protect hens from sunlight and increase range use. The preferences of 34–40-week-old Hy-Line Brown laying hens for artificial shelters were assessed by …
au, bd
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
Dana L. M. Campbell, Sue Belson, Tim R. Dyall, Jim M. Lea et autres
Enrichment during the indoor rearing of pullets destined for free-range systems may optimize pullet development including increasing motivated natural behaviors (termed ‘positive behaviors’) including foraging, dust bathing and chick play. Hy-Line Brown® chicks (n = 1700) were floor-reared indoors across 16 weeks …
au
(code pays fourni par la source)
Accès ouvert
2021
article
OpenAlex
Dana L. M. Campbell, Danila Marini, Jim M. Lea, Hamideh Keshavarzi et autres
Context Herding and mustering procedures during livestock management can be time-consuming, labour intensive, and costly. The ability to gather animals virtually is an enticing notion but technology to do this is not widely commercially available. Aims The eShepherd® virtual fencing system being …
au
(code pays fourni par la source)
Accès ouvert
2020
article
OpenAlex
Hamideh Keshavarzi, Caroline Lee, Jim M. Lea, Dana L. M. Campbell
Group-living can be socially advantageous where the behavior of individuals may be modified by group members through socially facilitative processes. Virtual fencing contains cattle by providing audio and electrical signals via a neckband device. However, little is known about social influences on …
au
(code pays fourni par la source)
Accès ouvert
2020
article
OpenAlex
Haocheng Xu, Shenghong Li, Caroline Lee, Wei Ni et autres
Understanding social interactions in livestock groups could improve management practices, but this can be difficult and time-consuming using traditional methods of live observations and video recordings. Sensor technologies and machine learning techniques could provide insight not previously possible. In this study, based …
au
(code pays fourni par la source)
Accès ouvert
2020
article
OpenAlex
Dana L. M. Campbell, Jackie Ouzman, D. J. MOWAT, Jim M. Lea et autres
The eShepherd® virtual fencing system being commercialized for cattle has the potential to exclude cattle from environmentally sensitive areas. Animals are given audio cues to indicate a fence line via a neckband device. An electrical pulse is administered if the animal continues …
au
(code pays fourni par la source)