Zobrazeno 1 - 10
of 452
pro vyhledávání: '"L.M. Campbell"'
Autor:
Emily J. Dickson, Jessica E. Monk, Caroline Lee, Paul G. McDonald, Edward Narayan, Dana L.M. Campbell
Publikováno v:
Animal, Vol 18, Iss 3, Pp 101091- (2024)
Pasture-based beef cattle are raised in a range of production environments. Some paddocks may contain trees and other objects that allow for grooming, hence being naturally enriching, whilst others may be barren without these opportunities. Additiona
Externí odkaz:
https://doaj.org/article/5a6ae4d6d56048ee997bee6aa3950f78
Publikováno v:
PeerJ, Vol 11, p e15092 (2023)
Studies in humans have shown sex differences in response to painful events, however, little is known in relation to sex differences in sheep. Understanding sex differences would enable improved experimental design and interpretation of studies of pai
Externí odkaz:
https://doaj.org/article/bdac707d4a2b4377b5a8f349f5c91c60
Publikováno v:
PeerJ, Vol 11, p e14997 (2023)
Chicken vision is sensitive to ultraviolet (UV) light containing the UVA spectrum, while UVB plays a key role in the endogenous production of vitamin D3. However, commercially available light sources are typically deficient in the UV spectrum and thu
Externí odkaz:
https://doaj.org/article/c93bda4f491c4ecfb8444c06ee2cf625
Publikováno v:
Poultry Science, Vol 99, Iss 10, Pp 4672-4684 (2020)
Different strains of commercial laying hens have been molded by varying selection pressures, impacting their production, health, and behavior. Therefore, assumptions that all laying hen strains use the given resources within aviary systems similarly
Externí odkaz:
https://doaj.org/article/045b4fca13da4063b6735d062872355c
Publikováno v:
Poultry Science, Vol 100, Iss 6, Pp 101063- (2021)
Sunlight intensity and UV radiation may affect free-range hens' use of the outside range, particularly when sunlight is intense with a high UV index. However, it is uncertain what aspect of sunlight (brightness or UV) may be most aversive to hens to
Externí odkaz:
https://doaj.org/article/86a10339b12949d3a2735b96abd9358d
Publikováno v:
Animal Production Science. 63:523-534
The affective states of animals comprise a key aspect of welfare that can be difficult to assess. An attention-bias test was developed for sheep, which assessed allocation of attention between a predator threat and a food reward, as a potential measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74fe83712da17b27d11f2905b0948d49
https://doi.org/10.1071/an22260
https://doi.org/10.1071/an22260
Autor:
Md Saiful Bari, Yan C.S.M. Laurenson, Andrew M. Cohen-Barnhouse, Stephen W. Walkden-Brown, Dana L.M. Campbell
Publikováno v:
PeerJ, Vol 8, p e8720 (2020)
In Australia, free-range layer pullets are typically reared indoors, but adult layers go outdoors, and this mismatch might reduce adaptation in laying environments. Enrichments during rearing may optimise pullet development and subsequent welfare as
Externí odkaz:
https://doaj.org/article/1d9bbc63ba4b49d08c69689637f7efc4
Autor:
Isabelle Ruhnke, Camille Normant, Dana L.M. Campbell, Zafar Iqbal, Caroline Lee, Geoff N. Hinch, Julie Roberts
Publikováno v:
Animal Nutrition, Vol 4, Iss 4, Pp 452-460 (2018)
Semi-intensive free-range farm systems are common in Australia, and these systems frequently practise on-range feeding. The objective of this study was to investigate the benefit of on-range choice feeding on flock performance, egg quality, and range
Externí odkaz:
https://doaj.org/article/b3d5af7518d84afebfe0c368c14c9ae7
Publikováno v:
PeerJ, Vol 7, p e8122 (2019)
Assessment of negative affective states is a key component of animal welfare research. In laying hens, excessive fearfulness results in reduced production and increased sensitivity to stress. Fearfulness can be defined as a response to a known threat
Externí odkaz:
https://doaj.org/article/37d456def87346009a1f93b5eda30caa
Autor:
Dana L.M. Campbell, Peta S. Taylor, Carlos E. Hernandez, Mairi Stewart, Sue Belson, Caroline Lee
Publikováno v:
PeerJ, Vol 7, p e7303 (2019)
Fear is a response to a known threat, anxiety is a response to a perceived threat. Both of these affective states can be detrimental to animal welfare in modern housing environments. In comparison to the well-validated tests for assessing fear in lay
Externí odkaz:
https://doaj.org/article/0f471eb5d1e3408693cb4295975eba78