scholarly journals Spatial Cognition and Range Use in Free-Range Laying Hens

Animals ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 26 ◽  
Author(s):  
Dana Campbell ◽  
Andrew Talk ◽  
Ziyang Loh ◽  
Tim Dyall ◽  
Caroline Lee
Keyword(s):  
Spatial Cognition ◽  
Laying Hens ◽  
Range Use ◽  
Free Range

scholarly journals Outdoor stocking density in free-range laying hens: radio-frequency identification of impacts on range use

animal ◽  
2017 ◽  
Vol 11 (1) ◽  
pp. 121-130 ◽  
Author(s):  
D.L.M. Campbell ◽  
G.N. Hinch ◽  
T.R. Dyall ◽  
L. Warin ◽  
B.A. Little ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Laying Hens ◽  
Stocking Density ◽  
Range Use ◽  
Free Range ◽  
Frequency Identification

scholarly journals Impact of on-range choice feeding with black soldier fly larvae (Hermetia illucens) on flock performance, egg quality, and range use of free-range laying hens

2018 ◽  
Vol 4 (4) ◽  
pp. 452-460 ◽  
Author(s):  
Isabelle Ruhnke ◽  
Camille Normant ◽  
Dana L.M. Campbell ◽  
Zafar Iqbal ◽  
Caroline Lee ◽  
...  
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Black Soldier Fly ◽  
Hermetia Illucens ◽  
Range Use ◽  
Free Range ◽  
Black Soldier Fly Larvae ◽  
Fly Larvae ◽  
Choice Feeding

Factors related to free-range use in commercial laying hens

2019 ◽  
Vol 214 ◽  
pp. 57-63 ◽  
Author(s):  
Monique Bestman ◽  
Cynthia Verwer ◽  
Thea van Niekerk ◽  
Ferry Leenstra ◽  
Berry Reuvekamp ◽  
...  
Keyword(s):  
Laying Hens ◽  
Range Use ◽  
Free Range

scholarly journals Managing Free-Range Laying Hens—Part B: Early Range Users Have More Pathology Findings at the End of Lay but Have a Significantly Higher Chance of Survival—An Indicative Study

Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1911
Author(s):  
Terence Zimazile Sibanda ◽  
Cormac J. O’Shea ◽  
Jessica de Souza Vilela ◽  
Manisha Kolakshyapati ◽  
Mitchell Welch ◽  
...  
Keyword(s):  
Pilot Study ◽  
Fatty Liver ◽  
Liver Diseases ◽  
Laying Hens ◽  
Range Use ◽  
Free Range ◽  
Farm Profitability

While free-range laying hens frequently experience health and welfare challenges, the contribution of range use towards these risks are largely unknown. The aim of this pilot study was to investigate the survival, health and welfare of commercial free-range laying hens and explore the association with early range use. Range use of 9375 Lohmann Brown hens housed within five flocks was assessed during 18–21 weeks of age and individual hens were classified as “rangers” (frequent range users), “roamers” (intermittent range users), and “stayers” (rare/no range users) were then subject to necropsy at 74 weeks of age. Rangers and roamers were three times and 2.4 times more likely to survive than stayers, respectively (p = 0.001). Overall, rangers had significantly better feather cover and more lesions associated with spotty liver diseases compared to roamers and stayers (p = 0.001). Similarly, rangers and roamers had a higher prevalence of A. galli infection and less frequent signs of fatty liver syndrome compared to stayers. Rangers had a higher proportion of hens with full ovary follicle production compared to stayers and roamers (p = 0.035). This information is highly relevant to consider the targeted support of different flock subpopulations to improve hen health and welfare, directly affecting farm profitability. Further research on other farms is warranted to investigate the transferability of the observed results.

scholarly journals Early rearing enrichments influenced nest use and egg quality in free-range laying hens

animal ◽  
2020 ◽  
Vol 14 (6) ◽  
pp. 1249-1257 ◽  
Author(s):  
M.S. Bari ◽  
A.M. Cohen-Barnhouse ◽  
D.L.M. Campbell
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Free Range ◽  
Early Rearing
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