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Christina Barbara Rufener
University of Bern
6Publications
3H-index
15Citations
Publications 6
Newest
#1Sabine G. Gebhardt-Henrich (University of Bern)H-Index: 14
#2Christina Barbara Rufener (University of Bern)H-Index: 3
Last.Ariane Stratmann (University of Bern)H-Index: 5
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Source
#1Ana Katinka Rentsch (University of Bern)
#2Christina Barbara Rufener (University of Bern)H-Index: 3
Last.Michael J. Toscano (University of Bern)H-Index: 18
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Abstract Keel bone fractures (KBF) in laying hens pose a severe problem for animal welfare as they are likely to be associated with pain and suffering. Furthermore, they are suspected to hinder or restrict hens in their performance of natural species-specific behaviour. The aim of this study was to determine whether KBF affect laying hen behaviour in a non-cage system and whether this alteration is caused by pain. Forty Brown Nick and 40 Nick Chick hens were individually marked, and video record...
Source
#1Christina Barbara Rufener (University of Bern)H-Index: 3
#2Sarah Dorothea Baur (University of Bern)H-Index: 2
Last.Michael J. Toscano (University of Bern)H-Index: 18
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The aim of this study was to investigate the effect of keel bone fracture (KBF) severity and healing activity on individual productivity of laying hens. Focal hens (75 Lohmann Selected Leghorn (LSL), 75 Lohmann Brown (LB)) were housed alongside non-focal hens in 10 identical pens containing a commercial aviary system (15 focal hens per pen). Eggs of focal hens were identified by orally administering a dye on 3 consecutive days, resulting in a hen-specific color pattern in the yolk. Eggs were col...
2 CitationsSource
#1Christina Barbara Rufener (University of Bern)H-Index: 3
#2John Berezowski (University of Bern)H-Index: 5
Last.Michael J. Toscano (University of Bern)H-Index: 18
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We sought to objectively quantify and compare the recorded movement and location patterns of laying hens within a commercial system. Using a custom tracking system, we monitored the location within five zones of a commercial aviary for 13 hens within a flock of 225 animals for a contiguous period of 11 days. Most hens manifested a hen-specific pattern that was (visually) highly consistent across days, though, within that consistency, manifested stark differences between hens. Three different met...
4 CitationsSource
#1Christina Barbara Rufener (University of Bern)H-Index: 3
#2Sarah Dorothea Baur (University of Bern)H-Index: 2
Last.Michael J. Toscano (University of Bern)H-Index: 18
view all 4 authors...
Up to 97 % of laying hens housed in aviary systems are affected by keel bone fractures. Due to the scope of the problem, multiple efforts investigating causes and consequences of fractures have been conducted. The most frequently used techniques to detect fractures lack accuracy and provide only vague information (palpation) or cannot be conducted longitudinally (dissection). Radiographic imaging overcomes these weaknesses as it allows longitudinal observations and provides detailed information ...
3 CitationsSource
#1Laura Candelotto (University of Bern)H-Index: 1
#2Ariane Stratmann (University of Bern)H-Index: 5
Last.Michael J. Toscano (University of Bern)H-Index: 18
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Keel bone fractures are a well-known welfare problem in modern commercial laying hen systems. The present study sought to identify genetic variation in relation to keel bone fracture susceptibility of 4 distinct crossbred and one pure line, and by extension, possible breeding traits. Susceptibility to fractures were assessed using an ex vivo impact testing protocol in combination with a study design that min- imized environmental variation to focus on genetic differences. The 5 crossbred/pure li...
6 CitationsSource
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