A Descriptive Study of Keel Bone Fractures in Hens and Roosters from Four Non-Commercial Laying Breeds Housed in Furnished Cages
Abstract
:Simple Summary
Abstract
1. Introduction
2. Materials and Methods
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Breed | Classification | Origin 1 | Onset of Lay, in Weeks 2 |
---|---|---|---|
Icelandic landrace | Egg layer | The native breed of Iceland, originating from Old Norwegian Jadar 3. Not cultivated for specific characteristics | 22 |
NorBrid 8 | Egg layer | The paternal line of the last Norwegian, commercial layer hybrid, NorBrid 87. Descends from Red Rhode Island | 15 |
Minorca | Egg layer | Developed in England from imported Castilian fowl | 22 |
Roko | Egg layer | The oldest existing purebred line in Norway. Originated from White Leghorn 4 | 16 |
Breed | Examination, 30 Weeks of Age | Examination, 63 Weeks of Age | ||||||
---|---|---|---|---|---|---|---|---|
Females | Females with Fractures | Roosters * | Females | Females with Fractures 2 | Roosters * | |||
n | n | % | n | n3 | n | % | n | |
Icelandic landrace | 24 | 0 | 0 | 4 | 19 4 | 0 | 0 | 4 |
Norbrid 8 | 24 | 2 | 8.3 | 4 | 20 5 | 2 | 10 | 4 |
Minorca | 24 | 1 | 4.2 | 4 | 29 6 | 0 | 0 | 4 |
Roko | 24 | 0 | 0 | 4 | 17 7 | 0 | 0 | 4 |
Total | 96 | 3 | 3.1 | 16 | 85 | 2 | 2.4 | 16 |
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Kittelsen, K.E.; Moe, R.O.; Hansen, T.B.; Toftaker, I.; Christensen, J.P.; Vasdal, G. A Descriptive Study of Keel Bone Fractures in Hens and Roosters from Four Non-Commercial Laying Breeds Housed in Furnished Cages. Animals 2020, 10, 2192. https://doi.org/10.3390/ani10112192
Kittelsen KE, Moe RO, Hansen TB, Toftaker I, Christensen JP, Vasdal G. A Descriptive Study of Keel Bone Fractures in Hens and Roosters from Four Non-Commercial Laying Breeds Housed in Furnished Cages. Animals. 2020; 10(11):2192. https://doi.org/10.3390/ani10112192
Chicago/Turabian StyleKittelsen, Käthe Elise, Randi Oppermann Moe, Tone Beate Hansen, Ingrid Toftaker, Jens Peter Christensen, and Guro Vasdal. 2020. "A Descriptive Study of Keel Bone Fractures in Hens and Roosters from Four Non-Commercial Laying Breeds Housed in Furnished Cages" Animals 10, no. 11: 2192. https://doi.org/10.3390/ani10112192