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The ability of laying pullets to negotiate two ramp designs as measured by bird preference and behaviour
BACKGROUND: Laying hens are often kept in barn or free-range systems where they must negotiate level changes in the house to access resources. However, collisions and resultant keel fractures are commonplace. Producers sometimes add ramps to make raised areas more accessible but designs vary and ver...
| Autores principales: | , , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
PeerJ Inc.
2017
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5701544/ https://www.ncbi.nlm.nih.gov/pubmed/29177116 http://dx.doi.org/10.7717/peerj.4069 |