|
|
|
|
|
| Alm, M.; Tauson, R.; Wall, H.. |
| Feather pecking is still a behavioral problem in laying hen flocks, resulting in impaired welfare and economic losses. Environment enrichment, e.g., providing access to litter, to increase foraging behavior in laying hens has been shown to decrease feather pecking. This study investigated the effect of spreading crushed mussel shells (particle size 10 to 20 mm) in the litter area as an environment enrichment and source of calcium for layers receiving a commercial feed and for layers given a feed with 40% less calcium. These treatments were compared with a control involving hens given the commercial feed, but no mussel shells in the litter. The study included 900 Dekalb White layers housed in a single-tier floor system during a production cycle (20 to 72 wk... |
| Tipo: Journal paper |
Palavras-chave: Production systems; Health and welfare; Poultry. |
| Ano: 2016 |
URL: http://orgprints.org/31231/1/pfw056.pdf |
| |
|
|
| Tauson, R.; Alm, M.. |
| In order to improve the occupation rate in laying hens held in a single tier floor system, mussel shells (particle size 10-20 mm) were supplied in the litter on every day basis. However, this procedure did not result in any affect on birds’ feather cover, novel object reactions, nor other welfare parameters or production performance. In the present study, it was not possible to partly replace calcium supplementation in the diet with the access to crushed mussel shells. This reduced calcium supplementation in the feed resulted in significantly higher rates of keel bone deviations, lower shell breaking strength and lower dry matter content of feces and litter. |
| Tipo: Report |
Palavras-chave: Health and welfare. |
| Ano: 2014 |
URL: http://orgprints.org/27943/1/Tauson%20and%20Alm_2014_Mussel%20shells.pdf |
| |
|
|
|
