| Autor: |
G.I Christison, J.A deGooijer |
| Rok vydání: |
1986 |
| Předmět: |
|
| Zdroj: |
Livestock Production Science. 15:191-200 |
| ISSN: |
0301-6226 |
| DOI: |
10.1016/0301-6226(86)90027-8 |
| Popis: |
Three methods of evaluating the goodness of foothold of sows were compared: load hauling, standing and lying frequency while in farrowing crates, and foot movements while rising. Load hauling by harnessed sows was not a useful technique because experienced animals did not pull vigorously. Sows changed posture on the day after parturition half as often as they did before parturition or 7 days postpartum, but crate type or floor type had no effect on the standing or lying frequency. Foot movement of sows while rising was unaffected by farrowing crate type or crate width. Floors of plastic-coated expanded metal or concrete with concrete slats at the rear caused sows to move their hind feet a shorter distance and to take fewer foot movements while rising than did floors of fiberglass slats or perforated metal slats. The best method of evaluating the sureness of foothold of sows on farrowing crate floors was to determine the distance moved and the number of movements by the rear feet while in the act of rising. Because of the high correlation of these two variables, total movements was an adequate index. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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