| Autor: |
Donald G. Levis, Gerald R. Bodman, Duane Reese |
| Rok vydání: |
1987 |
| Předmět: |
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| Zdroj: |
Applied Engineering in Agriculture. 3:178-182 |
| ISSN: |
1943-7838 |
| DOI: |
10.13031/2013.26668 |
| Popis: |
TWO modified-open-front non-mechanically ventilat-ed farrowing houses with creep boxes were operated over a two year period. Annual energy requirements were in the range of 10.6 to 10.9 cents per crate per day. No adverse effects on pig performance were realized. In most instances pig performance exceeded national standards of excellent performance—survival rates in excess of 90% and 21-day pig weights of 5.9 to 6.8 kg (13 to 15 lb). The study verified that another alternative is available to producers who do not want additional mechanical equipment to operate and maintain. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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