| 摘要 |
Feed dispenser has opening at bottom surrounded by a seat upon which a ball check is adapted to rest, thereby to seal the opening and prevent the discharge of feed. Feed lever secured to ball check can be nudged upwardly by swine to elevate ball check to unseal opening, and can be nudged laterally by piglet to rotate ball check on the seat so that a crevice in the ball check can be brought below opening to drop feed into feed pit.
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