Farrowing pig pen

Details Farrowing pig pen Farrowing pig pen

1993-06-09

1994-12-13

Mancene, Gene

Animal husbandry

Bed or rest

A01K 102

Patent

active

053720911

ABSTRACT:
The invention relates to a pig farrowing pen and resides in directing air flows under the sow when standing to drive the piglets to a safe location and thereby prevent the piglets from being trapped and crushed as the sow moves from an elevated position to a lying position.
In one described embodiment an element (18) lies in the path of the sow as she rises and the element (18) is elevated as the sow moves to an elevated position. The element (18) carries an electrical switch (20), conveniently a tilt switch, which is closed as the element (18) is elevated by the sow and, on the switch (20) closing, a valve (24) is opened to direct pressure air flows under the sow. As the sow moves from an upright posit on towards a lying position the element (18) is lowered, the electrical switch (20) opens and the supply of pressure air is terminated.
In preferred embodiments the air supply may be pulsed and/or chilled to encourage the piglets to move from the danger zone beneath the sow.

REFERENCES:
patent: 3042000 (1962-07-01), McMurray
patent: 3181503 (1965-05-01), Tripp
patent: 3237600 (1966-03-01), Behrens et al.
patent: 4428324 (1984-01-01), Salminen

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