Abstract: In a hog production plant the hogs are divided into a series of separate pens within the hog plant based generally on weight such that the lightest hogs closest to the initial weight are arranged in the first pen when the arrive and the heaviest hogs closest to the final market weight are arranged in the last pen. Each pen includes a sorting scale arranged to receive a hog therein and to weigh the hog for selection of one of two outlet paths leading to the next pen of the series or, in respect of the last pen, to a discharge location.

Abstract: A farrowing crate is defined by a cage having a main central flooring section for the sow and two side sections for the piglets. A feeder is located at the front wall for supplying feed to the sow when standing and includes a hopper mounted on a front gate outside the crate for and a trough for receiving feed discharged from the hopper. The trough is formed by a base plate lying substantially flat on the flooring from the hopper rearwardly to a raised transverse restricting member to restrict the escape of feed formed by an inverted V-shaped rib formed in the base plate spaced from the front wall and extending generally across the base plate to define a trough area of a height which allows the sow to lie with its neck and head over the restricting member without discomfort. The gate panel includes guards each side of the opening to restrict side to side movement of the sow's head. The trough is restricted by sides at the sides of the sow flooring.

Abstract: A farrowing crate is defined by a cage having a main central flooring section fro the sow and two side sections for the piglets. A feeder is located at the front wall for supplying feed to the sow when standing and includes a hopper mounted on a front gate outside the crate for and a trough for receiving feed discharged from the hopper. The trough is formed by a base plate lying substantially flat on the flooring from the hopper rearwardly to a raised transverse restricting member to restrict the escape of feed formed by an inverted V-shaped rib formed in the base plate spaced from the front wall and extending generally across the base plate to define a trough area of a height which allows the sow to lie with its neck and head over the restricting member without discomfort. The gate panel includes guards each side of the opening to restrict side to side movement of the sow's head. The trough is restricted by sides at the sides of the sow flooring.

Abstract: An animal feeder includes a hopper above a shelf onto which feed can fall to be taken by the animal or dropped into a trough below the shelf. The height of the shelf is adjustable to change the width of the opening through which the feed passes to control feed rate. The shelf is carried on straps which extend along the end walls of the hopper and are movable by an adjustment linkage defined by a plate carried on the end wall and a manually adjustable lever mounted for pivotal movement on the plate. The plate has an arcuate outer edge which is serrated to define an arcuate row of saw teeth and the lever is formed by a flat of sheet material which lies in a plane parallel to and slides over the plate and includes a portion thereof which is bent out of a plane of the lever into the plane of the plate which is also serrated with a row of saw teeth shaped to mesh with the saw teeth of the arcuate portion.

Abstract: An animal feeder includes a hopper above a shelf onto which feed can fall to be taken by the animal or dropped into a trough below the shelf. The height of the shelf is adjustable to change the width of the opening through which the feed passes to control feed rate. The shelf is carried on straps which extend along the end walls of the hopper and are movable by an adjustment linkage defined by a plate carried on the end wall and a manually adjustable lever mounted for pivotal movement on the plate. The plate has an arcuate outer edge which is serrated to define an arcuate row of saw teeth and the lever is formed by a flat of sheet material which lies in a plane parallel to and slides over the plate and includes a portion thereof which is bent out of a plane of the lever into the plane of the plate which is also serrated with a row of saw teeth shaped to mesh with the saw teeth of the arcuate portion.

Abstract: In a farrowing pen which includes a pit and over the pit a first floor portion on which the sow can stand and lie and two further floor portions on each side of the first floor portion for receiving piglets of the sow and confining walls for locating the sow on the first floor portion there is provided an apparatus for lifting the sow away from the piglets to prevent crushing. The apparatus includes a base carries above the pit on a cradle and a gas bag lift mechanism carried on the base above the manure and arranged to raise a plate carrying two parallel rails with the first floor portion thereon. An air valve extends through the flooring and is operated by pressure from contact with the sow for actuating the controlling the flow of the air. The rate of lifting is faster than the rate of lowering. A scissors lever arrangement mounted on the base above the pit acts to support and guide the floor on the bag.

Abstract: A tattoo mark is applied to a hog prior to sending the hog to market within a sorting cage with a weigh scale for detecting a weight of the hog and a sorting gate operated by a control unit in response to the detected weight. The mark is applied by a tattoo head having marking members thereon by which impact of the tattoo head on the skin of the hog applies a tattoo mark to the skin and a drive mechanism for driving movement of the tattoo head from a retracted position to an operating position for impacting the skin, the drive mechanism being mounted on a mounting assembly separate from and attached to the confining cage at the confining cage. The control unit is arranged, in response to the determination of a hog weight above the predetermined limit, to operate the drive mechanism to apply the tattoo head to the skin to apply the mark to the hog for market while operating the gate to release the hog to the market pen.

Abstract: Hatchlings are raised initially on a strip of sheet material which is laid on the floor of a containment pen with a layer of a feed material for the hatchlings. After the hatchlings have grown to a stage where they can move from the paper, the strip is removed by a hand cart operable by a user walking with the cart, the hand cart having wheels arranged for hand steering movement of the vehicle by the user to follow the strip while avoiding the hatchlings. A support is provided on the vehicle for winding the strip into a roll as the cart is moved across the floor. The support is rotated either by a motor or by a hand crank controlled by the user so that the cart is propelled solely by the winding of the strip onto the roll providing a pulling action on the cart and by pushing by the user. Alternatively the roll is driven by frictional contact with the ground wheels so that it rolls up the strip at a rate dependent on the forward movement of the cart.

Abstract: In a farrowing pen which includes a pit and over the pit a first floor section on which the sow can stand and lie and two further floor sections on each side of the first floor section for receiving piglets of the sow and confining walls for locating the sow on the first floor section there is provided an apparatus for lifting the sow away from the piglets to prevent crushing. The apparatus includes a base carries above the pit either on legs or on a cradle and a gas bag lift mechanism carried on the base above the manure and arranged to raise a plate carrying two parallel rails with the first floor section thereon. An air valve extends through the flooring and is operated by pressure from contact with the sow for actuating the controlling the flow of the air. The rate of lifting is faster than the rate of lowering. Extendible legs around the base support and guide the floor on the bag.

Abstract: A method of storing semen includes a series of carrying trays mounted on a rack mounted within a refrigerated container. Each tray supports a plurality of tubes containing the semen with the tubes having a main body being cylindrical in shave. The rack is arranged to store the samples in a manner such that the samples are continuously mixed. The rack provides movement to the tubes for mixing. The housing may rotate about an axis such that the tubes are moved about the axis or the housing may tilt the tubes such that the sample mixes that samples end to end. The tubes can be removed from the rack on the trays for use.

Abstract: In a farrowing pen which includes a pit and over the pit a first floor section on which the sow can stand and lie and two further floor sections on each side of the first floor section for receiving piglets of the sow and confining walls for locating the sow on the first floor section there is provided an apparatus for lifting the sow away from the piglets to prevent crushing. The apparatus includes a base carries above the pit either on legs or on a cradle and a gas bag lift mechanism carried on the base above the manure and arranged to raise a plate carrying two parallel rails with the first floor section thereon. An air valve extends through the flooring and is operated by pressure from contact with the sow for actuating the controlling the flow of the air. The rate of lifting is faster than the rate of lowering. Extendible legs around the base support and guide the floor on the bag.

Abstract: An animal in a pen is fed by a drop tube from a raised supply system to a position at or adjacent the floor or a trough at the floor. A spout at the bottom of the drop tube extends at an angle to the tube for discharging the feed in a direction to one side of the drop tube depending upon an angular orientation of the drop tube about a vertical axis of the drop tube. A clamp for attaching the drop tube to the wall of the pen includes co-operating indexing adjustment components including a stud mounted on the tube and grooves in the top surface of the clamping band which can be adjusted to provide a plurality of indexed angular orientations of the tube about the axis for locating the direction of discharge of the spout at specific indexed locations relative to the trough.

Abstract: A boar cart for carrying a boar through alleyways of a sow insemination area for interaction with the sows during insemination is formed by a cage for containing the boar including a cage floor on which the boar stands, two sides each defined by vertical bars on a respective side of a longitudinal center line of the cage assembly for confining the boar so that the boar is maintained extending longitudinally of the cage, a front and a rear defined by vertical bars, at least one of which can be opened as a door to allow entry and exit. The cage is mounted on rear driving wheels and front steering/caster wheels. The cage is defined by a front portion and a rear portion connected together for pivotal articulated movement about one or two pivot couplings defining a vertical pivot axis arranged substantially at the center line such that the cage can articulate to the left and to the right for navigating left and right corners in the alleyways while the boar is retained in the cage.

Abstract: Animals such as pigs which are free to otherwise roam in an alley are confined in the alley against movement past a gate assembly which includes a base with remotely steered and driven ground wheels for transporting the base along the alley floor between the alley sides. A planar barrier extending across the alley is carried by the base along the alley to a location where the animals are to be confined which has side edges shaped and arranged to co-operate with the alley sides and a bottom edge shaped and arranged to co-operate with the alley floor to close the alley against passage of the animals. The barrier can expand transversely to change its size to accommodate different width alleys and may have pivoting panel portions to close off non-vertical areas of the sides of the alley. A clamping arrangement is provided which may be on the barrier itself to engage the alley sides to clamp the gate assembly at the required position.

Abstract: A boar cart for carrying a boar through alleyways of a sow insemination area for interaction with the sows during insemination is formed by a cage for containing the boar including a cage floor on which the boar stands, two sides each defined by vertical bars on a respective side of a longitudinal center line of the cage assembly for confining the boar so that the boar is maintained extending longitudinally of the cage, a front and a rear defined by vertical bars, at least one of which can be opened as a door to allow entry and exit. The cage is mounted on rear driving wheels and front steering/caster wheels. The cage is defined by a front portion and a rear portion connected together for pivotal articulated movement about one or two pivot couplings defining a vertical pivot axis arranged substantially at the center line such that the cage can articulate to the left and to the right for navigating left and right corners in the alleyways while the boar is retained in the cage.

Abstract: A boar cart for carrying a boar through alleyways of a sow insemination area for interaction with the sows during insemination is formed by a cage for containing the boar including a cage floor on which the boar stands, two sides each defined by vertical bars on a respective side of a longitudinal center line of the cage assembly for confining the boar so that the boar is maintained extending longitudinally of the cage, a front and a rear defined by vertical bars, at least one of which can be opened as a door to allow entry and exit. The cage is mounted on rear driving wheels and front steering/caster wheels. The cage is defined by a front portion and a rear portion connected together for pivotal articulated movement about one or two pivot couplings defining a vertical pivot axis arranged substantially at the center line such that the cage can articulate to the left and to the right for navigating left and right corners in the alleyways while the boar is retained in the cage.

Abstract: A gate and gate post assembly is provided for use with animal containment pens. The assembly includes a pair of upright posts arranged to be supported spaced apart, each post having an upper support flange adjacent a top end and a lower support flange adjacent a bottom end. A gate is arranged to be supported on the posts in an upright orientation. The gate has a pair of upper mounting pins extending downward from respective sides of the gate adjacent a top end of the gate and a pair of lower mounting pins extending downward from respective sides of the gate adjacent a bottom end of the gate. The upper and lower mounting pins are arranged for slidably engaging into respective apertures in the upper and lower support flanges. A pair of latches, each in the form of a pendulum, are provided for pivotally mounting onto the respective sides of the gate.

Abstract: A biological sample storage rack comprises a housing, a plurality of tubes containing the biological sample are located at the housing, the tubes having a main body being cylindrical in shape. The housing is arranged to store the samples in a manner such that the samples are continuously mixed. The housing provides movement to the tubes for mixing. The housing may rotate about an axis such that the tubes are moved about the axis or the housing may tilt the tubes such that the sample mixes the samples end to end.

Abstract: A two sided feeder for feeding animals while the animals grow from a first smaller size to a second larger size comprises a trough having two opposed outwardly inclined front walls over which the animals can reach for taking feed from the trough and a feed hopper for discharging feed downwardly into the trough. The height of each front wall is adjustable by a hinged or removable supplementary portion to accommodate the different size animals. A shelf is provided above the trough onto which the feed is deposited. The height of the shelf is also adjustable. The hopper includes two vertical side walls defining a lower neck each having a lowermost edge adjacent the shelf for controlling deposit of material onto the shelf so that it remains on the shelf unless moved to the trough by the animal. The neck is supplemented by a clamped insert portion when the shelf is moved to its lower height.

Abstract: A slat for forming a flooring structure for a hog pen and particularly the area under the sow in a farrowing crate is rectangular with side edges which abut side edges of adjacent slats to align the slats in a row. Each side edge has tabs projecting outwardly to interlock above or below tabs on the next adjacent slat to prevent lifting of the slats. The length of the slat is greater than 24 inches so that it can sit with its ends on top of an existing flooring spaced at exactly 24 inches. The slats can be supported on and held in place against longitudinal movement relative to edges of an underlying flooring by inter engaging strip elements which engage onto castellated members on the edge of the underlying flooring and include upstanding flanges which stand up under the edges of the slats to hold the slats above the flooring.