WO1998041085A1 - Barriere pivotante pour stalle - Google Patents

Barriere pivotante pour stalle Download PDF

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Publication number
WO1998041085A1
WO1998041085A1 PCT/CA1998/000228 CA9800228W WO9841085A1 WO 1998041085 A1 WO1998041085 A1 WO 1998041085A1 CA 9800228 W CA9800228 W CA 9800228W WO 9841085 A1 WO9841085 A1 WO 9841085A1
Authority
WO
WIPO (PCT)
Prior art keywords
cow
gate bar
limit position
stall
horizontal portion
Prior art date
Application number
PCT/CA1998/000228
Other languages
English (en)
Inventor
Victor Rousseau
Léo ROUSSEAU
Original Assignee
Victor Rousseau
Rousseau Leo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Victor Rousseau, Rousseau Leo filed Critical Victor Rousseau
Publication of WO1998041085A1 publication Critical patent/WO1998041085A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K15/00—Devices for taming animals, e.g. nose-rings or hobbles; Devices for overturning animals in general; Training or exercising equipment; Covering boxes
    • A01K15/02—Training or exercising equipment, e.g. mazes or labyrinths for animals ; Electric shock devices ; Toys specially adapted for animals
    • A01K15/028—Cow trainers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00—Housing animals; Equipment therefor
    • A01K1/06—Devices for fastening animals, e.g. halters, toggles, neck-bars or chain fastenings
    • A01K1/062—Neck-bars, e.g. neck collars
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K15/00—Devices for taming animals, e.g. nose-rings or hobbles; Devices for overturning animals in general; Training or exercising equipment; Covering boxes
    • A01K15/04—Devices for impeding movement; Devices for impeding passage through fencing, e.g. hobbles or the like; Anti-kicking devices

Definitions

  • the present invention relates to gate bars for cattle stalls, and more particularly to a pivotable gate bar for cow stalls.
  • a trench or gutter is located at the rear end of cow stalls, in which it is desirable that the cow release its excrements instead of the stall floor, beneath the cow.
  • littered cow stall floors can result in the dug of the cow becoming filthy and possibly contaminated with feces-types bacteria, resulting in possibly contaminated milk - a health safety hazard for human consumers - since the cow can lie on the littered floor. Furthermore, this can eventually result in health problems for the cow itself.
  • Cows are usually allowed a certain displacement in their stalls, since the stall is sized to accomodate cows of different lengths.
  • a cow can usually move in its stall between a rearmost position, in which its hind portion is advantageously located over the gutter, and a frontmost position, in which the cow has lowered its head under the stall horizontal front stanchion rod to reach its food located on the other side of the stall stanchion.
  • the cow hind portion is located over the stall floor, away from the gutter.
  • the cow may release its excrements onto its stall floor.
  • the horizontal web portion of the U-shaped frame is destined to be located over the cow's back, slightly behind its shoulders, when the cow is in its frontmost position, with its head located under the stall rod.
  • the fixedly attached U-shaped frame of the Cameron invention would then prevent the cow from arching its back, as it physiologically must do before being able to release its excrements.
  • the cow would be effectively prevented from releasing its excrements, since it could not arch its back.
  • the U-shaped frame will effectively hinder the cow when it wants to move forward towards its food, beyond its stanchion.
  • the horizontal web and the horizontal stall rod both form a substantially horizontal area which is not accessible by the cow.
  • effective cow stall space is wasted.
  • US patent No. 1,512,610 issued in 1924 to J.W. Kolb shows another device for preventing cow stall littering by the cow.
  • a U-shaped frame is attached to brackets fixed to the cow stall stanchion so as to be pivotable between an upper and a lower limit positions.
  • the horizontal web of the U-shaped frame is equipped with a row of piercing pins destined to pronge the cow's bac upon it arching it against the pins, wherein the cow will reactively move backward toward the aft gutter.
  • the U-shaped frame is destined to prevent back arching, and although it is upwardly pivotable under the bias of the cow's back against it, it is destined to prevent the cow from vertically arching its back and consequently it is not destined in use to be vertically displaced.
  • the cow Upon initial contact with the pins, the cow would interrupt its back arching, to stop the pain from the pronging pins. It is believed that such a drastic method including physical pain to the cow may have been tolerated in the early days of 1924, but is highly undesirable in our current epoch and could also lead to infection and disease. It is understood that the vertical displacement of the U-shaped frame is advantageous for the dairyman, who can easily vertically pivot the U-shaped frame into an unobstructive position to take a cow out of or into the stall.
  • the present invention relates to a spacer member for use in a cattle stall, the cattle stall of the type having: a stall flooring for supporting a cow, a haystack ground feed bin at a front end of the stall flooring and an excrement receiving gutter at a rear end of the stall flooring opposite the haystack feed bin, and an upright open stall frame extending between the stall flooring and the haystack feed bin and having a transverse cross-stanchion extending above ground and slightly below the plane of the cow withers for through passage of a cow head beneath the cross-stanchion for the cow to feed into the front feed bin; said spacer member including: a) an elongated rigid body having a main web at one end thereof and another end opposite said main web; b) means for mounting said rigid body another end to the cross-stanchion of the stall frame for relative movement of said main web towards or away from a vertical plane intersecting the cross-stanchion; c) first stopper means, to prevent said main web
  • said spacer member rigid body includes means for telescopingly adjusting the distance between said main web and said rigid body another end.
  • said rigid body is a U-shape gate bar with said another end being the pair of opposite ends thereof, and further including a cylindrical sheathing, rollingly mounted around said main web to facilitate rolling engagement of said main web along the back of the cow when the cow moves towards or away from the front feed bin.
  • the spacer member further includes biasing means, for continuously biasing said rigid body main web from its said second top limit position to its said first bottom limit position.
  • the length of said main web is to be only a fraction of the total length of the cross-stanchion.
  • the present invention also relates to a cow positioning device for rearwardly positioning a cow away from a front haystack feed bin in its cow stall, said device comprising: a) a U-shaped gate bar having an elongated web portion and two transverse side legs integral to said web portion; b) mounting means, for mounting said side legs to a fixed ground frame cross-stanchion above ground and adjacent a front haystack feed bin for relative movement between a first rearwardly directed generally horizontal limit position and a second upwardly rearwardly inclined raised limit position; c) first and second stopper means, to prevent said gate bar from moving beyond said first and second limit positions thereof; and d) biasing means, for continuously biasing said gate bar from said second limit position toward said first limit position thereof; characterized in that said gate bar web portion and said mounting means are substantially horizontally coplanar in said gate bar first limit position, said gate bar web portion comprising
  • the present invention also relates to a cow positioning device for positioning a cow in a cow stall, comprising: a) a bracket for fixed attachment of said device in said stall spacedly over ground; b) a gate bar having an elongated horizontal portion and a transverse arm transversely and fixedly attached to said horizontal portion; c) pivot means, pivotally attaching said transverse arm to said bracket for pivotal displacement of said gate bar between a first and a second limit positions; d) biasing means, for biasing said gate bar toward said first limit position; characterized in that said gate bar horizontal portion and said pivot means are substantially horizontally coplanar in said gate bar first limit position, said gate bar horizontal portion comprising a smooth abutment surface, whereby said gate bar horizontal portion will compel the cow to stand therebehind when said gate bar is in its said first limit position, but will pivot toward said second limit position to allow passage of the cow upon either one of a rolling and a sliding forcible abutment of the cow's neck and back against said
  • Figure 1 is a perspective view of a cow in its stall, with its head and neck overhanging a hay stack feed bin and extending beneath a horizontal stanchion rod to which the cow is attached and on which the gate bar according to the invention is installed, with the gate bar in an upwardly pivoted, inoperative, unobstructive position;
  • Figure 2 is a perspective view, at an enlarged scale, of the U-shaped gate bar of the invention according to a first embodiment, as installed on a section of the stanchion rod, the gate bar being in a lower subtantially horizontal position;
  • Figure 3 is an exploded perspective view of the gate bar of the invention according to a second embodiment, suggesting the attachment thereof onto the stanchion rod section;
  • FIGS 4 and 5 are enlarged side elevations of the gate bar according to the second embodiment of the invention, with a transversal cross-section of the stanchion rod, showing respectively the lower generally horizontal position of the gate bar and the upwardly frontwardly pivoted, rearwardly inclined position thereof; and
  • Figure 6 is an enlarged side elevation of the first embodiment of the gate bar of the invention with a transversal cross-section of the stanchion rod, showing the lower generally horizontal position of the gate bar in full lines and the upwardly frontwardly pivoted position thereof in phantom lines.
  • FIG. 1 shows a conventional cow stall comprising an upright stanchion frame 10 and a horizontal stanchion rod 12 to which is chained a cow C in a known fashion.
  • the length of this securing chain 14 allows the cow C to duck its head under the stanchion rod 12 to reach its food in the haystack ground feed bin H ahead of the stanchion frome 10, and also allows the cow to move rearwardly into the stall, i.e. away from the haystack feed bin H and towards the rear end of the stall, where a gutter (not shown) is formed in the ground for receiving excrements released by cow C.
  • the stall can for example be generally similar to the one disclosed in the Cameron patent cited in the Background section of the present specification.
  • a cow positioning device 20 according to the invention is installed in operative fashion onto horizontal stanchion rod 12, in a manner which will be detailed hereinafter.
  • Figure 2 shows that device 20 comprises a bracket in the form of a first and a second bracket members 22, 24 which are fixedly attached to opposite ends of the registering section of stanchion rod 12.
  • the attachment of the bracket members onto the stanchion rod 12 is a retro-fit attachment on an existing stanchion frame.
  • Device 20 further comprises a U-shaped gate bar 26 pivotally attached at opposite ends to brackets 22, 24, so as to be pivotable between a first substantially horizontal lower position and a second not quite vertical upper limit position, which will be described hereinafter.
  • the device 120 of figure 3 is installed on stanchion rod 12 by means of a pair of brackets 122, 124 and comprises a U-shaped gate bar 126.
  • Brackets 122 and 124 being identical, only bracket 122 will be described, but reference numerals will be given for both brackets 122 and 124, for clarity of the specification.
  • Bracket 122 comprises a two-part casing 128a, 128b and 129a, 129b which enclose pivot means, described hereinafter.
  • Casing 128a, 128b and casing 129a, 129b are fixedly attached to the stanchion rod 12 by means of a pair of U-shaped tie rods 130, 132 and 131, 133, respectively, threaded at their lower ends and engaging casings 128a, 128b and 129a, 129b.
  • Casing 128a, 128b and casing 129a, 129b each comprises a short cylindrical sheath 134, 135 fixed to one of its walls 128b, 129b; sheaths 134, 135 are engaged in male- female fashion and in a freely rotatable fashion by complementary female sleeves 136, 137 fixed to gate bar tubular sleeve supports 138, 139 so as to allow pivotal displacement of the latter about sheaths 134, 135.
  • U-shaped gate bar 126 consists of a web 152 and two side arms or legs 140, 142.
  • Supports 138, 139 are engaged in male-female fashion by complementary end sections of (male) transverse arms 140, 142 in a lengthwisely selectively adjustable fashion due to the several holes 140a, 142a, either one of which can be chosen to register with the single holes 138a, 139a of sleeve supports 138, 139.
  • a stop pin 144, 146 allows the relative position of transverse arms 140, 142 and sleeve supports 138, 139 to be fixed by engaging bore 138a with a selected one of bores 104a, and bore 139a with a selected one of bores 142a.
  • Transverse tubular arms 140, 142 are elbowed and have inwardly aligned and facing extensions 148, 150 which are destined to engage a complementary tubular central straight sleeve bar 152.
  • a cylindrical sheath 154 is rollingly installed over bar 152 and may partly overlap the facing end portions of transverse arm extensions 148, 150.
  • Casings 128a, 128b and 129a, 129b comprise short abutment pads 156, 157, respectively, fixedly attached to one of their walls 128b, 129b.
  • pads 156, 157 have rigid inner pivot posts coated with an outer resilient layer of soft elastic material, e.g. rubber.
  • Figures 4 and 5 show that gate bar 126 is pivotable between a lower, substantially horizontal (i.e. inclined rearwardly slightly downwardly) first limit position shown in figure 4 and a second upper, not quite vertical (i.e. inclined upwardly slightly rearwardly) second limit position shown in figure 5.
  • first rearwardly directed lower limit position the full load of gate bar 126 is supported in this position with side legs 140, 142 abutting at their intermediate section on the underlying top face 156a of abutment pads 156, 157, longitudinally frontwardly of pivots 134, 135, relative to the elongated arms 140, 142.
  • gate bar 126 In its second upper limit position (figure 5) , gate bar 126 is simply applied at its free end portion against the front face 156b of pads 156, 157 rearwardly of pivots 134, 135, relative to elongated arms 140, 142. As suggested in figure 5, the front face of pads 156, 157 can yieldingly resiliently deform at the end of the pivoting course of gate bar 126 toward its second upper position under the load of bar 126; this results in a smoother abutment of the upwardly pivoting gate bar 126 against the abutment pads 156, 157. It can be seen that gate bar 126 will be continuously biased, under its own weight, toward its first lower limit position.
  • gate bar 126 can never reach a vertical position, and therefore it may never pivot down onto stanchion rod 12, since before it reaches a vertical position, it will abut with the free extremities of arms 140, 142 on pins 156, 157 which are correctly positioned therefor. It may only upwardly pivot toward its second upper limit position if it is forcibly biased thereto. But under unconstrained conditions, the gravity force will pivotally bias gate bar 126 into its first, lower limit position.
  • Pins 156, 157 are fixed at a selected position along substantially vertical (i.e. slightly upwardly rearwardly inclined) ovoidal slots 158, 160 made in casing 128a, 128b, 129a, 129b, whereby their vertical position is selectively adjustable. This results in a selective adjustment of the angular position of gate bar 126 in its first lower limit position, to fit stalls housing cows of different heights.
  • device 20 In use, device 20 is destined to position a cow in its stall in a desired position, which is with its hind quarters over the stall gutter, at the rear end thereof, so that if the cow releases excrements, they fall in the gutter instead of on the stall floor. Since the stall is usually too long for the cow's hind quarters to be located over the gutter, the device 20 has been introduced into the stall. When the cow is not eating, i.e. when it has its head raised in a normal standing position, the presence of the U-shaped gate bar 126 projecting into the stall generally towards the cow's throat will effectively compel the cow to stand rearwardly in the stall, i.e. away from the horizontal stanchion rod 12.
  • the adjustment of the angular position of the gate bar 126 in its first lower limit position may be initially accomplished, by manually sliding pads 156, 157 in their slots, and fixing them at a position that confers the desired angular position of gate bar 126, i.e. oriented towards the cow's neck underface when it is standing with its head raised in a normal position.
  • gate bar 126 need not be repeatedly adjusted afterwards, since it will fit the stall for this particular cow. If the cow wishes to eat some food which is located in the haystack bin ahead of stanchion rod 12, it may reach it by ducking its head under the gate bar 126, and then advancing until its neck and back engage the stanchion rod 12. Intermediate the cow and the stanchion rod 12 is gate bar 126, of course, but the latter will be upwardly pivoted into its non-obstructive upper second limit position upon the cow's neck and back abutting against the horizontal sheath 154 of gate bar 126. Sheath 154 will then slide and/or roll upon the cow's neck and back, effectively allowing pivotal displacement of the gate bar 126 into its second limit position, shown in figures 1 and 5.
  • the food of the cow is positioned ahead of the horizontal stanchion rod 12 so that the cow bring its shoulders under the stanchion rod 12, which must be located high enough over ground therefor.
  • the stanchion rod 12 would then prevent the cow from arching its back, provided that the height of the rod 12 is suitably adjusted.
  • the stanchion rod itself would effectively prevent the cow from releasing its excrements on the stall floor while it is eating.
  • the gate bar be substantially horizontal in its first, lower limit position, i.e. that the gate bar horizontal web portion and the pivot pins be substantially horizontally coplanar. Indeed, for the gate bar to be effective, it must lie horizontally in the cow stall, to compel the cow from standing where the gate bar is.
  • the gate bar is too much inclined downwardly, the cow may not be able to pivot it upwardly, only abutting contact with no pivotal displacement will occur, which of course is not desirable.
  • a small downward inclination of the gate bar will be advantageous, in that the cow with its head raised which advances against the gate bar which is slightly downwardly rearwardly inclined, is less likely to accidentally pivot it upwardly towards its second upper limit position with its throat.
  • the gate bar 26 of the first embodiment has transverse arms 40, 42 having elbowed extensions 48, 50 which merge with one another inside sheath 54 to form an integral horizontal portion or web of gate bar 26.
  • the central bar 152 is not present in this embodiment.
  • Abutment plate 57 has an upwardly rearwardly inclined upper wall in side elevation (figure 6) , and is destined to receive between its upper wall and pin 56 the gate bar support arm 42 for restricting the pivotal movement of the gate bar 26 between its first substantially horizontal, lower limit position shown in full lines in figure 6 at 26a, by the abutment of an intermediate section of arm 42 on pin 56; and its second, upwardly rearwardly inclined upper limit position shown in phantom lines in figure 6 at 26b, by the abutment of arm 42 against the underface of inclined plate 57.
  • plate 57 and pin 56 is a different structure than the pair of abutment pins 156, 157, but the purpose and result are equivalent.
  • the single assembly of plate 57 and pin 56 is shown to be installed on bracket 24, but it is understood that it could be installed on bracket 22, or on both brackets 22, 24.
  • brackets 22, 24 comprise instead a flat sheet support plate 28, 29 holding the pivot means that pivotally attach gate bar 26 to brackets 22, 24.
  • a spring 70 is attached in inclined fashion at its upper end to a bracket 43 integral to arm 26a and at its bottom end to ear 45 integral to plate 29, to continuously bias arm 42 toward its first lower limit position. This helps to keep the pivotable gate bar in this latter position, although the spring is not necessary, since the gravity force will effectively bias the gate bar into its first limit position, as explained hereinabove.
  • bracket member could be centrally disposed relative to the gate bar, with a transverse arm reaching from the bracket to the middle of the gate bar.
  • the gate bar would no longer be U-shaped, but would then be generally T-shaped.
  • the transverse arm would preferably be upwardly convex, so as not to be a nuisance for the cow when it advances against the gate bar, during the upward pivotal displacement thereof.
  • a pair of separate hollow sheaths could be provided on one side and the other of the transverse arm around the pivotable gate bar.
  • the combination of the stanchion rod and the pivotable gate bar could be replaced by a single pivotable gate bar that would act as both.
  • the bracket holding the gate bar could be posts driven into the ground, or the like advantageous structure.
  • the rollable sheath could be replaced by a suitable structure which may advantageously roll or slide upon the cow's neck and back.
  • the central bar 152 shown in figure 3 could be provided with a smooth rounded underface, or the entire bar could be cylindrical.
  • Other shapes and structures which do not cause injury to the cow and which would promote the upper pivotal displacement of the gate bar, are also envisioned.
  • the gate bar have another mounting means than the pivoting means provided in the embodiment shown in the drawings.
  • the gate bar could be upwardly slidable on vertical tracks provided along the vertical stanchion of the cow stall.
  • the gate bar must be movable between a first lower position in which it extends substantially horizontally into the stall, and a second position in which it is moved into an inoperative, unobstructive position by the cow which reaches for its haystack for feeding.
  • the main purpose of the present invention is thus not to physiologically prevent the cow from releasing its excrements as described in the prior art patents discussed in the Background of the Invention section of the present text; the purpose of the invention is rather to position the cow at a desired position with its hind quarters over the stall gutter at all times when it is not in a position to eat, for it to release its excrements in the gutter instead of on its stall floor.
  • the pivotable gate bar of the invention comprises several advantages over the known prior devices, and notably that it does not cause injury to the cow, that it is of simple construction and therefore inexpensive, that it is easily adjustable, and that it still allows the cow a small freedom of movement in its stall for it to reach its food, without being stuck under a pair of spaced, parallel fixed bars.
  • the U gate-bar is continuously biased downwardly along all relative positions thereof, for optimum use thereof.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Zoology (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Housing For Livestock And Birds (AREA)

Abstract

L'invention a pour objet un dispositif (20) de positionnement d'une vache, servant à positionner une vache dans une stalle, l'arrière de la vache se trouvant au-dessus de la gouttière de la stalle. Le dispositif comprend un support (22, 24) permettant la fixation du dispositif à la structure de la stalle en laissant un espace au-dessus du sol; une barre (26) de barrière munie d'une tige (48) horizontale allongée soutenue pivotante sur le support par des bras (40, 42) transversaux de façon à pouvoir pivoter entre une position horizontale inférieure et un position supérieure limite. Etant donné que la position supérieure limite n'est pas tout à fait verticale, la barre (26) sera déviée en direction de sa position limite inférieure du fait de la gravité. La barre comprend une surface (54) d'aboutement lisse, permettant à la vache d'engager sa partie située sous la tête en aboutement pivotant ou glissant, pour faire pivoter vers le haut par la contrainte la barre (26) dans sa position limite supérieure. La vache est ainsi forcée de dépasser de la barre lorsqu'elle est debout et la tête relevée, mais peut faire pivoter la barre (26) vers le haut de manière à atteindre sa nourriture placée sous la barre en courbant la tête sous la barre et en l'avançant. Ainsi, à tout instant sauf lorsque la vache mange, l'arrière de la vache sera placé près de l'extrémité arrière de la stalle, au-dessus de la gouttière, où les excréments de la vache tomberont le plus vraisemblablement.
PCT/CA1998/000228 1997-03-14 1998-03-13 Barriere pivotante pour stalle WO1998041085A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4059297P 1997-03-14 1997-03-14
US60/040,592 1997-03-14

Publications (1)

Publication Number Publication Date
WO1998041085A1 true WO1998041085A1 (fr) 1998-09-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009052829A1 (fr) * 2007-10-22 2009-04-30 Cow-Shopping A/S Séparateur de logettes et élément pour le positionnement des animaux

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA42626A (fr) 1893-04-14 Gerolt Gibson Arrete-croisee
US1503039A (en) * 1922-07-18 1924-07-29 Edwin J Franklin Clean-cow bar
US1512610A (en) 1924-03-22 1924-10-21 Kolb John Walter Sanitary cow stall
GB2059238A (en) * 1979-10-02 1981-04-23 Craggs C G A livestock pen
US4967693A (en) * 1989-07-27 1990-11-06 Gaston Poulin Animal training device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA42626A (fr) 1893-04-14 Gerolt Gibson Arrete-croisee
US1503039A (en) * 1922-07-18 1924-07-29 Edwin J Franklin Clean-cow bar
US1512610A (en) 1924-03-22 1924-10-21 Kolb John Walter Sanitary cow stall
GB2059238A (en) * 1979-10-02 1981-04-23 Craggs C G A livestock pen
US4967693A (en) * 1989-07-27 1990-11-06 Gaston Poulin Animal training device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009052829A1 (fr) * 2007-10-22 2009-04-30 Cow-Shopping A/S Séparateur de logettes et élément pour le positionnement des animaux

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