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The invention relates to a straw comprising a tube (11) extending between a first end (13) and a second end (14) and comprising a stopper (12) placed in the tube near the first end thereof and extending between a first end (17) facing the first end of the tube, and a second end (20) facing the second end of the tube, said stopper and said tube being configured such that, after a liquid substance (22) has come in contact with the stopper via the second end thereof, the stopper blocks the passage of the liquid substance therethrough and is, by pushing on the first end thereof, slidable into the tube toward the second end thereof. Moreover, the stopper comprises, on the side of the second end of the tube, a barrier pad (16) consisting of hydrophobic threads over the entire cross-section of the tube.

Imv Technologies | Date: 2017-01-25

The present invention relates to a composition for use in low dose artificial insemination and to a process for artificial insemination of a female mammal using a dose of sperm originating from a male mammal of the same species that is significantly lower than necessary in the absence of the composition. The preferred female mammal is a sow (sus scrofa), and preferably the composition is for use in artificial uterine insemination, and the process for artificial insemination preferably is uterine insemination.

The container straw comprises a tube (11) and a stopper (12) that is permeable to gasses and impermeable to liquids, in which stopper (12) is arranged in the tube (11) near one end (16), characterized in that it comprises an indicator component (20) configured to emit, at least when the container straw (10) is full, light the spectrum of which contains at least one spike having a peak of predetermined wavelength. The assembly comprises the container straw (10) and a container straw recognition device (26).

Agency: Cordis | Branch: FP7 | Program: BSG-SME | Phase: SME-1 | Award Amount: 1.30M | Year: 2009

In order to control the calving interval, and therefore to optimise milk production and maximise offspring in dairy cattle, artificial insemination (AI) is widely used. Currently, the conception rate of AI varies from 30% to 70%, the most critical aspect of successful conception being the timing of the insemination. Highest conception rates are achieved when the insemination is done 8 to 12 hours after the start of estrus (also known as standing heat). The right timing of AI, therefore, is related to detection of estrus in a cow. The BOVINOSE project aims to develop an electronic nose to detect estrus in a dairy cow, and thus to determine the optimal timing of artificial insemination. The physical principle is based on detection of sex pheromones that are exclusively secreted by the cow during estrus. These pheromones are the natural olfactory signal for the bull that the cow is in heat. Simply put, in essence, the device to be developed will mimic the bulls nose. To this end the info-chemicals that make up the sex pheromones in cows will be investigated, a set of sensors for detection of these sex pheromones (or mix thereof) will be researched, and a functional prototype, consisting of a probe, an array of sensors and dedicated, integrated software for control and user-interaction will be developed and tested in field trials. The impact of the project is high, tapping the dairy farming market, which consists of some 1,700,000 farmers in the EU-27, producing about 135 Billion Kg milk annually. Preliminary investigations show that a selling price of 1,800 would be economically attractive to the entire SME supply chain, providing an overall estimated profit of 10%-25% (depending on batch size). A sales price of 1,800 would imply an attractive 15 months payout time for the dairy farmer (end user) with a herd of 60 cows, based on costs savings related to higher AI conception rate from 50% average to 60% (conservative estimation).

The invention relates to a straw comprising a tube (11) and a gas-permeable and liquid-tight stopper (12), said stopper (12) being arranged in the tube (11), close to an end (16). The invention is characterised in that the stopper (12) comprises an indicator component (20) having a first pre-determined colour in the absence of previous contact with said substance (21) and a second pre-determined colour, of a different shade from that of the first colour, once it has been in contact with said substance (21). The assembly comprises the straw (10) and a device (26) for controlling the filling of the straw.

The invention concerns a system for collecting animal semen, comprising a container (3) configured to be mounted on an end (9) of an artificial vagina (2), having an internal space (15) configured to receive said semen and configured to comprise a first dilution extender (5) before receiving said semen, and said system (1) comprises a collecting device (4) configured to be at least partially inserted into said container and to be fastened to said vagina, and being interposed between said vagina and said container, said collecting device comprising a flow channel (23) for said semen extending within said internal space of said container and a discharge aperture (26) for said semen open to said internal space; and said system is configured to prevent, at least for the most part, said first dilution extender from passing in said flow channel of said collecting device.

The straw comprises a tube (11) having a swelling plug (15) provided with a fibrous support agent and a swelling agent combined with the support agent and configured, at least close to a second end (18) of the swelling plug, after a liquid-based substance has come up against its second end, to be in a state of swelling constrained by said tube such that if a first part (26) of the swelling plug of length comprised between 2 mm and 3 mm starting from its second end has come out of the tube via a second end (14) of the tube, whereas a second part of the swelling plug remains in the tube, the first part of the swelling plug becomes decompacted and expands with the second end of the swelling plug which assumes a diameter (d) at least equal to one and a half times the inner diameter of the tube.

A method for freezing a plurality of conditioning tubes is provided, each tube filled with a predetermined volume of biological substance, including arranging each conditioning tube directly into a conditioning unit placed in a cooling enclosure then causing the enclosure to be passed through by a flow of cooling agent and simultaneously driving the conditioning unit (6) in rotation, and providing the unit (6) with a greater capacity than the plurality of tubes; wherein the step of arranging each tube directly in a unit is carried out by placing the plurality of tubes into the unit, and the step of driving the unit in rotation is implemented by setting each tube in motion with respect to the unit and with respect to the other tubes.

The sheath (30) comprises a tube (31) and an end piece (32) that comprises a foot (33) introduced into an end portion of the tube (31), and a head (34) arranged in the extension of the tube (31). The foot (33) comprises, on the outer surface (40) thereof, a plurality of annular ribs (41-44) facing the inner surface (45) of the tube (31). The head (34) comprises a shoulder (38) facing the section (39) of the tube (31), projecting over the root of the foot (33). The end piece (32) and the tube (31) are attached to the periphery of at least one of said annular ribs exclusively by intrinsic welding. The method comprises the step of carrying out a peripheral tightening of the outer surface (37) of the tube on a level with the ribs (41 -44), and the step of applying a sonotrode to the outer surface (35-36) of the head (34).

An assembly is provided for freezing a plurality of conditioning tubes each filled with a predetermined volume of biological substance, in which each of the tubes is driven in rotation in a flow of cooling agent, the assembly including a cooling enclosure configured in order to be passed through by the flow of cooling agent and a conditioning unit which is removable and placed in the enclosure; the unit is provided with a greater capacity than the plurality of tubes in order to directly receive this plurality of the tubes, the enclosure is fixed and the assembly includes a unit for driving the conditioning unit in rotation, which unit for driving in rotation is provided with a connection interface on which the removable conditioning unit is placed.

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