Abstract: A method of measuring the electric conductivity of body fluids. It uses several test electrodes positioned at various sites at one area of the body to determine electric resistance. The measurements are obtained with a test probe that accommodates the test electrodes. The resistances detected by the test electrodes are polled and the minimal resistance is exploited as a reference for determining electric conductivity. The test probe employed to carry out the method is characterized by a large number of point-shaped test electrodes distributed over the surface of the test probe and associated with the same grounding device.

Abstract: Ultrasound apparatus for determining whether a female large animal, especially a cow or a mare, is gravid, with an ultrasonic head (1) that has an ultrasound transmitter (7) and receiver (8) at one face (9) and with a housing (4) that accommodates a signal generator (28) and a battery (29) or a connection to an external source of electricity for operating the apparatus, whereby the transmitter-receiver is connected to the signal generator and battery or external-source connection by a cable, characterized in that a resilient annular structure (30) that projects beyond the face (9) of the ultrasonic head (1) and surrounds the transmitter (7) and receiver (8) is attached to the head in the vicinity of its face, and a handle (2 & 3) is connected to the outside of the ultrasonic head.

Abstract: Device for veterinary obstetrical delivery that can be placed against the body of the dam, that has a support (1) that is positioned in relation to the body of the dam, a rod (2) that is mounted on and can be connected to the side of the support facing away from the body, and a tensioning mechanism (3) mounted on the rod and provided with hooks (4) on which can be suspended slings for the legs of the new-born animal. To prevent injury to the subvaginal region of the body of the dam during delivery as the result of the direct action of the support, the support is mounted to pivot in one end of the rod.

Abstract: A device for arresting the hind legs of animals, such as cattle, has a ring which is placed about the leg just above the leg joint, and within the ring a pressure member is movable which can be pressed against the Achilles tendon of the leg.