Method and means for determining the ease with which a cow may g

Details Method and means for determining the ease with which a cow may g Method and means for determining the ease with which a cow may g

1986-04-22

1987-07-07

Fuller, Benjamin R.

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235 70A, G06G 102

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046788930

ABSTRACT:
The present invention comprises a method and device for determining the ease with which a cow may give birth to a calf. It includes a slide rule having two movable slides and a fixed slide. The fixed slide includes a predicted calving score scale at one end thereof and a hoof circumference scale at the other end thereof. One of the moving slides includes a pelvic height scale, and the other moving slide includes a pelvic width scale.
The method of the present invention involves measuring the pelvic height and pelvic width of a cow which is about to give birth to a calf. Next, the hoof circumference of the calf is measured prior to the time that it is born. The measured pelvic height, pelvic width, and hoof circumference are lined up on the slide rule and this results in indicators on the two movable slides being positioned adjacent a predicted calving score. The predicted calving score indicates the ease with which the cow will give birth to a calf.

REFERENCES:
patent: 1378993 (1921-05-01), Boehnke
patent: 2585595 (1952-02-01), Spencer
patent: 3589021 (1971-06-01), Hall
patent: 3918164 (1975-11-01), Krautmann
patent: 4037327 (1977-07-01), Hildebrand
patent: 4097997 (1978-07-01), Bjornson
patent: 4138999 (1979-02-01), Eckhart et al.
patent: 4201226 (1980-05-01), Phillips
patent: 4425713 (1984-01-01), Rotella
patent: 4429749 (1984-02-01), Nelms
Article Entitled "He Uses Pelvic Scores", Successful Farming Feb., 1981.

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