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A Biopsy Technique and Its Use in Studying Changes in Muscle during Fattening¹

University of Wisconsin⁵

Abstract

A biopsy technique is described by which samples of the semimembranosus muscle can be taken from cattle. Samples can be taken from the opposite muscle after experimental treatment. If experimental treatments bring about changes in this muscle in a similar manner to that of others, then it appears that the use of this technique would allow animals to serve as their own controls.

In two experiments involving 16 steers, samples taken by this technique seemed to provide satisfactory data as regards moisture, intra-muscular fat and shear test values.

¹ Published with the approval of the Director of the Wisconsin Agricultural Experiment Station, Madison.

² Present address: American Meat Institute Foundation, Univ. of Chicago, Chicago, Ill.

³ Present address: Hormel & Co., Austin, Minn.

⁴ Present address: Veterinary School, Univ. of Minn., St. Paul, Minn.

⁵ Departments of Animal Husbandry and Veterinary Science, Madison, Wis.