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GROWTH CHANGES IN BOVINE MUSCLE FIBER TYPES AS INFLUENCED BY BREED AND SEX
Author(s) -
SPINDLER A. A.,
MATHIAS M. M.,
CRAMER D. A.
Publication year - 1980
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1980.tb03863.x
Subject(s) - breed , muscle fibre , zoology , biology , fiber type , biceps , fiber , white (mutation) , anatomy , skeletal muscle , chemistry , genetics , organic chemistry , gene
Samples of the biceps femoris were collected at 56‐day intervals from 28 days of age to slaughter from 24 Hereford, Angus, Holstein heifer and steer twin calves to define the effects of age, sex, and breed on histochemically estimated muscle fiber type patterns. Red, white, and intermediate fiber types doubled in mean cross‐sectional area during growth in all calves, while encounters of white fibers slightly increased and encounters of red fibers slightly decreased. In general, heifers had larger muscle fibers than steers, and Holstein steers had smaller fibers than Hereford or Angus steers.