CELLULAR GROWTH OF MUSCLE-FIBER AND FAT-C ELLS FROM HEREFORD STEERS UNDER EXTENSIVE METHODS OF MANAGEMENT

Title of the paper: Cellular growth of muscle fibre and fat cells from Hereford steers under extensive methods of management. Muscle and fat samples were taken from M. semitendinosus by shot biopsy at 140, 180, 300, 400, 470 and 570 days of life in twenty Hereford steers. The mic roscopically measured diameter of muscle fibres and fat cells were inf luenced by extensive feeding during growth. In the winter the growth o f cells ceased and also in the summer the cells did not attain the lev el seen in cattle kept in stables. The slaughtering in autumn yielded only a small fat content in both carcass and muscle. The intramuscular fat content did not meet the requirements of quality meat.