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Studies in the muscles of meat animals. IV. Comparative composition of muscles from ‘doppelender’ and normal sibling heifers

Published online by Cambridge University Press:  27 March 2009

R. A. Lawrie ,
R. W. Pomeroy  and
D. R. Williams
R. A. Lawrie
Affiliation:
Low Temperature Research Station, Downing Street, Cambridge
R. W. Pomeroy
Affiliation:
Low Temperature Research Station, Downing Street, Cambridge
D. R. Williams
Affiliation:
Low Temperature Research Station, Downing Street, Cambridge
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Extract

1. Fourteen muscles from a normal 46-week-old Friesian heifer and from its 40-week-old half-sister, which showed the pronounced muscle hypertrophy of ‘doppelender’ cattle, were analysed for moisture, hydroxyproline, sodium, potassium, total nitrogen, and intramuscular fat: the iodine number of the latter was determined. In four of the muscles sarcoplasmic, myofibrillar and stroma nitrogens were also estimated.

2. Hypertrophy was associated with a mean increase in the percentage of total nitrogen, with markedly lower percentages of hydroxyproline and of intramuscular fat, and with a decreased K/Na ratio.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 62 , Issue 1 , February 1964 , pp. 89 - 92
Copyright
Copyright © Cambridge University Press 1964

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