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Permanent link (DOI): https://doi.org/10.7939/R3N103

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Energetics of carcass muscle and fat growth of composite types at different harvest times Open Access

Descriptions

Other title
Subject/Keyword
muscle
harvest times
fat
Energetics
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Welegedara, Nilusha P. Y.
Supervisor and department
Goonewardene, Laksiri (Agricultural, Food and Nutritional Science)
Examining committee member and department
Basarab, John (Alberta Agriculture and Rural Development)
Bruce, Heather (Agricultural, Food and Nutritional Science)
Okine, Erasmus (Agricultural, Food and Nutritional Science)
Wang, Zhiquan (Agricultural, Food and Nutritional Science)
Department
Department of Agricultural, Food, and Nutritional Science
Specialization
Animal Science
Date accepted
2013-01-22T15:35:19Z
Graduation date
2013-06
Degree
Master of Science
Degree level
Master's
Abstract
The energy requirements to produce muscle and fat in five beef composites relative to harvest age were determined. In Exp. 1, the proportion of muscle in the whole carcass decreased and fat increased with harvest age (P < 0.01). Based on energy apportioned to muscle and fat, to obtain lean beef, the optimum time to harvest M1 is 399 d, M2 is 399 d or 427 d, M3 is 372 d or 399 d, M4 is 456 d and TX > 456 d. Small framed composites deposited energy fat subcutaneously and large framed intermuscularly. In Exp. 2, the energy used to deposit muscle and fat in the primal cuts was determined. The proportion of fat energy began to exceed 50% of the total energy at different ages in primal cuts of composites. The ratio of energy required for muscle: fat was highest in the round and lowest in the flank.
Language
English
DOI
doi:10.7939/R3N103
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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