Increasing the efficiency of muscle growth [animal growth]
1993
Oddy, V.H. (New South Wales Agriculture, Menangle (Australia). Elizabeth Macarthur Agricultural Inst.)
Gives details of methods, results, conclusions and areas for further research from a project undertaken to find a biochemical marker which could be incorporated into selection procedure for sheep and cattle with greater rates of muscle growth, hence increased feed efficiency. There are inherited differences in protein deposition in sheep which are associated with alterations in protein degradation in muscle and the body as a whole, intake and digestion of feed and partition of nutrients between body and wool. There are differences in biochemical-hormonal indicators which could be developed to identify animals with superior muscle growth characteristics. Two of these indicators of efficient lean growth have been identified during the project work: plasma IGF-1 concentration and differences in insulin receptor number in muscle. With further study it may be possible to use measurements based on this information as part of a selection index for efficient lean growth in animals.
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