MODE OF INHERITANCE AND EFFECTS ON MEAT QUALITY OF THE RIB-EYE MUSCLING (REM) QTL IN SHEEP

Jopson Nb, Nicoll Gb, JM Stevenson-Barry, Simon J. Duncan, Greer Gj, Bain We, EM Gerard, Glass Bc, TE Broad, John C. McEwan

2001 · 35 citations · 0 references

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Abstract

The rib-eye muscling (REM) QTL, identified in descendants of Poll Dorset rams from the Carwell stud, NSW, Australia, is known to be located in the same region of sheep chromosome 18 as the hyper-muscling locus, Callipyge. Callipyge displays a complex inheritance pattern of maternal overdominance and exhibits detrimental effects on meat tenderness. Carwell has been shown to increase eye muscle area by approximately 10 percent, but its effect on tenderness and its mode of inheritance have not been reported.