The breakdown of the interpretation of the genes you speak of is as follows: Leptin: TT - highest propensity for intake and fat accumulation; CT - intermediate; and CC - lowest propensity for intake and fat accumulation. PMCH: AA - highest propensity for fat accumulation; AA & AT - have the lowest WBSF shear force tenderness values (most tender); TT - lowest propensity for fat accumulation and have the highest WBSF shear force values (least tender). Note: As far as tenderness is concerned, TT's are approximately 0.20 - 0.40 kg tougher than AA & AT animals, which is approximately equal to a detectable difference of a trained test panel. TT's only represent ~ 5-8% of any random population - so this gene is more useful in identifying "tough" problematic carcasses for tenderness (i.e. TT's) rather than identify "tender" animals. IGF2: CC - tend to have increased backfat, HCW, and REA size; CT - intermediate TT - tend to have reduced backfat, HCW, and REA size. I hope this helps Frank. If you need further clarification just let me know. Leigh Marquess Quantum Genetix Canada Inc. |