Figure 3.

Additive effects of the capn1_184 genotype and ageing on tenderness in representative purebred South African beef bulls. *GG—the genotype that favored tenderness. Within each ageing period, different ascending letter superscripts (a, b, c) were significantly different (p ≤ 0.05), and those that tended to be different (p ≤ 0.10) were indicated with different descending letter superscripts (z, y): (a) Warner–Bratzler shear force (WBSF); the effect on d 20 was not significant after FDR adjustment (adjusted p ≤ 0.1250); (b) relative calpastatin inhibition of protease(s).