Table 2.

Relationship between carcass composition from dissection and DXA carcass or in vivo body composition, depending on species (pig, sheep, cattle) studied (all whole-body DXA data from the same GE Lunar DPX-IQ scanner ¹ )

	Pig (n=61)			Lamb (n=93)			Calf (n=34)
	R 2 (√m.s.e./s.d.)			R 2 (√m.s.e./s.d.)			R 2 (√m.s.e./s.d.)
Dissection v. DXA		Carcass	In vivo		Carcass	In vivo		Carcass	In vivo
Reference	CV			CV			CV
FAT (%)	0.19	0.80 (0.46)	0.74 (0.46)	0.22	0.73 (0.52)	0.51 (0.69)	0.14	0.28 (0.86)	0.003 (1.02)
FAT (g)	0.28	0.90 (0.32)	0.89 (0.43)	0.31	0.83 (0.42)	0.71 (0.27)	0.23	0.64 (0.78)	0.42 (0.39)
Meat (%)/soft lean (%)	0.05	0.70 (0.57)	0.65 (0.64)	0.04	0.57 (0.66)	0.50 (0.70)	0.04	0.53 (0.69)	0.09 (0.97)
Meat (g)/soft lean (g)	0.14	0.94 (0.39)	0.82 (0.55)	0.10	0.88 (0.35)	0.57 (0.33)	0.23	0.98 (0.13)	0.94 (0.12)

DXA=dual-energy X-ray absorptiometry.

¹ This is the only known comparison for the three livestock species using the same DXA device always to compare carcass and in vivo data with reference dissection, modified from Scholz et al. (2013).