. 2019 Dec 12;9(12):1136. doi: 10.3390/ani9121136

Table 6.

Correlations among calculated growth and methane efficiency traits *.

Trait ^‡	ADG/DMI	r_wiADG	r_wgDMI	CH₄/DMI	r_wiCH₄
BW	0.03	0.00	0.00	0.02	0.00
	−0.02	0.00	0.00	0.04	0.00
DMI	−0.43 ^a	0.00	0.88 ^a	−0.77 ^a	0.00
	0.04	0.00	0.82 ^a	−0.67 ^a	0.00
ADG	0.63 ^a	0.89 ^a	0.00	−0.08	0.20 ^c
	0.97 ^a	0.96 ^a	0.00	−0.08	0.21
CH₄	0.14 ^c	0.17 ^b	0.04	0.27 ^a	0.73 ^a
	0.13	0.15	0.08	0.30 ^b	0.70 ^a
CO₂	0.14 ^c	0.16 ^c	0.02	0.17 ^c	0.46 ^a
	0.08	0.10	0.05	0.15	0.31 ^c
ADG/DMI		0.81 ^a	−0.67 ^a	0.57 ^a	0.21 ^a
		0.99 ^a	−0.20	0.07	0.19
r_wiADG			−0.23 ^a	0.10	0.23 ^a
			−0.26 ^c	0.13	0.22
r_wgDMI				−0.87 ^a	−0.05
				−0.83 ^a	−0.06
CH₄/DMI					0.44 ^a
					0.54 ^a

* Galle heifers on first line, Borculo heifers on the second line; ^‡ See Table 1 for description of traits; ^a Correlation coefficient significantly different from zero at p < 0.001; ^b Correlation coefficient significantly different from zero at p < 0.01; ^c Correlation coefficient significantly different from zero at p < 0.05.