Table 1.

Growth and milk performance in the first lactation.

Factor		$N$	Live body weights at 30 d		Live body weights at 305 d
			$x$ $\pm$ SE	$P$ value	$x$ $\pm$ SE	$P$ value
Group	1	13	528.25 $\pm$ 11.39	0.0689	612.64 $\pm$ 12.21${}^{\text{ab}}$	0.0165
	2	9	571.69 $\pm$ 15.35		623.12 $\pm$ 16.45${}^{\text{b}}$
	3	13	533.19 $\pm$ 12.34		569.82 $\pm$ 13.22${}^{\text{a}}$
Sire	1	4	549.39 $\pm$ 21.38	0.1863	595.93 $\pm$ 22.91	0.2793
	2	10	535.92 $\pm$ 13.05		596.68 $\pm$ 13.98
	3	13	524.67 $\pm$ 11.53		587.47 $\pm$ 12.35
	4	8	567.53 $\pm$ 15.03		627.37 $\pm$ 16.11
Factor		$N$	Milk for 305 d (kg)		FCM for 305 d (kg)
			$x$ $\pm$ SE	$P$ value	$x$ $\pm$ SE	$P$ value
Group	1	13	7143.9 $\pm$ 241.5	0.8459	6290.3 $\pm$ 203.2	0.7382
	2	9	7345.1 $\pm$ 319.0		6307.6 $\pm$ 268.4
	3	13	7146.7 $\pm$ 187.9		6399.3 $\pm$ 197.1
Sire	1	4	7201.4 $\pm$ 451.2	0.1507	6443.3 $\pm$ 379.7	0.0940
	2	10	7725.0 $\pm$ 252.7		6819.4 $\pm$ 212.7
	3	13	7106.5 $\pm$ 241.7		6069.0 $\pm$ 203.3
	4	8	6814.7 $\pm$ 294.8		6187.3 $\pm$ 248.1

a, b – means with different letters are significant ($p<\mathrm{0.05}$); Group 1 (SM: suckling mother); Group 2 (SN: suckling nursing cow); Group 3 (H: individual hutch); $N$: number of animals; SE: standard error.