Table 3.

Results on milk composition and piglet performance: exp. 2

Item	Days in milk
	N 1	3	10	17	25
		LSMean ± SEM [min; max]	LSMean ± SEM [min; max]	LSMean ± SEM [min; max]	LSMean ± SEM [min; max]	P-value
Milk composition
DM, %	18 (15)	18.67 ± 0.28a	17.52 ± 0.25b	17.06 ± 0.26b	16.63 ± 0.28b	<0.001
		[16.7; 21.85]	[16.18; 19.96]	[15.94; 18.97]	[15.44; 17.83]
Fat, %	18 (15)	7.71 ± 0.26a	6.94 ± 0.24ab	6.47 ± 0.24cb	5.82 ± 0.26c	<0.001
		[6.15; 10.9]	[5.77; 9.94]	[5.7; 7.8]	[4.96; 6.77]
Protein, %	18 (15)	5.47 ± 0.1a	4.56 ± 0.09b	4.47 ± 0.09b	4.69 ± 0.1b	<0.001
		[4.49; 6.62]	[3.46; 5.44]	[3.48; 5.41]	[3.82; 5.66]
Lactose, %	18 (15)	4.88 ± 0.04c	5.19 ± 0.04b	5.31 ± 0.04ab	5.43 ± 0.04a	<0.001
		[4.43; 5.43]	[4.76; 5.44]	[4.99; 5.68]	[5.27; 5.6]
GE, kJ/100g	18 (15)	503 ± 9.5a	458 ± 8.6b	444 ± 8.9b	427 ± 9.2b	<0.001
		[435; 631]	[419; 539]	[403; 514]	[385; 468]
Piglet performance
Milk intake, g/d2,3	54 (45)		871 ± 36b	1,201 ± 35a	1,217 ± 36a	<0.001
			[484; 1,277]	[595; 1,588]	[718; 1,684]
Live weight gain, g/day3	252 (210)		236 ± 5.34b	270 ± 5.41a	275 ± 5.63a	<0.001
			[46; 358]	[69; 441]	[71; 418]
Conversion ratio, g milk/ g gain3	54 (45)		3.92 ± 0.1b	4.55 ± 0.1a	4.77 ± 0.1a	<0.001
			[3.21; 5.27]	[3.65; 6.72]	[3.79; 7.24]
Live weight, g	252 (210)	1,845 ± 85d	3,442 ± 85c	5,316 ± 86b	7,561 ± 88a	<0.001
		[1,200; 2,812]	[1,654; 5,102]	[2,871; 7,301]	[4,320; 10,160]
Litter size4	18	14.0 ± 0.00	13.4 ± 0.59	13.0 ± 0.58	12.9 ± 0.64	–
		[14; 14]	[12; 14]	[12; 14]	[12; 14]

¹Number of observations per day in milk. In parenthesis is given the number of observations at day 25 (week 3).

²The milk intake was measured by the deuterium dilution technique.

³Live weight gain, milk intake, and conversion ratio were determined weekly, i.e., at days 3 to 10, 10 to 17, and 17 to 25, respectively.

⁴Litter size is given as mean ± SD.

^a,b,c,dSuperscript letters within a row indicate a significant difference between days in milk.