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. 2012 Mar 27;3(1):11. doi: 10.1186/2049-1891-3-11

Table 11.

The effect of dietary SID-Lys:ME ratio on the growth of the litter (Exp. 2)

Item	Parity	No.	SID-Lys:ME ratio, g/Mcal							P-value

			2.1	2.4	2.7	3.0	3.3	Mean¹³	SEM	Treat	Linear	Quadratic
Initial litter weight, kg	1	31	13.57	13.68	14.26	13.41	13.37	13.65^x	0.53	0.81	--	--

	2	32	15.44	16.30	15.17	16.15	15.59	15.74^y	0.77	0.85	--	--

	3+	87	16.59	16.35	16.48	16.13	16.24	16.36^y	0.45	0.96	--	--

	Total	150	15.66	15.80	15.77	15.50	15.61	15.67	0.38	0.98	--	--

Litter weight at weaning, kg¹	1	31	68.39^d	71.81^c	73.01^bc	75.28^ab	76.15^ab	74.40^x	2.17	< 0.01	< 0.01	0.84

	2	32	74.05^d	75.07^cd	77.30^bc	79.99^a	78.91^ab	76.66^y	1.63	< 0.01	< 0.01	0.96

	3+	87	77.56^c	80.31^b	81.86^b	85.02^a	84.92^a	81.53^z	1.31	< 0.01	< 0.01	< 0.01

	Total²	150	75.74^d	78.33^c	79.85^b	82.60^a	82.34^a	79.77	1.16	< 0.01	< 0.01	0.06

Litter weight gain, kg/d¹	1	31	1.96^c	2.09^b	2.13^ab	2.21^a	2.23^a	2.11^x	0.05	< 0.01	< 0.01	0.13

	2	32	2.09^c	2.12^bc	2.20^ab	2.29^a	2.25^a	2.19^y	0.04	< 0.01	< 0.01	0.03

	3+	87	2.20^c	2.30^b	2.36^b	2.47^a	2.47^a	2.36^z	0.04	< 0.01	< 0.01	0.20

	Total²	150	2.16^d	2.25^c	2.30^b	2.40^a	2.40^a	2.30	0.03	< 0.01	< 0.01	0.08

¹Initial litter weight, number of piglets suckling and lactation length were used as covariate in the analysis

²Parity effect was included in the model

³Parity effect and treatment effect was included in the model

^{a, b, c, d}Within a row, values with no common superscript differ significantly (P < 0.05)

^{x, y, z}Within a column, values with no common superscript differ significantly (P < 0.05)