Effects of the standardized ileal digestible lysine to metabolizable energy ratio on performance and carcass characteristics of growing-finishing pigs

Table 4 Effect of dietary ME level on performance of growing-finishing pigs (Experiments 1, 2 and 3)¹

Item	ME level, Mcal/kg				SEM	P value
						ANOVA	Linear	Quadratic
Experiment 1 (30 to 50 kg)	3.1	3.2	3.3	3.4
Weight gain, kg/d	0.64^a	0.68^b	0.67^b	0.67^b	0.01	0.02	0.09	0.19
Feed intake, kg/d	2.10^a	1.92^ab	1.79^b	1.70^b	0.07	0.01	0.43	0.01
Feed efficiency	0.31^a	0.36^b	0.38^b	0.40^b	0.02	< 0.01	0.95	< 0.01
Experiment 2 (52 to 70 kg)	3.1	3.2	3.3	3.4
Weight gain, kg/d	0.74	0.79	0.79	0.76	0.02	0.08	0.57	0.31
Feed intake, kg/d	2.75^a	2.57^ab	2.51^ab	2.33^b	0.09	0.04	0.06	0.18
Feed efficiency	0.27^a	0.31^ab	0.32^b	0.33^b	0.01	0.04	0.01	0.03
Experiment 3 (81 to 104 kg)	3.05	3.15	3.25	3.35
Weight gain, kg/d	0.78	0.78	0.78	0.80	0.01	0.53	0.20	0.39
Feed intake, kg/d	3.38^a	3.27^a	3.20^a	2.97^b	0.06	< 0.01	0.02	0.06
Feed efficiency	0.23^a	0.24^a	0.25^a	0.27^b	0.01	< 0.01	< 0.01	0.03

^{a, b}Means in the same row with different superscripts are significantly different (P < 0.05).
¹Value represent means of six pens with 11 to 15 pigs per pen during a 28-d period.

ISSN: 2049-1891