Integrative analysis of indirect calorimetry and metabolomics profiling reveals alterations in energy metabolism between fed and fasted pigs

Table 2 The effect of fasting treatment on heat production, respiratory quotient and urine nitrogen in growing pigs

Items	2400, kJ/(kg BW^0.6·d)	Fasting		SEM	P-value
Items	2400, kJ/(kg BW^0.6·d)	24 h	48 h	SEM	P-value
n	9	9	9
Body weight, kg	47.6	48.4	46.1	1.9	0.68
Oxygen consumption, L/d	569^a	417^b	361^c	19	< 0.01
Carbon dioxide production, L/d	613^a	349^b	294^b	36	< 0.01
Methane production, L/d	4.5^a	2.6^b	1.5^b	0.4	< 0.01
Heat production, kJ/(kg BW^0.6·d)	1206^a	828^b	733^b	36	< 0.01
Respiratory quotient	1.07^a	0.84^b	0.81^b	0.01	< 0.01
Urine nitrogen, g/d	9.52	6.83	6.45	0.92	0.054

ISSN: 2049-1891