Effect of dietary energy levels and phase feeding by protein levels on growth performance, blood profiles and carcass characteristics in growing-finishing pigs

Table 8 Effects of dietary energy and protein levels on economical efficiency

Criteria	Treatments						SEM²	P-value
Criteria	ME 3,265	ME 3,365	CON	P4	P5	LP5	SEM²	E	P	E×P
Feed cost per weight gain, won/kg
0-3 weeks	778^B	870^A	851	847	831	768	17.2	0.01	0.33	0.63
3-6 weeks	988	1,049	1,029	1,010	1,048	985	19.1	0.15	0.75	0.66
6-9 weeks	1,035^B	1,202^A	1,124	1,120	1,180	1,050	41.1	0.02	0.60	0.34
9-12 weeks	1,119	1,186	1,166	1,188	1,172	1,083	32.4	0.51	0.62	0.63
12-13 weeks	1,110	1,177	1,318	1,136	998	1,121	54.2	0.98	0.14	0.38
0-13 weeks	5,029^B	5,484^A	5,489	5,302	5,230	5,006	88.8	0.02	0.17	0.33
Total feed cost per pig, won/head
0-3 weeks	13,640	14,912	14,438	13,830	15,107	13,729	383.7	0.11	0.58	0.68
3-6 weeks	17,642	18,659	18,992	17,439	18,833	17,339	431.6	0.27	0.43	0.94
6-9 weeks	20,343^B	22,140^A	22,286	20,744	21,280	20,655	432.2	0.04	0.54	0.98
9-12 weeks	22,143^B	24,288^A	23,438	23,454	23,875	22,096	386.5	0.01	0.27	0.27
12-13 weeks	7,663^B	9,151^A	8,431	8,762	8,232	8,204	186.6	0.01	0.47	0.80
0-13 weeks	81,431^B	89,150^A	87,585	84,230	87,326	82,023	1469.7	0.01	0.55	0.92
Days to market weight (Day, reached 120 kg BW)
	105.5	102.4	106.8	103.9	102.2	102.9	1.60	0.36	0.77	0.40
Carcass yield and price
Carcass yield, %	76.7	76.7	77.2	76.0	76.2	77.4	0.270	0.95	0.23	0.99
Carcass price, 1,000 won	377.6^a	368.4^b	368.3	376.2	365.6	381.8	2.641	0.08	0.12	0.90

¹Standard error of mean
^ABmeans with different superscripts in the same row significantly differ (P < 0.05)
^abmeans with different superscripts in the same row significantly differ (0.05 ≤ P < 0.10)

ISSN: 2055-0391