Effects of different starch structures on energy metabolism in pigs

Table 5 Effects of dietary starch structure on carcass composition, energy, protein and fat deposition in pigs

Item	ISG	CON	AR					SEM	P-value
Item	ISG	CON	3.09	1.47	0.25	0.15	0.12	SEM	ANOVA	Linear	Quadratic
Carcass composition
DF BW, kg¹	9.86	23.86	24.66	24.86	25.62	26.41	25.69	0.26	0.063	0.061	0.127
DF BW, kg DM	2.67	7.56	6.99	7.49	6.89	8.22	7.86	0.16	0.118	0.057	0.166
Total protein, kg	1.38	3.70	3.79	3.99	4.04	4.02	3.96	0.04	0.140	0.275	0.171
Total lipids, kg	0.70	2.74^ab	2.17^c	2.53^bc	2.60^b	3.10^a	2.74^ab	0.07	0.002	0.001	0.001
Total energy, Mcal	14.67	47.25^abc	42.51^c	46.34^bc	46.96^abc	51.92^a	48.69^ab	0.78	0.016	0.003	0.005
Retention
Protein gain, g/d	-	82.81	86.15	93.24	95.17	94.46	92.12	1.60	0.137	0.272	0.168
Lipid gain, g/d	-	72.80^ab	52.46^c	65.37^bc	67.97^b	85.89^a	72.81^ab	2.44	0.002	0.001	0.001
Lipid:protein, g/g²		0.88^a	0.61^c	0.70^bc	0.72^bc	0.91^a	0.79^ab	0.02	< 0.001	0.001	0.001
MER, Mcal/d³	-	1.17^abc	1.00^c	1.13^bc	1.15^abc	1.33^a	1.22^ab	0.03	0.017	0.003	0.005
CER, Mcal/d⁴	-	1.16^abc	0.98^c	1.15^bc	1.18^ab	1.35^a	1.21^ab	0.03	0.009	0.003	0.002

AR Amylose/amylopectin ratio, BW Body weight, CON Control group, ISG Initial slaughter group
¹DF BW = digesta-free BW, which is the sum of the weight of the chilled carcass, empty viscera, and blood
²Lipid:protein = the ratio of daily lipid gain to daily protein gain
³MER = measured energy retention
⁴CER = calculated energy retention (calculated from protein and lipid gain as 5.66 and 9.46 kcal/g for protein and lipid, respectively)
^a–cMeans within a row with different superscripts significantly different (P < 0.05)

ISSN: 2049-1891