Strategies to improve fiber utilization in swine

Table 6 Growth performance and apparent total tract digestibility of 10 to 23 kg pigs receiving phytase, or a cocktail of xylanase, amylase, and protease ¹

	Pig performance			Apparent total tract digestibility,%
Dietary treatment	ADG, g	ADFI, g	G:F, g:kg	DM	GE	N	P
Negative control (NC)	398	1140	363	80.2	79.8	80.1	38.3
NC + Phytase²	483	1070	457	80.1	78.1	80.2	49.9
NC + Enzyme³	393	1050	380	82.3	80.1	81.2	48.3
NC + Ph + En	479	1210	415	80.0	79.0	80.0	51.1
SEM	10.4	30	13.7	0.20	0.43	0.43	0.87

¹ There were 4 replicate pens each of barrows and gilts (1 pig/pen) in the 28 d trial.
² Phytase was added at the rate of 500 phytase units/kg diet [78].
³ Cocktail of 400 U of xylanase, 4,000 U of amylase, and 2,500 U of protease per kg of diet.

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