Table 10.

Effect of addition of 1,000 units of phytase (FTU) on ATTD of DM and Ca in torula yeast or fish meal (FM)^1,2

Item	No phytase		1,000 FTU			P-value
Ingredient	Torula yeast	FM	Torula yeast	FM	SEM	Ingredient	Phytase	Ingredient × phytase
Ca intake, g/d	3.31	8.58	3.09	8.89	0.41	<0.001	0.919	0.517
Ca in feces, %	3.44	8.79	2.58	9.11	0.56	<0.001	0.631	0.305
Ca in feces, g/d	0.79	3.11	0.48	2.69	0.35	<0.001	0.299	0.873
ATTD of DM, %	96.5	93.1	96.8	94.0	0.39	<0.001	0.149	0.473
ATTD of Ca, %	76.8	65.1	84.2	70.5	3.70	0.002	0.093	0.791

¹Data are least square means of 8 observations.

²Values for daily intake or output are the average of a 4-d collection period.