Table 6.

Phosphorus digestibility of meat meal, fish meal, and soybean meal in pigs¹⁾

Item	Diet			SEM	p-value
	Meat meal	Fish meal	Soybean meal
Diet DM (%)	89.9	89.2	89.2	-	-
Diet P (%)	0.399	0.367	0.214	-	-
Diet intake (kg/d)	2.82	3.02	2.78	0.294	0.832
DM intake (kg/d)	2.54	2.68	2.48	0.264	0.841
P intake (g/d)	11.3a	11.1a	6.0b	0.93	0.002
Fecal DM (%)	96.7a	96.3a	93.3b	0.40	<0.001
Fecal P (%)	6.23a	5.33a	3.86b	0.246	<0.001
Fecal output (g/d)	87.8	86.2	100.6	16.20	0.787
DM output (g/d)	84.8	83.0	94.2	15.76	0.860
P output (g/d)	5.3	4.6	3.8	0.72	0.403
ATTD of DM (%)	96.6	97.0	96.3	0.41	0.471
ATTD of P (%)	51.7ab	59.8a	37.2b	5.00	<0.001
STTD2) of P (%)	55.8ab	64.3a	44.8b	5.00	<0.001

SEM, standard error of the mean; DM, dry matter; P, phosphorus; ATTD, apparent total tract digestibility; STTD, standardized total tract digestibility.

¹⁾Each least squares mean represents 6 observations.

²⁾Values for STTD were calculated by correcting ATTD values for the basal endogenous losses of P (182±25.3 mg/kg DM intake) determined in pigs fed the P-free diet.

^a,bMeans within a row without a common superscript letter differ (p<0.05).