. 2023 Aug 28;36(12):1869–1879. doi: 10.5713/ab.23.0212

Table 5.

Apparent total tract digestibility (ATTD) of nutrients, and nitrogen retention (NR) of dried distillers grains with solubles (DDGS) in pigs¹⁾ fed DDGS diets with and without selected feed enzymes supplemented individually or combined

Item²⁾	Treatment³⁾								SEM	p-value

	CON	Phy	Pro	Xyl	Phy+Pro	Phy+Xyl	Xyl+Pro	Phy+Xyl+Pro
DDGS diet
ATTD of DM (%)	82.9^d	83.4^cd	85.0^a	84.8^ab	83.9^bc	84.8^ab	83.5^cd	82.5^d	0.4	<0.001
DE (kcal/kg)	3,162^bc	3,178^bc	3,251^a	3,242^a	3,185^b	3,236^a	3,182^b	3,120^c	20	<0.001
ME (kcal/kg)	3,082^c	3,085^c	3,155^a	3,139^ab	3,094^bc	3,134^ab	3,072^c	3,014^d	18	<0.001
ATTD of N (%)	79.8^d	80.2^cd	82.2^a	81.7^ab	80.5^bcd	81.3^abc	80.4^bcd	79.0^d	0.7	0.001
NR (%)	61.4^AB	58.7^B	63.6^A	61.1^AB	61.7^AB	60.6^AB	58.6^B	58.3^B	1.5	0.081
ATTD of ash (%)	67.7^c	72.0^a	71.6^a	70.6^ab	71.6^a	72.1^a	68.6^bc	68.3^bc	0.9	<0.001
ATTD of Ca (%)	80.9^c	85.7^a	83.4^ab	85.6^a	86.0^a	85.7^a	82.4^bc	81.7^bc	1.3	<0.001
ATTD of P (%)	67.8^d	74.7^a	71.4^bc	71.2^bc	73.4^ab	74.0^ab	67.9^d	69.3^cd	1.4	<0.001
DDGS
ATTD of DM (%)	64.7^d	66.3^cd	71.0^a	70.4^ab	67.7^bc	70.6^ab	66.6^cd	63.4^d	1.2	<0.001
DE (kcal/kg)	2,855^bc	2,894^bc	3,075^a	3,052^a	2,912^b	3,039^a	2,906^b	2,751^c	49	<0.001
ME (kcal/kg)	2,707^cd	2,739^cd	2,931^a	2,893^ab	2,769^bc	2,869^ab	2,734^cd	2,576^d	49	<0.001
ATTD of N (%)	76.8^d	77.5^cd	80.9^a	79.9^ab	78.0^bcd	79.4^abc	77.8^bcd	75.4^d	1.1	0.001
NR (%)	55.7^AB	51.1^B	59.4^A	55.2^AB	56.1^AB	54.3^AB	50.9^B	50.4^B	2.5	0.081
ATTD of ash (%)	51.4^c	57.6^a	57.2^a	56.0^ab	57.0^a	57.8^a	52.8^bc	52.1^bc	1.3	<0.001
ATTD of Ca (%)	45.1^c	59.0^a	52.2^ab	54.5^a	59.6^a	58.7^a	49.5^bc	47.2^bc	3.8	<0.001
ATTD of P (%)	64.6^d	71.0^a	68.4^abc	68.7^ab	69.1^ab	70.7^a	65.0^cd	65.3^bcd	1.6	<0.001

SEM, standard error of the mean; ATTD of DM, apparent total tract digestibility of dry matter; DE, digestible energy; ME, metabolizable energy; ATTD of N, apparent total tract digestibility of nitrogen; NR, nitrogen retention; ATTD of ash, apparent total tract digestibility of ash; ATTD of Ca, apparent total tract digestibility of calcium; ATTD of P, apparent total tract digestibility of phosphorus.

¹⁾

Each least squares mean represents 4×4 Latin square replicated pens; 16 pigs were used in this experiment.

²⁾

The values were calculated as dry matter basis.

³⁾

CON, control treatment with no enzyme supplementation; Phy, Ronozyme Hiphos (DSM, Parsippany, NJ, USA), 100 mg/kg (1,000 FTU/kg feed); Pro, Ronozyme WX (DSM, Parsippany, NJ, USA), 200 mg/kg (200 FXU/kg feed); Xyl, Ronozyme ProAct (DSM, Parsippany, NJ, USA), 200 mg/kg (15,000 PRO/kg feed); Phy+Pro, combination of phytase and protease; Phy+Xyl, combination of phytase and xylanase; Xyl+Pro, combination of xylanase and protease; Phy+Xyl+Pro, combination of phytase, xylanase, and protease.

^a–d

Within a row, means without a common superscript letter differ (p<0.05).

^A,B

Within a row, means without a common superscript letter differ (0.05≤p<0.10).