. 2019 Dec 17;98(12):6618–6625. doi: 10.3382/ps/pez508

Table 3.

Litter and manure composition as affected by dietary protein level (CP) and age at sampling.

Item	Total-N (g/kg DM)	Ammonia-N (g/kg DM)	DM (g/kg)	Ash (g/kg)	pH
CP level¹
CPh	36.2^a	6.4^a	556	181	7.6
CPl	33.2^b	5.6^b	568	190	7.6
SEM	0.58	0.21	14.6	3.3	0.06
P-value	<0.001	0.014	0.59	0.064	0.73
Location²
Litter	36.5^a	6.5^a	601^a	187	7.8^a
Manure	32.8^b	5.5^b	523^b	184	7.4^b
SEM	0.58	0.21	12.5	3.3	0.06
P-value	<0.001	0.002	<0.001	0.55	<0.001
Age
34 wk	35.5	8.7^a	456^b	153^b	8.5^a
44 wk	33.8	5.0^b	609^a	196^a	7.1^b
54 wk	34.7	4.3^b	622^a	207^a	7.2^b
SEM	0.71	0.25	14.4	4.0	0.07
P-value	0.23	<0.001	<0.001	<0.001	<0.001

^{^a,b}

Means within a column and within a source without a common superscript differ significantly (P < 0.05).

^¹

CPh = high dietary protein level; CPl = low dietary protein level.

^²

Litter = sample from the litter; manure = sample from the manure under the slatted floor.