. 2014 Jun;27(6):797–805. doi: 10.5713/ajas.2013.13560

Table 2.

Apparent in vitro DM and OM digestibility of level of CP in concentrate and concentrate levels

Feeds	DM digestibility (%)			OM digestibility (%)

	4 h	24 h	48 h	4 h	24 h	48 h
CP level in concentrate (%)
10	18.5	64.6	80.8	21.4	66.7	81.5
13	18.8	63.7	81.2	19.3	66.5	81.4
16	20.3	65.6	81.1	20.4	67.1	81.2
19	20.7	66.3	78.7	20.9	66.7	79.2
SEM	0.68	1.03	0.82	1.14	1.02	0.81
Contrast^e
L	ns	ns	ns	ns	ns	ns
Q	ns	ns	ns	ns	ns	ns
Roughage to concentrate ratios
80:20	15.0^a	52.5^a	60.3^a	15.1^a	53.0^a	60.7^a
60:40	17.2^b	58.5^b	67.8^b	18.8^b	59.2^b	68.1^b
40:60	19.0^bc	61.1^b	73.7^c	20.8^b	62.1^b	74.2^c
20:80	20.4^c	65.4^c	77.8^d	21.0^b	65.4^c	78.1^d
SEM	0.67	1.24	0.47	0.83	1.31	0.51
Contrast
L	^***	^***	^***	^***	^***	^***
Q	ns	ns	^**	ns	ns	^**

^a,b,c,d

Values within a column with different superscript letters are significantly different (p<0.05).

L, linear; Q, quadratic; ns = non-significant.

^**

p<0.01,

^***

p<0.001.