. 2022 Jun 23;6(2):txac075. doi: 10.1093/tas/txac075

Table 5.

Degradability constants and calculated effective degradability at three passage rates for dry matter disappearance of Napier grass silage after 90 days of ensiling

Fertilization	Additives	N	Degradability constants (%)				ED (%) at different outflow rates
Fertilization	Additives	N	a	b	c	a + b	k = 0.02	k = 0.05	k = 0.08
No slurry	No-additive	6	18.0^abc	55.2^c	0.005	73.2^d	55.4	44.2	38.1
	Molasses	6	16.9^abc	80.3^a	0.007	97.2^a	68.3	52.9	44.6
	Maize meal	6	21.7^a	74.4^ab	0.008	96.1^ab	69.1	54.9	47.3
	Brown sugar	6	16.1^bc	65.7^b	0.016	81.8^cd	57.4	44.9	38.2
Slurry	No-additive	6	14.5^c	71.9^ab	0.008	86.4^bc	60.3	46.6	39.2
	Molasses	6	21.5^a	74.1^ab	0.008	95.6^ab	72.1	56.9	48.7
	Maize meal	6	20.4^ab	73.5^ab	0.004	93.9^ab	67.5	53.3	45.7
	Brown sugar	6	19.6^abc	73.0^ab	0.010	92.6^ab	65.9	52.0	44.5
SEM			1.10	2.28	0.0047	2.30	2.21	1.81	1.61
Fertilization
No slurry		24	18.2	68.9^b	0.009	87.1^b	62.5^b	49.2^b	42.1^b
Slurry		24	19.0	73.1^a	0.008	92.1^a	66.4^a	52.2^a	44.5^a
SEM			0.55	1.14	0.0023	1.15	1.10	0.90	0.80
Additive
	No-additive	12	16.3^b	63.5^c	0.007	79.8^c	54.9^b	45.4^b	38.7^b
	Molasses	12	19.2^ab	77.2^a	0.008	96.4^a	70.2^a	54.9^a	46.6^a
	Maize meal	12	21.0^a	74.0^ab	0.006	95.0^a	68.3^a	54.1^a	47.3^a
	Brown sugar	12	17.8^ab	69.4^bc	0.013	87.2^b	61.6^b	48.5^b	41.4^b
SEM			0.78	1.61	0.0033	1.62	1.56	1.28	1.14
Significance
	Fertilization (F)		ns	^*	ns	^**	^*	^*	^*
	Additives (A)		^**	^**	ns	^**	^**	^**	^**
	F x A		^**	^**	ns	^**	Ns	Ns	ns

a, soluble fraction; b, insoluble but potentially degradable fraction; a + b, potential degradability; c, outflow rate of degradation (h⁻¹); ED, effective degradability; k, rumen outflow rate (h⁻¹); N, number of observations; %, percentage; SEM, standard error mean.

Column means with different superscripts differ significantly at P < 0.05.

**P < 0.01; *P < 0.05; ns, non-significant: P > 0.05.