Nutritional Value and In Vitro Volatile Fatty Acid Production of Forage Grasses Cultivated Using Farmyard Manure and Desmodium intortum Intercropping in the Upper Blue Nile Basin, Ethiopia

Table 3

Results of Tukey’s tests exploring the interaction effects of forage grasses, fertilizer treatments, and year on GP24, IVOMD, and ME contents at the Aba Gerima watershed.

Factors			GP24	IVOMD	ME
Fertilizer sources	Forage grass	Year	ml 0.2 g⁻¹ DM	%	MJ kg⁻¹
Control	Desho	2019	45.0^ab	54.1^ab	9.2^a
Desm	Desho	2019	47.0^a	65.3^ab	9.0^ab
FYM	Desho	2019	44.0^b	62.6^b	8.9^ab
Desm plus FYM	Desho	2019	47.3^a	66.0^a	8.7^b
Control	Desho	2018	30.1^d	50.3^def	7.2^de
Desm	Desho	2018	28.2^de	48.9^efg	6.8^ef
FYM	Desho	2018	33.3^c	53.1^cd	7.5^cd
Desm plus FYM	Desho	2018	34.8^c	54.1^c	7.6^c
Control	Napier	2019	29.0^d	50.5^de	6.9^e
Desm	Napier	2019	34.0^c	54.7^c	6.4^g
FYM	Napier	2019	30.0^d	51.1^de	6.9^e
Desm plus FYM	Napier	2019	34.0^c	55.0^c	7.4^cd
Control	Napier	2018	23.4^f	45.2^h	6.3^g
Desm	Napier	2018	25.1^f	46.3^gh	6.4^g
FYM	Napier	2018	24.3^f	45.4^h	6.3^g
Desm plus FYM	Napier	2018	25.8^ef	47.5^fgh	6.5^fg
Overall mean			33.5	53.8	7.43
SEM			0.565	0.397	0.075
-values			0.0015	0.0134	0.0196
CV (%)			2.9	1.8	1.7

Means with different superscript letters in a column are significantly different (). Abbreviations: CV, coefficient of variation; Desm, Desmodium intortum; F, fertilizer treatments; FYM, farmyard manure; GP24, 24-h gas production; IVOMD, in vitro organic matter digestibility; ME, metabolizable energy; SEM, standard error of mean.