Journal of Animal Science and Biotechnology

Table 7 The effect on replacing alfalfa silage with paulownia leaves silage (60 g/kg) on milk production performance and methane concentration of commercial dairy cows (n = 16) (Exp. 3)

From: The effect of ensiled paulownia leaves in a high-forage diet on ruminal fermentation, methane production, fatty acid composition, and milk production performance of dairy cows

Item	Treatments^a		SEM	P-value^b
Item	CON	PLS	SEM	P-value^b
DM intake	23.5	22.9	0.16	0.11
Milk yield
Milk, kg/d	33.9	32.5	0.46	0.08
ECM^c, kg/d	35.5	33.8	0.67	0.17
Fat, g/d	1349	1201	68.2	0.23
Protein, g/d	896	831	16.5	0.02
Lactose, g/d	1296	1189	23.5	0.01
Milk composition
Fat, g/kg	43.8	44.0	0.99	0.91
Protein, g/kg	34.1	33.4	0.16	0.03
Lactose, g/kg	49.3	47.9	0.28	0.01
Urea, mg/L	224	249	3.06	0.02
Methane, µg/L	211	185	7.1	< 0.01

^aCON Control diet, PLS Paulownia leaves silage diet
^bThe results are considered to be significantly different at P ≤ 0.05
^cEnergy corrected milk calculated according the following equation: ECM = milk yield (kg) × (38.3 × fat (g/kg) + 24.2 × protein (g/kg) + 783.2)/3.140 [23]

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ISSN: 2049-1891

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