Table 1.

Nutritional characteristics (% of DM) of the rations used in the study

	Control	BC1
Ingredient2	g/kg, as-fed basis
Alfalfa	60	54.5
Barley	40	43.5
Biochar	—	2
Composition of the diets	DM basis
CP, %	15.6 ± 0.23	14.8 ± 0.4
ADF, %	27.7 ± 1.3	26.3 ± 0.8
NDF, %	34.8 ± 0.7	33.4 ± 0.4
ADL, %	6.4 ± 0.3	6.7 ± 0.3
NDFD (30 h),4 %	13.5 ± 0.7	12.7 ± 0.5
NDFD (30 h)_NDF,5 %	38.9 ± 1.9	37.9 ± 1.2
DE,6 Mcal/kg	3.05	3.05

¹BC, diet containing biochar.

²All ingredients were ground to a particle size of 2 to 4 mm.

³SEM composited across two periods (P1 and P2).

⁴In vitro NDF digestibility at 30 h.

⁵NDFD as a percentage of NDF.

⁶Calculated based on values obtained from NRC (1985).