Table 1.

Nutritional parameters and cannabinoids profile of the experimental diets (on DM basis).

Parameter	Control 0% hemp stubble	Hemp 1 28% hemp stubble	Hemp 2 56% hemp stubble
Dry matter, g/kg as fed	94.7	92.6	92.2
Metabolisable energya, MJ/kg DM	9.9	9.1	9.6
Dry matter digestibility,%	67.3	62.7	65.3
Crude protein, g/100 g DM	8.7	10.3	10.6
Organic matter, g/100 g DM	93.3	94.8	95.8
Neutral detergent fiber g/100 g DM	40.8	45.0	40.86
Acid detergent fiber, g/100 g DM	24.5	31.0	28.0
Lignin, g/100 g DM	2.7	4.3	3.6
Polyphenolics, mg/kg DM	3520	2960	2400
Cannabichromene (CBC), % w/w	<0.001	<0.001	<0.001
Cannabidiol (CBD), % w/w	<0.001	<0.001	<0.001
Cannabidiolic acid (CBDA), % w/w	<0.001	<0.001	<0.001
Cannabidivarin (CBDV), % w/w	<0.001	<0.001	<0.001
Cannabigerol (CBG), % w/w	<0.001	<0.001	<0.001
Cannabigerolic acid (CBGA), % w/w	<0.001	<0.001	<0.001
Cannabino1 (CBN), % w/w	<0.001	<0.001	<0.001
Δ 8-Tetrahydrocannabinol (Δ 8-THC), % w/w	<0.001	<0.001	<0.001
Δ 9-Tetrahydrocannabinol (Δ 9-THC), % w/w	<0.001	0.001	<0.001
Tetrahydrocannabinolic acid (THCA), % w/w	<0.001	0.001	0.002
Tetrahydrocannabivarin (THCV), % w/w	<0.001	<0.001	<0.001
Total cannabidiol (CBD), % w/w	<0.001	<0.001	<0.001
Total tetrahydrocannabinol (THC) (%)	<0.001	0.002	0.002

^a Metabolisable energy calculated using the formula: ME = 0.164 × (%DMD + %Fat) − 1.6 (Oddy et al., 1983).

Dry matter digestibility calculated using the formula: DMD = 83.58 − (NDF × 0.824) + (protein × 0.42) (Oddy et al., 1983).

“<” signifies a result is less than the limit of quantitation for the method.

Total THC calculated based upon THC + 0.877 × THCA.

Total CBD calculated based upon CBD + 0.877 × CBDA.