The effect of increased atmospheric temperature and CO2 concentration during crop growth on the chemical composition and in vitro rumen fermentation characteristics of wheat straw

Table 2 Effects of CO₂ and temperature treatments on DM, NDF and ADF digestibility at 24 and 48 h of wheat straw

Index¹, g/100 g	Time, h	CK	CO₂	TEM	CO₂ + TEM	S.E.M	P- Value²
DMD	24	16.41 ± 0.44^a	14.88 ± 0.47^ab	15.73 ± 0.60^ab	14.60 ± 0.56^b	0.31	ns
DMD	48	26.26 ± 0.63	25.43 ± 0.69	26.15 ± 0.55	24.32 ± 0.52	0.35	ns
NDFD	24	17.72 ± 0.49^a	16.67 ± 0.32^ab	17.02 ± 0.29^ab	16.45 ± 0.41^b	0.22	ns
NDFD	48	32.59 ± 0.79	31.39 ± 0.56	31.55 ± 0.70	30.49 ± 1.12	0.41	ns
ADFD	24	12.24 ± 0.91	11.03 ± 0.55	10.82 ± 0.50	10.39 ± 0.44	0.34	ns
ADFD	48	28.69 ± 1.20	27.36 ± 0.66	27.50 ± 0.74	26.35 ± 0.40	0.42	ns

¹ DMD dry matter digestibility; NDFD Neutral detergent fiber digestibility; ADFD Acid detergent fiber digestibility
²ns = non-significant (P > 0.05)
^a,bValues within a column with different superscript letters are significantly different (P < 0.05)

ISSN: 2049-1891