Table 3. Effect of harvest time on chemical composition and feed value of raw material of rye

Items Harvest time SEM p-value
April 30 (Boot) May 9 (Heading) May 15 (Blooming)
DM (g/kg) 155.00a 165.67a 189.93b 15.21 0.002
CP (g/kg) 116.46a 89.60b 76.11c 8.42 < 0.001
ADF (g/kg) 255.50c 348.63b 405.93a 3.76 < 0.001
NDF (g/kg) 499.83c 599.93b 673.07a 5.39 < 0.001
IVDMD (g/kg) 871.17a 825.13b 715.23c 15.74 0.003
WSC (g/kg) 206.11a 102.23b 80.56b 11.64 0.034
TDN (%) 68.72a 61.36b 56.83c 1.08 0.027
RFV 128a 96b 79c 5.24 0.008
Means within a column with different superscripts differ (p < 0.05).
DM, dry matter; CP, crude protein; ADF, acid detergent fiber; NDF, neutral detergent fiber; IVDMD, in vitro dry matter digestibility; WSC, water soluble carbohydrates; TDN, total digestible nutrient; RFV, relative feed value.