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.