TABLE 3.
Dry matter (DM, g/kg) and microbial counts (log10 colony-forming units/g fresh weight) of whole-plant corn silage during the intense fermentation phase.
Items | CK | CSL | ESL | SEM | P value | Interaction |
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T | A | T × A | |||||||
DM | A | 385 | 369ab | 372b | 5.1200 | 0.1141 | *** | * | |
3 h | 386 | 375a | 379ab | 6.1616 | 0.4881 | ||||
5 h | 392A | 359abB | 377abA | 4.8634 | 0.0035 | ||||
10 h | 388A | 348bB | 380abA | 3.3344 | <0.0001 | ||||
24 h | 391A | 365abB | 391aA | 4.6015 | 0.0048 | ||||
2 days | 379 | 374a | 375ab | 3.5375 | 0.5541 | ||||
3 days | 382 | 371ab | 379ab | 4.6533 | 0.2643 | ||||
SEM | 4.2870 | 5.8195 | 3.7257 | ||||||
P value | 0.3695 | 0.0420 | 0.0573 | ||||||
pH | A | 6.14aA | 6.03aAB | 5.94bB | 0.0340 | 0.0080 | *** | *** | *** |
3 h | 5.95bB | 5.94bB | 6.02aA | 0.0129 | 0.0036 | ||||
5 h | 5.58c | 5.63c | 5.53c | 0.0235 | 0.0550 | ||||
10 h | 5.11dA | 5.10dA | 4.89dB | 0.0463 | 0.0135 | ||||
24 h | 4.63eA | 4.53eB | 4.58eAB | 0.0178 | 0.0137 | ||||
2 d | 4.25fA | 4.04fC | 4.14fB | 0.0090 | <0.0001 | ||||
3 d | 4.01gA | 3.83gB | 3.86gB | 0.0109 | <0.0001 | ||||
SEM | 0.0243 | 0.0275 | 0.0244 | ||||||
P value | <0.0001 | <0.0001 | <0.0001 | ||||||
Lactic acid bacteria | A | 6.59d | 6.68d | 6.55d | 0.1023 | 0.6735 | *** | *** | *** |
3 h | 6.78dB | 7.24cA | 7.30cA | 0.1039 | 0.0123 | ||||
5 h | 8.35cB | 8.76bA | 9.00bA | 0.0924 | 0.0024 | ||||
10 h | 8.70bB | 9.37aA | 9.41aA | 0.0530 | <0.0001 | ||||
24 h | 9.24aB | 9.44aA | 9.57aA | 0.0488 | 0.0028 | ||||
2 days | 9.26aB | 9.41aA | 9.44aA | 0.0454 | 0.0448 | ||||
3 days | 9.26a | 9.52a | 9.46a | 0.0700 | 0.0597 | ||||
SEM | 0.0744 | 0.0797 | 0.0780 | ||||||
P value | <0.0001 | <0.0001 | <0.0001 | ||||||
Yeast | A | 6.90f | 7.05d | 6.90d | 0.1098 | 0.5425 | *** | *** | *** |
3 h | 6.84f | 7.00d | 6.78d | 0.0920 | 0.2630 | ||||
5 h | 7.17eB | 7.77cA | 7.38cB | 0.0996 | 0.0065 | ||||
10 h | 7.63dB | 8.24bA | 8.15bA | 0.0734 | 0.0005 | ||||
24 h | 8.10cC | 8.27bB | 8.42aA | 0.0444 | 0.0022 | ||||
2 days | 8.36bB | 8.42bA | 8.43aA | 0.0120 | 0.0053 | ||||
3 days | 8.62aC | 8.78aA | 8.68aB | 0.0097 | <0.0001 | ||||
SEM | 0.0776 | 0.0659 | 0.0770 | ||||||
P value | <0.0001 | <0.0001 | <0.0001 | ||||||
Coliforms | A | 7.22a | 7.42a | 7.53a | 0.0751 | 0.0504 | *** | ||
3 h | 7.54a | 7.37a | 7.64a | 0.1017 | 0.2256 | ||||
5 h | 7.39a | 7.49a | 7.61a | 0.0775 | 0.1830 | ||||
10 h | 7.71a | 7.73a | 7.87a | 0.0628 | 0.1986 | ||||
24 h | 7.65aA | 7.42aB | 7.69aA | 0.0603 | 0.0223 | ||||
2 days | 5.77bA | 4.31bB | 5.79bA | 0.0954 | <0.0001 | ||||
3 days | 3.23c | 3.37b | 2.67c | 0.7648 | 0.7929 | ||||
SEM | 0.1781 | 0.4451 | 0.1935 | ||||||
P value | <0.0001 | <0.0001 | <0.0001 | ||||||
Bacteria | A | 7.61f | 8.28c | 7.86e | 0.2377 | 0.1853 | *** | *** | *** |
3 h | 7.70ef | 7.80d | 7.84e | 0.0526 | 0.2051 | ||||
5 h | 7.88eB | 8.70bcA | 8.77dA | 0.0614 | <0.0001 | ||||
10 h | 8.27dB | 8.91abA | 8.97cA | 0.0285 | <0.0001 | ||||
24 h | 8.94c | 9.14ab | 9.21b | 0.0920 | 0.1559 | ||||
2 days | 9.19bB | 9.40aA | 9.47aA | 0.0524 | 0.0112 | ||||
3 days | 9.39a | 9.45a | 9.51a | 0.0796 | 0.5857 | ||||
SEM | 0.0639 | 0.1621 | 0.0673 | ||||||
P value | <0.0001 | <0.0001 | <0.0001 |
Values with different lowercase letters (a, b,… g) indicate significant differences among anaerobic state, 3 h, 5 h, 10 h, 24 h, 2 days, and 3 days after ensiling of each treatment. Values with different uppercase letters (A, B, and C) indicate significant differences among treatments on the same time during the intense fermentation phase. CK, whole-plant corn silage without any lactic acid bacterial suspensions; CSL, whole-plant corn silage treated with lactic acid bacterial suspensions prepared from whole-plant corn silage; ESL, whole-plant corn silage treated with lactic acid bacterial suspensions prepared from Elymus sibiricus silage. A, anaerobic state. SEM, standard error of means. *, P < 0.05; ***, P < 0.001.