Table 3.
Effects of adding different levels of COS to the diet on nutrient disappearance rates and total gas production of rumen nutrients in beef cattle.
| Items | Dietary COS Level, Feeding Basis | SEM | p-Value | |||||
|---|---|---|---|---|---|---|---|---|
| CON | 0.02% COS |
0.04% COS |
0.08% COS |
Main Effect | Linear | Quadratic | ||
| Nutritional Components Apparent Disappearance Rates (%) | ||||||||
| DM | 77.44 c | 77.48 c | 77.81 b | 78.42 a | 0.151 | <0.01 | 0.587 | <0.01 |
| OM | 65.28 c | 65.32 bc | 65.66 b | 66.23 a | 0.165 | <0.01 | 0.444 | <0.01 |
| CP | 73.04 c | 73.67 bc | 73.99 b | 74.93 a | 0.305 | <0.01 | 0.549 | <0.01 |
| EE | 64.25 c | 64.63 c | 65.66 b | 66.23 a | 0.217 | <0.01 | 0.749 | <0.01 |
| NDF | 53.71 | 53.66 | 53.45 | 53.81 | 0.434 | 0.863 | 0.709 | 0.920 |
| ADF | 52.02 b | 52.27 b | 52.55 ab | 53.08 a | 0.361 | <0.05 | 0.877 | 0.062 |
| Total gas production (L/d) | ||||||||
| Day6 | 7.82 a | 7.74 a | 7.61 b | 7.52 b | 0.066 | <0.01 | <0.01 | <0.05 |
| Day7 | 7.86 a | 7.79 a | 7.64 b | 7.55 b | 0.068 | <0.01 | <0.01 | <0.05 |
| Day8 | 7.76 a | 7.69 ab | 7.55 bc | 7.47 c | 0.071 | <0.01 | <0.01 | <0.05 |
In the table, the superscript “a–c” represents the differences in data between the treatment groups. Different letters indicate differences between the groups (p < 0.05), while the same or no letters indicate no significant differences (p > 0.05); SEM, standard error of the mean. DM, dry matter; OM, organic matter; CP, crude protein; EE, ether extract; NDF, neutral detergent fibre; ADF, acid detergent fibre.