Table 2.
Effects of yeast supplementation on growth performance parameters in the growing lambs.
| Variables2 | Period | Treatments1 (yeast, g/lamb) | SEM | p-value | Contrast | |||
|---|---|---|---|---|---|---|---|---|
| YS0.00 | YS1.500 | YS3.00 | Linear | Quadratic | ||||
| DFI (g) | Weeks 0–4 | 1160.00 | 1205.00 | 1180.00 | 27.700 | 0.350 | 0.153 | 0.105 |
| Weeks 5–8 | 1656.00 | 1677.00 | 1652.00 | 28.100 | 0.790 | 0.239 | 0.190 | |
| Overall (0–8) | 1427.00 | 1452.00 | 1423.00 | 29.300 | 0.810 | 0.192 | 0.166 | |
| ADG (g) | Weeks 0–4 | 277.00 | 339.00 | 303.00 | 19.000 | 0.130 | 0.093 | 0.060 |
| Weeks 5–8 | 335.00 | 284.00 | 313.00 | 17.700 | 0.530 | 0.401 | 0.305 | |
| Overall (0–8) | 308.00 | 310.00 | 308.00 | 16.600 | 0.990 | 0.45 | 0.476 | |
| ADRGHI | Weeks 0–4 | 300.00 | 337.00 | 309.00 | 14.200 | 0.120 | 0.110 | 0.082 |
| Weeks 5–8 | 274.00b | 303.00a | 306.00a | 8.980 | 0.020 | 0.024 | 0.051 | |
| Overall (0–8) | 286.00b | 319.00a | 307.00ab | 8.290 | 0.010 | 0.025 | 0.059 | |
| ADTMRI | Weeks 0–4 | 854.00 | 868.00 | 871.00 | 20.050 | 0.790 | 0.702 | 0.679 |
| Weeks 5–8 | 1382.00 | 1374.00 | 1346.00 | 21.820 | 0.500 | 0.567 | 0.532 | |
| Overall (0–8) | 1134.00 | 1133.00 | 1116.00 | 20.520 | 0.910 | 0.976 | 0.622 | |
| FCR3 | Weeks 0–4 | 4.71 | 4.22 | 4.51 | 0.360 | 0.570 | 0.689 | 0.536 |
| Weeks 5–8 | 6.41a | 7.46a | 5.84b | 0.320 | 0.050 | 0.091 | 0.050 | |
| Overall (0–8) | 5.63 | 5.92 | 5.20 | 0.290 | 0.270 | 0.689 | 0.636 | |
1Treatments: YS0.00, YS1.50, and YS3.00 represent 0.00, 1.50, and 3.00 g/animal, respectively. 2DFI is daily feed intake; ADG is average daily gain; ADRGHI is average daily Rhodes grass hay intake; ADTMRI is average daily TMR intake; FCR is feed conversion ratio. a and b Means within the same row with different superscripts are significantly different at a p-value of <0.05 due to the effect of treatment alone. 3FCR was calculated as the ratio of DFI to ADG.