Table 5.
Effects of dietary hydrolyzed yeast on antibody titers against avian influenza (AI), Newcastle disease (ND) and infectious bronchitis (IB) virus in aged laying hens1
| Hydrolyzed yeast (%) | SEM | P values |
0 | 0.1 | 0.2 | Linear | Quadr. | ANOVA |
AI titer (log10) | 6.3b | 6.6ab | 7.4a | 0.34 | 0.016 | 0.438 | 0.041 |
ND titer (log10) | 7.6 | 7.7 | 8.0 | 0.39 | 0.373 | 0.892 | 0.660 |
IB titer | 5,844 | 4,762 | 5,037 | 753.6 | 0.429 | 0.463 | 0.578 |
Data are least square of mean of 9 birds per treatment.
Mean values within a row with different superscripts differ at P<0.05.