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.