Table 7.
The effects of feeding yeast bioactives (YB) to broiler breeders and/or their offspring on intestinal lesion scores of broiler chicks challenged with Eimeria.1
| Item | Duodenum | Jejunum | Ileum | Ceca | Colon | |
|---|---|---|---|---|---|---|
| Main effect, sex | ||||||
| Male | 3.295 | 2.604 | 0.104 | 0.000 | 0.000 | |
| Female | 3.438 | 2.656 | 0.125 | 0.000 | 0.000 | |
| SEM | 0.100 | 0.086 | 0.039 | 0.000 | 0.000 | |
| Main effect, feed | ||||||
| Broiler breeder | Broiler chicks | |||||
| Control | Control | 3.208 | 2.542 | 0.042 | 0.000 | 0.000 |
| YB | Control | 3.208 | 2.563 | 0.125 | 0.000 | 0.000 |
| Control | YB | 3.490 | 2.542 | 0.125 | 0.000 | 0.000 |
| YB | YB | 3.558 | 2.875 | 0.167 | 0.000 | 0.000 |
| SEM | 0.130 | 0.111 | 0.051 | 0.000 | 0.000 | |
| Probabilities (P-value) | ||||||
| Sex | 0.275 | 0.642 | 0.681 | – | – | |
| Feed | 0.119 | 0.106 | 0.361 | – | – | |
| Sex × Feed | 0.456 | 0.154 | 0.067 | – | – | |
1
Scale: 0 (none) to 4 (high) (Johnson and Reid, 1970).
All the lesion scores of intestinal tract in unchallenged broiler chicks were zeros.