Table 2 Production data from trial 1 and 2 with comparison to Ross performance objectives as hatch
Trial 1 | Trial 2 | Ross 308 Performance objectives (as hatch) [9] | |||||
|---|---|---|---|---|---|---|---|
Control | Probiotic | p-value | Control | Probiotic | p-value | ||
Flock size | 22,000 | 21,700 | 24,100 | 24,200 | NA | ||
Breeder age (weeks) | 28 | 28 | 60 | 60 | NA | ||
First week mortality % | 1.9a | 0.5b | < 0.0001 | 1.2 | 1.4 | 0.1009 | NA |
Total mortality % | 3.8a | 2.4b | < 0.0001 | 3.3 | 3.6 | 0.0656 | NA |
FCR | 1.42 | 1.39 | 1.39 | 1.38 | 1.38 | ||
EPEF | 411 | 448 | 436 | 446 | NA | ||
Bodyweight day 7 (grams) | 185 | 187 | 205 | 205 | 213 | ||
Body weight day 34 (grams) | 2061 | 2173 | 2140 | 2178 | 2196 | ||