Table 2.
Protection efficacy of IgY against experimental infection of E.tenella in chickens
| Group | survival rate (%) | Average body weight gain(g) | Relative body weight gain (%) | Mean leison scores | Oocyst output per chick (×10 6) | Decrease ratio of oocyst(%) | Anticoccidial index |
|---|---|---|---|---|---|---|---|
| IgY(0.01%) | 90 | 90.33±10.02a | 49.91 | 3.50±0.17ef | 9.025 | 27.43 | 84.91 |
| IgY(0.02%) | 95 | 97.00±10.58 ab | 53.59 | 3.29±0.24 ef | 7.789 | 37.37 | 95.69 |
| IgY(0.05%) | 100 | 114.67±11.37bc | 63.35 | 3.13±0.26 e | 7.146 | 42.54 | 112.05 |
| IgY(0.10%) | 100 | 132.00±6.25c | 72.93 | 2.69±0.37 d | 6.139 | 50.64 | 136.03 |
| IgY(0.50%) | 100 | 155.67±11.59d | 86.01 | 2.21±0.17c | 5.283 | 57.52 | 154.00 |
| IgY(1.00%) | 100 | 162.00±14.80de | 89.50 | 1.91±0.13bc | 4.074 | 67.46 | 160.40 |
| Sodium Salinomycin(0.006%) | 100 | 171.67±15.37de | 94.85 | 1.78±0.17b | 2.199 | 82.32 | 172.05 |
| Challenged control | 90 | 86.33±10.60 a | 47.70 | 3.59±0.13f | 12.437 | 0 | 61.8 |
| Unchallenged control | 100 | 181.00±13.08e | 100.00 | 0 a | 0 | 0 | 200 |
Note: data with different letters are significantly different at P<0.05.