| Autor: |
Box, P. G., Furminger, I. G. S., Robertson, W. W., Warden, D. |
| Zdroj: |
Avian Pathology; January 1976, Vol. 5 Issue: 4 p307-314, 8p |
| Abstrakt: |
Turkey poults possessing maternally-derived antibody to Newcastle disease respond poorly, in terms of haemagglutination inhibiting (HAI) antibody response, to vaccination within the first 4 weeks of life. This unsatisfactory effect occurs both with live La Sota vaccine administered by intraocular/intranasal instillation or with killed oil emulsion adjuvant vaccine given by intramuscular injection. Re-vaccination of these birds with killed emulsion vaccine at 4 or 6-weeks-old indicates that they have become sensitised by either method of primary vaccination and results in the establishment within 4 weeks of high (8-9 log2) and prolonged HAI antibody levels. Further vaccination at 29-weeks-old raises the levels from 5 log2 to 10-11 log2. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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