Studies on antibody enhancement to newcastle disease vaccine in broiler chickens in a Nakornpathom [Thailand] farm by using levamisole and oil adjuvant vaccine
1981
Prachak Poomvises | Jiroj Sasipreeyajan | Achara Tawatsin
Six thousand commercial broiler chickens in a commercial farm in Nakornprathom province were divided into three groups of 2000 birds. The birds of all three groups were given B1 strain of ND Vaccine via eye drops when they were 10 days old. In addition, the first, second and third groups of birds were inoculated with 0.3 ml/bird of 1.0% levamisole, oil adjuvant ND vaccine and normal salines respectively using subcutaneous injection. Sera collected from these birds when they were 23, 32 and 42 days old, were assay for HI titres and found that the HI titres from the oil adjuvant vaccine group were higher than those of levamisole and normal saline treated groups, whereas the levamisole treated group gave higher HI titres than those of saline treated group.
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