| 摘要 |
FIELD: agriculture; veterinary. ^ SUBSTANCE: for 6 months old calves, ligphol is intramuscularly injected in two single cycles once a month, for total of 3 month. First cycle dose is 5.0 ml, and second cycle dose is 10.0 ml. Additionally, 100.0 mg of succinic acid are injected once per day, for 10 days with 10-day intervals, for overall period of 6 months. ^ EFFECT: high level of immunobiological protection and prevention of positive immunodiffusion tests. ^ 3 tbl, 1 ex
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