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Seronegative cattle should be selected for breeding.
Seronegative cattle should be selected for breeding.
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[[vaccine|Vaccination]] is possible but only in the USA.
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[[Vaccines|Vaccination]] is possible but only in the USA.
It is a killed protozoal vaccine for healthy, pregnant cows and is given in the first 3 weeks of pregnancy and then every 3-4 weeks during gestation.
It is a killed protozoal vaccine for healthy, pregnant cows and is given in the first 3 weeks of pregnancy and then every 3-4 weeks during gestation.
Revaccination with 2 doses should be undertaken during each subsequent pregnancy.
Revaccination with 2 doses should be undertaken during each subsequent pregnancy.