Show black dlack blackleg leg vaccination A woodbury county iowa reader sends us the following inquiry how old should a calf be to vaccinate for blackleg black leg Is the pill as aa good us the serum Is there any remedy after an animal once shows symptoms it if you vaccinate when the calf Is small should you vaccinate again before it Is two years old calves may safely be vaccinated vaccina ted for blackleg black leg at any age but the immunity resulting Is not permanent if they are under six months of age and they should be as yearlings yearnings year lings at least serum Is used as a curative treatment after animals are affected but Is not entirely satisfactory veterinarians erin arians are using aggress in preference to the pill or spore form wallaces farmer |