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Lepto - Katpau
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<blockquote data-quote="Katpau" data-source="post: 1227008" data-attributes="member: 9933"><p>Thank you Inyati,</p><p>I had used Virashield 6 + VL5 a killed vaccine from Novartis. The bottle said vaccinate 2 to 4 weeks prior to breeding. Vaccinations were given on May 14th and bulls were turned out May 16th. A small number of cows were AI'd on May 15th. From those instructions it does not seem like my vaccination program was too far off. My Vet recommends giving the Lepto vaccine half way through pregnancy, however. The calves I lost included a 65 pound bull out of a 3 year old cow who was bred AI, and a 78 pound heifer out of a 4 year old cow. The four year old was bull bred and it was 270 days since the bull was turned out. The AI bred cow aborted on day 258 of gestation. If I remember correctly the Vet said titers on the cow who had calved 3 days prior were at 1600 and the cow who had lost her calf two weeks prior was at 800. I think he said it was Hardjo that tested high. All others types of Lepto had very low titers. I don't know for sure if this is the reason for those dead calves. The lungs of the one we did a necropsy on were full of blood. The other organs appeared normal. None of my cows ever showed any signs of illness, and all are in good condition. We have had about a dozen live healthy calves since those two and are still only 284 days from bull turn out. I am hoping there will be no more stillborn calves, but I am pretty nervous. We have had the same thing happen the last few years. We start the calving season with a few early born dead calves. I would really like to figure this out.</p></blockquote><p></p>
[QUOTE="Katpau, post: 1227008, member: 9933"] Thank you Inyati, I had used Virashield 6 + VL5 a killed vaccine from Novartis. The bottle said vaccinate 2 to 4 weeks prior to breeding. Vaccinations were given on May 14th and bulls were turned out May 16th. A small number of cows were AI'd on May 15th. From those instructions it does not seem like my vaccination program was too far off. My Vet recommends giving the Lepto vaccine half way through pregnancy, however. The calves I lost included a 65 pound bull out of a 3 year old cow who was bred AI, and a 78 pound heifer out of a 4 year old cow. The four year old was bull bred and it was 270 days since the bull was turned out. The AI bred cow aborted on day 258 of gestation. If I remember correctly the Vet said titers on the cow who had calved 3 days prior were at 1600 and the cow who had lost her calf two weeks prior was at 800. I think he said it was Hardjo that tested high. All others types of Lepto had very low titers. I don't know for sure if this is the reason for those dead calves. The lungs of the one we did a necropsy on were full of blood. The other organs appeared normal. None of my cows ever showed any signs of illness, and all are in good condition. We have had about a dozen live healthy calves since those two and are still only 284 days from bull turn out. I am hoping there will be no more stillborn calves, but I am pretty nervous. We have had the same thing happen the last few years. We start the calving season with a few early born dead calves. I would really like to figure this out. [/QUOTE]
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