knabe
Well-known member
anyone ever heard of lacosis or something similar in cattle that is supposedly aids like?
can't find a reference or correct spelling.
can't find a reference or correct spelling.
lacosis sp? or aids like disease in cattle
- Thread starter knabe
- Start date
Help Support Steer Planet:
ai er
Well-known member
Do you mean bovine leukosis?
knabe
Well-known member
probably.
looks like it is transmittable via semen. too bad.
looks like it is transmittable via semen. too bad.
Bovine leukemia virus (BLV) cause bovine lymphoma, the most common neoplasia of cattle. attack lymphatic cells
Transmitted by transfer of blood, consumption of colostrum or milk and transfer across the placenta during pregnancy. Biting flies (horse and deer flies) are a proposed mechanism of transfer, but the results are not conclusive, but increasing fly prevention may reduce BLV. Diagnosis is made via serology testing.
To control BLV on-farm
• Use individual sterile needles for transdermal injection or blood collection.
Disinfect tattoo equipment between animals.
Use electric dehorners, or disinfect dehorning equipment between animals.
Replace examination gloves and sleeves between animals.
Use milk replacer to feed preweaned calves.
Heat-treat or pasteurize colostrum.
Use BLV-seronegative recipients for embryo transfer.
Wash and rinse instruments in warm water, then submerge in an appropriate disinfectant
Source of info - Large Animal Internal Medicine 4th edition ; author - Bradford P. Smith
hope this helps , if looking for more info, i can steer you in the right direction
JWW
Transmitted by transfer of blood, consumption of colostrum or milk and transfer across the placenta during pregnancy. Biting flies (horse and deer flies) are a proposed mechanism of transfer, but the results are not conclusive, but increasing fly prevention may reduce BLV. Diagnosis is made via serology testing.
To control BLV on-farm
• Use individual sterile needles for transdermal injection or blood collection.
Disinfect tattoo equipment between animals.
Use electric dehorners, or disinfect dehorning equipment between animals.
Replace examination gloves and sleeves between animals.
Use milk replacer to feed preweaned calves.
Heat-treat or pasteurize colostrum.
Use BLV-seronegative recipients for embryo transfer.
Wash and rinse instruments in warm water, then submerge in an appropriate disinfectant
Source of info - Large Animal Internal Medicine 4th edition ; author - Bradford P. Smith
hope this helps , if looking for more info, i can steer you in the right direction
JWW
knabe
Well-known member
an old bull was not eligible for export from canada because he had it. and there he will sit.
BLV (bovine leukosis virus) is a relatively common infection of cattle - just because the cow is BLV positive does not mean that she will develop lymphoma - in fact less than 2% of BLV positive cows develop lymphoma. BLV is a blood borne virus and can be transmitted as JWW said above - needles, tattoo digits, instruments for castration and dehorning, biting insects, needles etc. BLV positive animals may be restricted in terms of exportation and movement. IMHO Johne's disease is much more of a concern
VJ said:
BLV is a virus that hangs in white cells - therefore any blood containing WBCs can potentially transmit the virus. If a bull is collected by massage (and therefore getting WBCs in the semen) it is theoretically possible to have virus in the semen - transmission by AI has not been demonstrated. Eggs from BLV infected donors have been implanted and resulting calves did not have BLV - take home message - very remote possibility - I would worry about something else
