Analysis of colostral antibodies to herpesvirus 1 and 5 in Murrah buffalo calves
DOI:
https://doi.org/10.56825/bufbu.2024.4334915Keywords:
Bubalus bubalis, buffaloes, herpesvirus-5, herpesvirus-1, virus disease, colostrum, feeding with colostrumAbstract
Familiar agriculture is predominant in the production of milk buffaloes in São Paulo southwest, Brazil. The production of buffaloes’ milk is sold almost exclusively to cheese production inside and out São Paulo State. This search was done in a proprerty located in Alambari, São Paulo, specialized in the production of Murrah buffaloes, with 21 animals, born between March and May in the year 2017. Blood was collected at 24 to 48 h from the birth, every 15 days and at the completetion of weaning (91 days of age). The samples were collected in vaccum tubes of 10 mL with coagulum activator, by a puncture of the jugular vein. With the application of the virus neutralization tests, we could see 90.47% reagent animals for BoHV-5 and or BoHV-1 in the first two days of life. The geometric medium titles (GMT) of antibodies reduced significantly from the time 0 (1.4563) to the time 6 (05721) (P=0.0001), showing adequate transference of passive immunity through the ingestion of colostrum by buffalo calves, with the persistence of antibodies until 3 months old. Considering that most buffalo calves were reagents after sucking the colostrum, it is possible to conclude that there is a great occurrence of BoHV-5 and or BoHV-1 once there is a crossed reaction among these and the cattle with no historic of vaccination for the agents.
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