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mucosal damage, thereby preventing or minimizing clinical disease. Because administration of adsorbents to foals coincides with the period of passive transfer of colostral antibodies, 31–33 the effect of adsorbents on immunoglobulin (IgG) absorption must

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in American Journal of Veterinary Research

ad libitum starting at 21 days of age and continuing until the conclusion of the study. Six colostrum-deprived Holstein bull calves were purchased from a large commercial dairy farm in Indiana. At the farm, calves were removed from the dams

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in American Journal of Veterinary Research

responses to both the viral surface and core antigens. Consequently, serologic tests for BLV performed on calves that ingest colostrum from BLV-infected cows will yield positive results, regardless of the infection status of the calves. Results of a previous

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in American Journal of Veterinary Research

. Materials and Methods Animals —Colostrum-deprived Holstein bull calves were procured from a local dairy at birth. Calves were raised for the first 2 weeks after birth in individual crates. Calves were fed a commercial infant formula a for the first 48

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in American Journal of Veterinary Research

are based on preventing transmission from adult cattle that shed MAP organisms in feces to young replacement stock on the farm. Control programs specifically focus on management of the birthing area (calving pen), feeding management for colostrum and

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in American Journal of Veterinary Research

dams within 1 hour after birth and fed 4 L of colostrum that was collected from their own dam. Calves were housed in individual pens and fed milk replacer and calf-starter grain throughout the study. Calves were randomly assigned (in blocks) to the

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in American Journal of Veterinary Research

calves at birth or to pregnant cows to induce production of anti-BCV antibodies in colostrum. Although all BCV isolates are believed to belong to a single serotype, 8–12 results of a 2013 study 13 suggest that there may be differences in seroreactivity

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in American Journal of Veterinary Research

questionnaire addressed farm type and size, biosecurity management (animal introduction onto the farm), antimicrobial treatments of cows, calving and colostrum management, type of calf housing and cleaning of housing, calf feeding management, and the use of

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in American Journal of Veterinary Research

,36 Yet the passive transfer of immunoglobulins via colostrum or plasma transfusion could be helpful in providing initial protection in the airways before R equi reaches the intracellular environment and until a foal's own cellular and humoral immunity

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in American Journal of Veterinary Research

contain only g1-TTV DNAs were used as positive control samples. At the other 2 laboratories, negative control samples consisted of multiple samples of water and sera obtained from Cesarean-derived, colostrum-deprived swine that were known to have negative

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in American Journal of Veterinary Research