Protection against bovine rotaviruses in newborn calves by continuous feeding of immune colostrum.
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چکیده
منابع مشابه
Protection of calves against cryptosporidiosis with immune bovine colostrum induced by a Cryptosporidium parvum recombinant protein.
The purpose of the study was to determine if immunization with a recombinant protein (rC7) of Cryptosporidium parvum would induce immune bovine colostrum that protected calves against cryptosporidiosis following oral challenge with C. parvum oocysts. Late gestation Holstein cows with low titers of antibody to the p23 antigen of C. parvum were immunized three times with 300 microg affinity purif...
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A method was further developed to screen non-tissue-culture-adapted bovine rotaviruses for serotype, using a neutralization test with infectious fecal rotavirus. One of those rotaviruses (B223) which was not blocked by antiserum to the neonatal calf diarrhea virus (NCDV) serotype was then adapted to cell culture in the presence of the antiserum for two or more passages and hyperimmune antiserum...
متن کاملProteinuria in New-born Calves following the Feeding of Colostrum
The evidence presented indicates clearly that the feeding of colostrum is responsible for the proteinuria. Observations on many calves killed within the 3 first days have shown that this condition is nearly universal and that it disappears after the 3rd day, even when the calf is not quite normal. Urine of fetuses and unfed calves did not contain it. By feeding different amounts of colostrum, b...
متن کاملMilk supplemented with immune colostrum: protection against rotavirus diarrhea and modulatory effect on the systemic and mucosal antibody responses in calves experimentally challenged with bovine rotavirus.
Group A bovine rotavirus (BRV) is the major cause of neonatal calf diarrhea worldwide. As a preventive strategy, we evaluated the protection and immunomodulation in two groups of BRV-inoculated calves. All calves received control colostrum (CC; VN=65,536; IgG(1)=16,384) prior to gut closure followed by the milk supplemented with immune colostrum (VN=1,048,576; IgG(1)=262,144), twice a day, for ...
متن کاملColostrum Replacer and Bovine Leukemia Virus Seropositivity in Calves
1. Swanepoel R, Coetzer JAW. Rift Valley fever. In: Coetzer JAW, Thomson GR, Tustin RC, editors. Infectious diseases of livestock. Oxford (UK): Oxford University Press; 2004. p. 1037–70. 2. Olive MM, Goodman SM, Reynes JM. The role of the wild mammals in the maintenance of Rift Valley fever virus. J Wildl Dis. 2012;48:241–66. 3. Fontenille D. Arbovirus transmission cycles in Madagascar [in Fren...
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ژورنال
عنوان ژورنال: The Japanese Journal of Veterinary Science
سال: 1989
ISSN: 0021-5295,1881-1442
DOI: 10.1292/jvms1939.51.300