Efficacy of an Escherichia coli J5 Bacterin Administered to Primigravid Heifers
نویسندگان
چکیده
منابع مشابه
Bovine Leukemia Virus Infection in Dairy Cattle: Effect on Serological Response to Immunization against J5 Escherichia coli Bacterin
Thirteen bovine leukemia virus- (BLV-) negative and 22 BLV-positive Holstein cows were immunized with J5 Escherichia coli bacterin at dry off, three weeks before calving, during the second week after calving, and three weeks after the third immunization. Serum was collected before the initial immunization, immediately before the third and fourth immunizations, and 21 days after the fourth immun...
متن کاملCarumonam enhances reactivity of Escherichia coli with mono- and polyclonal antisera to rough Escherichia coli J5.
Escherichia coli O111 reacts only slightly with antiserum to its rough mutant E. coli J5 in an enzyme-linked immunosorbent assay. When E. coli O111 was grown in the presence of sub-MICs of the monocyclic beta-lactam antibiotic carumonam, however, the enzyme-linked immunosorbent assay titer increased from 1,280 to 81,920. When the bacteria were grown in the presence of carumonam, the titer that ...
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Plasvacc Australia (Plasvacc) 6066 Cunningham Hwy Kalbar Queensland Australia 4309 61-7-54637600 Objectives – To develop an effective Escherichia coli (E. coli) vaccine that engenders a strong and measurable humoral response in canine plasma donors. To develop an assay to determine potency of plasma derived from vaccinated canine donors. To determine efficacy of hyperimmune plasma to E. coli in...
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To study the mechanisms of protection against endotoxin challenge offered by antisera to smooth and rough gram-negative organisms, we have developed an assay to quantitate endotoxin neutralization based on inhibition of the Limulus amoebocyte lysate test. Dilutions of different bacterial lipopolysaccharides (LPSs) were incubated with hyperimmune rabbit sera against Escherichia coli O113, E. col...
متن کاملThe efficacy of an Escherichia coli-derived phytase preparation.
Five experiments were conducted to evaluate the effect of an Escherichia coli-derived phytase on phytate-P use and growth performance by young pigs. The first experiment involved time course, pH dependence, and phytase activity studies to investigate the in vitro release of P from corn, soybean meal, and an inorganic P-unsupplemented corn-soybean meal negative control diet. In Exp. 2, which was...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1999
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(99)75312-9