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VetMed Resource

Veterinary information to support practice, based on evidence and continuing education

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Abstract

The kinetic development of serum antibodies to purified proteins of Hypoderma lineatum was monitored in vaccinated and non-vaccinated cattle infested with the oestrid. The efficacy of these purified proteins as a candidate vaccine was also evaluated. The vaccination of previously uninfested cattle...

Author(s)
Pruett, J. H.; Barrett, C. C.; Fisher, W. F.
Citation
Southwestern Entomologist, 1987, 12, 2, pp 79-88
Abstract

Cattle infested with H. lineatum develop specific humoral antibodies and a cellular immune reaction, defined by delayed-type hypersensitivity, to purified H. lineatum proteins. This investigation was designed to study the antigen-specific bovine lymphocytes response to hypodermin A (HyA), a serine...

Author(s)
Fisher, W. F.; Pruett, J. H.; Howard, V. M.; Scholl, P. J.
Citation
Veterinary Parasitology, 1991, 40, 1-2, pp 135-145
Abstract

The serum antibody activity to Psoroptes ovis antigens, as determined by enzyme-linked immunosorbent assay (ELISA), was monitored during the development and decline phase of infestation in cattle herds under feedlot conditions in an endemic (Bushland) and a non-endemic (Kerrville) area of Texas....

Author(s)
Fisher, W. F.; Guillot, F. S.; Cole, N. A.
Citation
Experimental & Applied Acarology, 1986, 2, 3, pp 239-248
Abstract

In a study conducted in Texas, Hereford heifers were stanchioned and infested with Psoroptes ovis. The development of antibody activity against the mite was measured by enzyme-linked immunosorbent assay, and cellular immune function was monitored with selected mitogens and psoroptid antigens. A...

Author(s)
Pruett, J. H.; Guillot, F. S.; Fisher, W. F.
Citation
Veterinary Parasitology, 1986, 22, 1/2, pp 121-133
Abstract

A strain of Psoroptes ovis that was originally obtained from cattle was reared in the ears of domestic rabbits in the laboratory in the USA for 2.8 years. The mites thrived on the rabbits and exhibited no morphological change as measured by l4 setal lengths, or body length or width of adult males...

Author(s)
Wright, F. C.; Fisher, W. F.
Citation
International Journal of Acarology, 1984, 10, 3, pp 139-143
Abstract

Calves infested with P. ovis for the first time (naive) or previously infested calves were examined for serum antibody activity to P. ovis (obtained from rabbits) antigens by enzyme-linked immunosorbent assay (ELISA). Development of serum antibody activity to P. ovis antigens was then correlated...

Author(s)
Fisher, W. F.
Citation
Veterinary Parasitology, 1983, 13, 4, pp 363-373
Abstract

Serum from six calves infected with P. ovis were examined for 17 selected biochemical constituents. Total protein, alpha-, beta-, and gamma-globulin were increased and total cholesterol was decreased at the peak of the scabies infestation. Precipitating antibodies to a P. ovis antigen were detected ...

Author(s)
Fisher, W. F.; Crookshank, H. R.
Citation
Veterinary Parasitology, 1982, 11, 2, 3, pp 241-251
Abstract

During the winter of 1976-77, 71 predominantly Hereford beef calves were exposed to psoroptic scabies by contact and by mechanical transfer. Two calves died and the other 69 were divided into 3 groups based upon their susceptibility to scabies as judged by monthly examinations and weighings. Five...

Author(s)
Meleney, W. P.; Fisher, W. F.
Citation
Proceedings of the United States Animal Health Association, 1979, 83, pp 340-346
Abstract

To determine if a seasonal variation occurs in the incidence of Demodex-infested nodules in cattle, pickled steerhides were examined by means of transmitted light at a large Midwestern abattoir in the United States. An average of 124.7 nodules was found on 23 hides selected during this study....

Author(s)
Fisher, W. F.
Citation
Journal of the American Leather Chemists' Association, 1974, 69, 1, pp 5-10
Abstract

Studies were conducted in Texas during the winters of 1978-79 and 1979-80 to determine if Psoroptes ovis (Her.) affects cumulative weight gains (CWG) of young Hereford steer calves. In the first test, no significant difference was found in the mean CWG between the control and infested calves, but...

Author(s)
Fisher, W. F.; Wright, F. C.
Citation
Journal of Economic Entomology, 74, 2, pp 234-237

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