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Biomedical subjects

B C Anderson

Publications and source records attributed to B C Anderson.

At least 55 records · Page 3Linked to original sources
PubMed1985

Firm udder in periparturient ewes with lymphocytic accumulations, retrovirus infection, and milk unavailable at the teat.

A condition of firm udders in periparturient ewes, with little or no milk available at the teat, was associated with negative bacterial cultures of mammary tissue, isolation of ovine progressive pneumonia virus from mammary tissue, lymphocytic accumulations in mammary tissue, especially around ducts, and antibody to ovine progressive pneumonia virus in sera. Milk was present in the glands, but was not adequately transported through the duct system. The cull rate of ewes with this condition was reported by producers and veterinarians to be less than 5% in flocks where the condition was recognized, but approximately 10% of ewes were apparently affected in at least 1 flock.

Animals↗
PubMed1985

Moist heat inactivation of Cryptosporidium sp.

Cryptosporidia that were infective for infant mice were subjected to various moist heat treatments and subsequently tested in infant mice for infectivity. Warming from 9 degrees C to 55 degrees C over a period of 15 to 20 minutes neutralized infectivity in calf feces, cecal contents, and ileal scrapings. Inocula held at 45 degrees C for 5 to 20 minutes lost its infectivity. These results suggest that pasteurization of raw milk, circumstantially incriminated in cryptosporidial transmission, would neutralize cryptosporidial infectivity.

Animals↗
PubMed1984

Serum gamma glutamyl transpeptidase activity in cattle with induced fascioliasis.

Six-month-old calves were inoculated with 200 metacercariae of Fasciola hepatica over a 72 day period. Their aspartic transaminase, alkaline phosphatase, arginase and gamma glutamyl transpeptidase (GGT) values were measured at two-week intervals. Infections with a final fluke count of 19 to 87 flukes did not result in an increase of serum alkaline phosphatase or arginase compared with those in control calves. Serum aspartic transaminase values were increased significantly (P less than 0.025) above those of controls but were not increased over reference values. Seemingly, measurement of these enzymes would not be useful in assessing the degree of fluke infestation. In contrast, serum values of GGT increased 56 days after preliminary inoculation and remained high for at least 83 days after infection. The initial rise coincided with the penetration of bile ducts by migrating flukes. This relationship may be useful in further studies of fluke-induced biliary damage.

Alkaline Phosphatase↗
PubMed1983

Association of sexual experience with isolation of various bacteria in cases of ovine epididymitis.

Testicles from rams in flocks experiencing ram epididymitis in Idaho and eastern Oregon were cultured. Twenty-six breeding rams from 6 flocks were cultured and only Brucella ovis was isolated. Virgin rams (65) harbored numerous species of small fastidious gram-negative rods, including Actinobacillus actinomycetemcomitans, Haemophilus spp, Moraxella spp, and Pasteurella spp. Thus, there appeared to be 2 separate disease entities, dependent on sexual experience of the animal.

Animals↗
PubMed1982

Cryptosporidiosis in Idaho lambs: natural and experimental infections.

Cryptosporidiosis was diagnosed in lambs of a farm flock and an orphan-lamb rearing operation and in a hospitalized lamb. The clinical course was brief, with mild diarrhea and oocyst shedding during the diarrheic episode. Feces from the hospitalized lamb were used to reproduce the disease. Diarrhea and oocyst shedding occurred in inoculated lambs and their contact twin siblings but not in uninoculated noncontact control lambs or in inoculated ewes.

Animals↗
PubMed1982

Infectious agents associated with neonatal calf disease in southwestern Idaho and eastern Oregon.

Over a 2-year period, 296 episodes of disease involving 226 1-to-60-day-old calves were referred to the Caldwell Veterinary Teaching Center. Infectious disease agents were found in 96% of the cases. Salmonella spp were the most frequently isolated agents from dairy calves, whereas coronavirus was the agent most commonly associated with diarrhea in beef calves. Multiple agents were found in 20% of the dairy calves and in 12% of the beef calves. Salmonella dublin, which is associated with severe disease in man, made up a large percentage of the Salmonella spp isolated (40%). In vitro drug sensitivities indicated that a high percentage of Salmonella and Escherichia coli were resistant to drugs, especially to the drugs commonly used to treat calf diarrhea.

Animals↗
PubMed1981

Patterns of shedding of cryptosporidial oocysts in Idaho calves.

Fecal flotation was found to be a practical procedure for detecting cryptosporidial infection in diarrheic calves. Fifteen naturally infected diarrheic Holstein-Friesian calves passed Cryptosporidium oocysts, beginning 5 to 12 days after birth and continuing for 3 to 12 days.

Animals↗
PubMed1981

Salmonellosis in goats.

Three episodes of salmonellosis in goats were similar to the disease described in neonatal calves, 2- to 4-week-old calves, and adult cattle. However, bloody diarrhea so often associated with salmonellosis in other animals was not seen in any of the goats. Mortality was high despite fluid therapy and the use of antibiotics shown to be effective in vitro. The importance of specific etiologic diagnosis was emphasized, inasmuch as salmonellosis of goats can be confused with other, more common diseases and, though other measures can be used to treat or control these similar diseases, strict sanitation and management changes were the only means found to be effective in the control of caprine salmonellosis.

Animals↗