Results

[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
A stratified-random sample of 48 Ohio dairy herds participated in a 1-year disease monitoring survey to study herd management and environmental conditions affecting udder infection and clinical mastitis incidence. The mean monthly bulk-tank somatic cell count was used as an indicator of overall udde...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
Sawdust bedding in pens housing 6 cows was treated twice at an interval of 7 days with orthophenylphenol (1 gal/600 ft2 of a 1:128 dilution on day 1 and 3 gal/600 ft2 of a 1:3 dilution on day 8), slaked lime (8 lb/100 ft2), or paraformaldehyde (14.5 g/yd2 as a 5% suspension). Bedding samples were ex...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
The effect of 2 prophylactic treatments with albendazole (7.5 mg/kg) was evaluated in Ohio, USA, in 2 groups of Holstein dairy replacement heifers treated 3 and 6 weeks after turnout to spring pasture on May 2, 1983. The lightweight group consisted of twelve 7- to 9-month-old heifers with a mean ini...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
Problems associated with the lack of acceptance, and the apparent lack of effectiveness in a few herds, of mastitis control programmes are discussed. Emphasis is placed on the need for visual assessment of mastitis control (such as CMT score) which will demonstrate results to the dairyman. More advi...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
Cows with three hundred and sixteen cases of clinical mastitis were sampled by microbiologic culture during a 6-mo period on a 1700-cow Michigan Holstein dairy farm. Daily milk weights were obtained on all cows before clinical onset and for 60 d after onset. Predicted postmastitis production, projec...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
Cows with three hundred and sixteen cases of clinical mastitis were sampled by microbiologic culture during a 6-mo period on a 1700-cow Michigan Holstein dairy farm. Daily milk weights were obtained on all cows before clinical onset and for 60 d after onset. Predicted post-mastitis production, proje...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
The reporting of herd summaries of individual cow somatic cell counts (SCC) differs between the 9 Dairy Records Processing Centers. Estimates of central tendency and frequency distributions are the most commonly used herd summary statistics for SCC. Analyses of the frequency distributions are less w...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
A stratified random sample of Ohio dairy herds was studied to relate herd management and environmental conditions to the prevalence of intramammary infection with coagulase-negative staphylococci. Management and environmental conditions were assessed by investigator observation and by interview with...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
A series of least-squares analytical models were developed in a cross-sectional epidemiological study of the variability in within-herd high somatic cell count (SCC) prevalence, a measure of mastitis prevalence in dairy herds. The dependent variable, high SCC prevalence, was calculated as the 12-mon...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
Forty-eight dairy herds in Ohio were selected as a stratified random sample for participation in a disease monitoring study to relate the prevalence of IMI with coliform and environmental streptococci to herd management and environmental conditions. Management and environmental conditions were asses...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
Bacterial counts were monitored for 1 yr in bedding materials used on nine commercial dairies. Organic materials used to bed lactating cows had significantly higher moisture content and gram-negative bacterial, coliform, Klebsiella species, and streptococcal counts than did inorganic materials. Kleb...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
Dairy herds in Ohio were selected by stratified random sampling for participation in a disease-monitoring study to relate Streptococcus agalactiae intramammary prevalence to herd management and environmental conditions. Of 48 herds studied, 27 herds had at least 1 cow infected with this pathogen. Ma...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
A cross-sectional study of 1,032 dairy herds in Ohio was conducted to determine the prevalence of the major contagious pathogens of mastitis (Streptococcus agalactiae and Staphylococcus aureus) and the use of common mastitis control measures. Herd owners were surveyed by mail concerning their use of...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
4 problems can occur in a dairy herd which may cause the herd to be identified as a problem mastitis herd. These are (i) antibiotic residues present in bulk tank milk, (ii) high bacterial count, (iii) high leucocyte count, and (iv) increased number of serious clinical cases with deaths. Milk samples...
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
[Page generation failure. The bibliography processor requires a browser with Javascript enabled.]
Three projects recently funded by the American Veterinary Medical Association (AVMA) through the National Commission on Veterinary Economic Issues (NCVEI) focused on the veterinary school applicant pool, leadership skills in the veterinary profession, and a veterinary teaching hospital business mode...