EurekaMag.com logo
+ Site Statistics
References:
48,253,228
Abstracts:
22,798,842
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Herd management and prevalence of mastitis in dairy herds with high and low somatic cell counts


, : Herd management and prevalence of mastitis in dairy herds with high and low somatic cell counts. Journal of the American Veterinary Medical Association 190(11): 1411-1416

Thirty-two dairy herds, 16 with low somatic cell counts (LSCC; Dairy Herd Improvement Association 12-month mean herd SCC less than or equal to 150,000 cells/ml) and 16 with high somatic cell counts (HSCC; Dairy Herd Improvement Association 12-month mean herd SCC greater than or equal to 700,000 cells/ml) were evaluated to determine the relationship between the prevalence of mastitis in each herd and each herd's mastitis control and management practices. Once for each herd, duplicate quarter milk samples were collected from the lactating cows, a survey of herd mastitis control, milking hygiene, and management practices of each herd was performed, and milking-machine function was evaluated. Of the 16 herds with LSCC, 2 (12.5%) had Streptococcus agalactiae isolated and 7 (44%) had Staphylococcus aureus isolated. Both organisms were found in all of the herds with HSCC. In herds with LSCC, the mean percentage of quarters infected with Str agalactiae was 0.1%, the mean percentage infected with streptococci other than Str agalactiae was 1.9%, and the mean infected with S aureus was 0.7%. In herds with HSCC, 25.7% of the quarters were infected with Str agalactiae, 3.7% were infected with streptococci other than Str agalactiae, and 7.6% were infected with S aureus. A program of postmilking teat dipping and treatment of all cows at the beginning of the nonlactating period was practiced more frequently in the herds with LSCC (81.3%) than in the herds with HSCC (37.5%). Major differences were not found between the 2 groups of herds in the use of the more common milking hygiene techniques or in the maintenance and functional characteristics of the milking equipment.

(PDF 0-2 workdays service)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 001607728

PMID: 3301762

PDF Full Text: Submit


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Mihăilescu, E.; Micu, D., 1985: Eosinophilia in the pleural and peritoneal effusions. Of 248 patients with various benign or malignant chronic diseases who presented pleural or peritoneal effusions, the authors have selected 16 cases in which the proportion of eosinophils in these fluids exceeded 5% of the total cell count. High va...

Wibo M.; Amar Costesec A.; Berthet J.; Beaufay H., 1971: Electron microscopy examination of sub cellular fractions part 3 quantitative analysis of the microsomal fraction isolated from rat liver. Journal of Cell Biology 51(1): 52-71

Evans, H.M.; Simpson, M.E.; Austin, P.R., 1933: The Recognition And Comparison Of Prolan And Prolan-Like Substances. The synergism phenomenon has made possible the recognition of substances, which we have called "prolan-like," in a wide variety of conditions. Indeed, it has been possible to demonstrate a prolan-like material in the urine of normal men....

Tashiro, H.; Beavers, J.B.; Groza, M.; Moffitt, C., 1970: Persistence of a nonoccluded virus of the citrus red mite on lemons and in intact dead mites. The following is virtually the authors' summary. In tests in California, adult females of Panonychus citri (McG.) infected with a nonoccluded virus and feeding on the surface of green lemons deposited virus that was infective for 28 days to o...

Suchard, M.A.; Weiss, R.E.; Dorman, K.S.; Sinsheimer, J.S., 2002: Oh brother, where art thou? A Bayes factor test for recombination with uncertain heritage. Current methods to identify recombination between subtypes of human immunodeficiency virus 1 (HIV-1) fall into a sequential testing trap, in which significance is assessed conditional on parental representative sequences and crossover points (COPs...

Konnert, M.; Hussendorfer, E.; Muller Starck, G., 2003: Chances and risks for adaptability to climatic changes. Genetic variation and differentiation in silver fir and larch. Population genetic studies are presented of 2 silver fir [Abies alba] forests and an Alpine larch Larix forest in southern Germany.

Upendra, Y.; Mahajan, V.K.; Mehta, K.S.; Chauhan, P.S.; Chander, B., 2013: Cutaneous larva migrans. The case of a 17-year-old girl who presented with cutaneous larva migrans, 15 days after walking barefoot along a beach in Mombasa, Kenya, is described. A general account of cutaneous larva migrans is given, and approaches to treatment are outline...

Bal'yan V.V.; Gizhlaryan M.S., 1982: Effect of chloroprene dimers on reproductive function of rats. The embryotoxic and gonadotoxic effects of chloroprene dimers were studied. Chloroprene dimers in inhalative injection to females during the whole period of pregnancy at 6.5 .+-. 0.37 mg/m3 caused disorders in embryonal development and increased t...

Peng, F.; Liang, K-Ming.; Shao, H.; Hu, A-Min., 2005: Nano-crystal glass-ceramics obtained by crystallization of vitrified red mud. Glass has been obtained by melting red mud from Shandong Province in China with different additives. Suitable thermal treatments were employed to convert the obtained glass into nano-crystal glass-ceramics. X-ray diffraction (XRD) patterns showed...

Vudhichativanich Supatra; Sitthithaworn Ekawat, 1992: Au-Cu mineralization at Phu Lon, northeastern Thailand. International Geological Congress, Abstracts Congres Geologique Internationale, Resumes: ages 735. 1992.