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udder health management, bovine mastitis and milk quality

Cecilia Wolff, Mark Stevenson, Ulf Emanuelson, Agneta Egenvall, Ann Lindberg
Clinical mastitis (CM) is the most common veterinary treated disease in Swedish dairy cattle. To investigate if the distribution of veterinary registered cases of CM in Sweden follows that of the spatial distribution of cows with high somatic cell counts (SCCs), the spatial distribution of CM odds was estimated from available records and compared with udder health measures based on measurements of SCC derived from official milk recording. The study revealed areas with significantly lower odds for CM but with a high proportion of cows with a poor udder health score, suggesting an under-reporting of CM...
November 2011: Geospatial Health
D Schwarz, U S Diesterbeck, K Failing, S König, K Brügemann, M Zschöck, W Wolter, C-P Czerny
Somatic cell counts (SCC) are generally used as an indicator of udder health. Currently in Germany, 100,000 cells/mL is the threshold differentiating infected and noninfected mammary glands. The aim of our study was the detailed analysis of udder health in a representative part of the dairy cow population in Hesse, Germany. Between 2000 and 2008, 615,187 quarter foremilk samples were analyzed. In addition to evaluation of distribution of SCC and prevalence of mastitis pathogens, pathogen prevalence was also calculated depending on SCC...
December 2010: Journal of Dairy Science
C B Tucker, S J Lacy-Hulbert, J R Webster
The effects of 2 common dry-off management procedures, feed restriction [8 vs. 16 kg of dry matter (DM)/d] and reduced milking frequency (once, 1x vs. twice, 2x/d), on the behavior and udder characteristics of dairy cattle were assessed in late lactation and the early dry period. Milking cows 1x instead of 2x in the week before dry off reduced milk yield (7.0 vs. 8.9 +/- 0.95 kg/d for 1x and 2x, respectively), but had little effect on behavior before or after cessation of milking. In comparison, feed restriction reduced milk yield (6...
July 2009: Journal of Dairy Science
M Kirchhofer, L v Tavel, D Strabel, C Fournier, A Steiner, H U Graber, T Kaufmann
Data from 59 farms with complaints of udder health problems and insufficient quality of delivered milk that had been assessed by the Swiss Bovine Health Service (BHS) between 1999 and 2004 were retrospectively analysed. Data evaluated included farm characteristics such as farm size, herd size, average milk yield, milking system and housing system, deficits of the milking equipment and the milking practices, and bacteriological results of milk samples from all cows in lactation. The average size of the farms assessed by the BHS was larger than the size of the were evaluated, 42 showed obvious failures which the farm managers could have noticed...
September 2007: DTW. Deutsche Tierärztliche Wochenschrift
G Köster, B-A Tenhagen, W Heuwieser
The aim of this study was to examine influences of housing conditions on the udder health in 80 German dairy herds with a herd size between 100 and 1100 cows. Data were collected using a standardized questionnaire for the farm manager and a farm visit using a standardized data capture form on hygiene and management. The somatic cell counts of all lactating cows on each farm were collected monthly by the local dairy herd improvement association and analysed to assess udder health status. Factor analysis was used to analyse the variables describing the environmental hygiene...
April 2006: Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine
B M Jayarao, S R Pillai, A A Sawant, D R Wolfgang, N V Hegde
This study was conducted to establish guidelines for monitoring bulk tank milk somatic cell count and bacterial counts, and to understand the relationship between different bacterial groups that occur in bulk tank milk. One hundred twenty-six dairy farms in 14 counties of Pennsylvania participated, each providing one bulk tank milk sample every 15 d for 2 mo. The 4 bulk tank milk samples from each farm were examined for bulk tank somatic cell count and bacterial counts including standard plate count, preliminary incubation count, laboratory pasteurization count, coagulase-negative staphylococcal count, environmental streptococcal count, coliform count, and gram-negative noncoliform count...
October 2004: Journal of Dairy Science
Ynte H Schukken, David J Wilson, Francis Welcome, Linda Garrison-Tikofsky, Ruben N Gonzalez
In this article the use of somatic cell counts for monitoring udder health and milk quality is discussed. Somatic cell count dynamics at quarter, cow, herd and population level are discussed and illustrated with examples. Quarter and cow somatic cell counts directly represent the inflammatory status of the mammary gland. Herd and population somatic cell count are related to the inflammatory process in individual cows but much more reflect the udder health status of the herd and the quality of the raw milk in the herd and the population...
September 2003: Veterinary Research
Bhushan M Jayarao, David R Wolfgang
Bulk-tank milk (BTM) analysis is now widely accepted as a useful tool for evaluating milk quality and monitoring udder-health status in a herd. Bacterial and somatic cell count (SCC) estimation of BTM, when done repeatedly over a period of time, can become a significant knowledge base. When interpreted within the context of the farm's management practices, this information provides a basis for evaluating current and potential milk quality and mastitis problems in a herd. This article describes the process of using BTM analysis to make decisions on improving milk quality and herd udder health...
March 2003: Veterinary Clinics of North America. Food Animal Practice
M A Faust, M L Kinsel, M A Kirkpatrick
Our objectives were to investigate strategies for biosecurity, expansion, and culling for expanding dairy herds in the Upper Midwest. Eighteen dairies in Iowa and Wisconsin were visited, and dairy managers and veterinarians were interviewed to characterize five biosecurity practices, herd culling practices, vaccines administered, and ensuing disease status for the herds. The majority of herds that were interviewed failed to employ comprehensive biosecurity programs for incoming cattle. Nearly 60% of herds obtained cattle from sources for which it was difficult to document genetic backgrounds and health histories, fewer than half required health testing for incoming cattle, and approximately 50% quarantined new cattle on arrival...
April 2001: Journal of Dairy Science
W Obritzhauser
Udder health was investigated in five small and middle sized dairy herds. Indices for the evaluation of udder health were calculated and listed with normal range indices. The importance of somatic cell count of bulk-milk, individual cow somatic cell counts and calculated mean somatic cell counts of the herds for the control of udder health are discussed. In addition with microbiological findings from mastitis milk these data give a good idea of mastitis-situation. Collecting and analysing data with a herd health computer program are valuable tools in managing udder health in this small dairy herds...
June 1995: DTW. Deutsche Tierärztliche Wochenschrift
J J Goldberg, E E Wildman, J W Pankey, J R Kunkel, D B Howard, B M Murphy
Monthly bulk tank milk samples and veterinary records were analyzed for 1 yr on 15 Vermont dairy farms. Data were evaluated using ANOVA to compare effects of grazing management systems on milk quality and udder health. Systems evaluated were intensively managed rotational grazing, traditional continuous grazing, and confinement housing. Bulk tank samples were evaluated for standard plate count, bacterial type counts on tryptose-blood-esculin agar, and SCC. Veterinary records were evaluated for incidence of clinical mastitis, udder edema, and teat injuries...
January 1992: Journal of Dairy Science
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