The Influence of Feeding and Housing Systems on Production, Reproduction, and Somatic Cell Count Scores of Southern Holstein Herds11Contribution to NC-119 regional research project “Dairy Herd Management Strategies for Improved Decision Making and Profitability.”

1997 ◽  
Vol 13 (3) ◽  
pp. 155-161 ◽  
Author(s):  
J.W. Smith ◽  
L.O. Ely ◽  
R. Adams ◽  
D. Howes
Keyword(s):  
Decision Making ◽  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Management Strategies ◽  
Dairy Herd ◽  
Regional Research ◽  
Research Project ◽  
Herd Management ◽  
Housing Systems

scholarly journals Differential somatic cell count—A novel method for routine mastitis screening in the frame of Dairy Herd Improvement testing programs

2017 ◽  
Vol 100 (6) ◽  
pp. 4926-4940 ◽  
Author(s):  
Malin Damm ◽  
Claus Holm ◽  
Mette Blaabjerg ◽  
Morten Novak Bro ◽  
Daniel Schwarz
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Dairy Herd ◽  
Novel Method

Reliability of the bulk milk somatic cell count as an indication of average herd somatic cell count

2009 ◽  
Vol 76 (4) ◽  
pp. 490-496 ◽  
Author(s):  
Jan Lievaart ◽  
Herman W Barkema ◽  
Henk Hogeveen ◽  
Wim Kremer
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Management Practices ◽  
Dairy Herd ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Bulk Milk ◽  
Sampling Variation ◽  
The Difference

Bulk milk somatic cell count (BMSCC) is a frequently used parameter to estimate the subclinical mastitis prevalence in a dairy herd, but it often differs considerably from the average SCC of all individual cows in milk. In this study, first the sampling variation was determined on 53 dairy farms with a BMSCC ranging from 56 000 to 441 000 cells/ml by collecting five samples on each farm of the same bulk tank. The average absolute sampling variation ranged from 1800 to 19 800 cells/ml. To what extent BMSCC represents all lactating cows was evaluated in another 246 farms by comparing BMSCC to the average herd SCC corrected for milk yield (CHSCC), after the difference was corrected for the sampling variation of BMSCC. On average BMSCC was 49 000 cells/ml lower than CHSCC, ranging from −10 000 cells/ml to 182 000 cells/ml, while the difference increased with an increasing BMSCC. Subsequently, management practices associated with existing differences were identified. Farms with a small (<20%) difference between BMSCC and CHSCC administered intramuscular antibiotics for the treatment of clinical mastitis more often, used the high SCC history when cows were dried off more frequently and had a higher number of treatments per clinical mastitis case compared with farms with a large (⩾20%) difference. Farms feeding high-SCC milk or milk with antibiotic residues to calves were 2·4-times more likely to have a large difference. Although sampling variation influences the differences between BMSCC and CHSCC, the remaining difference is still important and should be considered when BMSCC is used to review the average herd SCC and the subclinical mastitis prevalence.

scholarly journals Herd and State Means for Somatic Cell Count from Dairy Herd Improvement

2000 ◽  
Vol 83 (12) ◽  
pp. 2782-2788 ◽  
Author(s):  
H.D. Norman ◽  
R.H. Miller ◽  
J.R. Wright ◽  
G.R. Wiggans
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Dairy Herd

scholarly journals Effect of cow cleanliness in different housing systems on somatic cell count in milk

2016 ◽  
Vol 85 (1) ◽  
pp. 55-61
Author(s):  
Wojciech Neja ◽  
Mariusz Bogucki ◽  
Małgorzata Jankowska ◽  
Anna Sawa
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Housing Systems

scholarly journals BULK TANK SOMATIC CELL COUNT IN MILK SAMPLES FROM STATE OF PARANÁ

2014 ◽  
Vol 19 (1) ◽  
Author(s):  
Newton Pohl Ribas ◽  
Paulo Rossi Junior ◽  
Humberto Gonzalo Monardes ◽  
Uriel Vinicius Cotarelli Andrade ◽  
Altair Antonio Valotto ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Fixed Effects ◽  
Somatic Cell Count ◽  
Dairy Herd ◽  
The State ◽  
Scientific Cooperation ◽  
Bulk Tank Milk ◽  
Milk Samples ◽  
Bulk Tank

This research studied somatic cell count in bulk tank milk samples (BTSCC) from the state of Paraná, Brazil, at the Milk Quality Laboratory of the Dairy Herd Analysis Service of the Holstein Association of Paraná, the result of technical and scientific cooperation between UFPR and McGill University of Canada. A total of 1,950,034 bulk tank milk samples from ten regions of the state of Paraná were analyzed between January 2005 and April 2012 and were studied using PROC GLM (SAS, version 9.3). Fixed effects were the month and year of analysis, region and age of the sample. Means and standard deviations of BTSCC were 553,519 ± 545,532 cells/ml, respectively. All fixed effects were statistically significant (P<0.01). Highest values for BTSCC are observed in the month of February (554,000 cells/ml ± 1.45) and lowest values in September (450,000 cells/ml ± 1.47). Similarly, the highest values were found in the year 2010 (567,000 cells/ml ± 1.16), the lowest BTSCC was found in 2012 (444,000 cells/ml ± 1.57). The region effect was also significant with the highest values found in the South Center/ Guarapuava (668,000 cells/ml ± 0.87) and the lowest in the Southwest/ Francisco Beltrão (359,000 cells/ml ± 2.00). Both variables showed a reduction of their values with increasing age of the sample, from 518,000 ± 1.08 to 472,000 cells/ml ± 2.14 between the first and the seventh day, for the BTSCC. Coefficient of variation for BTSCC was 96.10%. The R² was 0.39 for BTSCC.

scholarly journals Herd management and social variables associated with bulk tank somatic cell count in dairy herds in the eastern United States

2015 ◽  
Vol 98 (11) ◽  
pp. 7650-7665 ◽  
Author(s):  
R.L. Schewe ◽  
J. Kayitsinga ◽  
G.A. Contreras ◽  
C. Odom ◽  
W.A. Coats ◽  
...  
Keyword(s):  
United States ◽  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Dairy Herds ◽  
Eastern United States ◽  
Social Variables ◽  
Herd Management ◽  
Bulk Tank

scholarly journals Herd Management Practices and Their Association with Bulk Tank Somatic Cell Count on United States Dairy Operations

2007 ◽  
Vol 90 (8) ◽  
pp. 3652-3659 ◽  
Author(s):  
J.R. Wenz ◽  
S.M. Jensen ◽  
J.E. Lombard ◽  
B.A. Wagner ◽  
R.P. Dinsmore
Keyword(s):  
United States ◽  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Management Practices ◽  
Herd Management ◽  
Bulk Tank

scholarly journals Effect of cow cleanliness in different housing systems on somatic cell count in milk

2016 ◽  
Vol 85 (1) ◽  
pp. 55-61
Author(s):  
Wojciech Neja ◽  
Mariusz Bogucki ◽  
Małgorzata Jankowska ◽  
Anna Sawa
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Clinical Mastitis ◽  
The Body ◽  
Housing System ◽  
Body Parts ◽  
Housing Systems ◽  
Quality Of Milk

The aim of the study was to analyse the effect of the housing system (tie-stall vs free-stall) on cow cleanliness, and the effect of the degree of cow dirtiness on the milk somatic cell count. Over 33% of the cows were found to be clean, with more of them in the free-stall barn. Analysis of the cleanliness of body parts showed that the highest hygiene level was characteristic of the udders and underbelly (scores of 1 for 47% and 56% of the cows, respectively). In the free-stall barn, there were over twice as many cows with clean udders (58%) and almost twice as few cows with very dirty udders. Regardless of the housing system, the degree of udder dirtiness created differences (P ≤ 0.01) in the natural log somatic cell count. The natural log somatic cell count increased from 11.54 to 12.37 on average with increased dirtiness of the udder. Greater differences in the cytological quality of milk were found in cows housed in the free-stall system. When analysing the effect of overall dirtiness of the cows and the body parts on the percentage of SCC classes, it was found that highest quality milk (< 200 000 somatic cells/ml) was produced by clean cows (71.52%). The proportion of cows with subclinical and clinical mastitis was found to increase with decreasing cleanliness of the udder, especially in the free-stall system. Overall, the proportion of cows with clinical mastitis increased from 2.51% (clean cows) to 14.29% (dirty cows).

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