scholarly journals Month-wise variation and prediction of bulk tank somatic cell count in Brazilian dairy herds and its impact on payment based on milk quality

2017 ◽  
Vol 70 (1) ◽  
Author(s):  
Marcos Busanello ◽  
Larissa Nazareth de Freitas ◽  
João Pedro Pereira Winckler ◽  
Hiron Pereira Farias ◽  
Carlos Tadeu dos Santos Dias ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Milk Quality ◽  
Dairy Herds ◽  
Bulk Tank

scholarly journals Description of the Characteristics of Five Bedding Materials and Association With Bulk Tank Milk Quality on Five New York Dairy Herds

2021 ◽  
Vol 8 ◽  
Author(s):  
Valeria M. Alanis ◽  
Michael Zurakowski ◽  
Deb Pawloski ◽  
Tiago Tomazi ◽  
Daryl V. Nydam ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Milk Quality ◽  
Dairy Herds ◽  
Bulk Tank Milk ◽  
Bacterial Counts ◽  
Cell Counts ◽  
Bulk Tank ◽  
Bacterial Groups

Environmental mastitis represents a major challenge on dairy farms where contagious pathogens are controlled by improved milking procedures. Therefore, research focused on the environment is important to improve udder health programs. The objectives of this prospective and descriptive study were to (1) describe bedding bacterial counts, pH, and dry matter (DM) of five different bedding types (organic: manure solids, straw, paper fiber; inorganic: sand, recycled sand) and (2) explore the association between bedding bacterial counts with bulk tank milk quality. This study took place within five conveniently selected commercial dairy herds, each with a predominant bedding material in lactating pens. Bedding samples (used n = 237; fresh n = 53) were collected monthly from July 2018 to July 2019 following a standard operating procedure (SOP) to minimize sampling variability. Additionally, a bulk tank (BT) milk sample (n = 40) was collected on the same day unless milk had been picked up prior to arrival. Both BT and bedding samples were submitted to the laboratory for culture and bacterial identification and quantification of Streptococcus spp, coliforms, and non-coliforms as well as detection of several pathogens of mastitis importance. Somatic cell count was evaluated in BT samples. Within bedding type, the correlation between bedding characteristics and bacterial counts in bedding was evaluated using Pearson correlation. Within bedding type, the correlation between bacterial counts in bedding samples and bacterial counts in BT were determined. The Kruskal–Wallis test was used to evaluate the bacterial count by bedding type and to evaluate BT somatic cell count differences based on bedding type. In fresh bedding, bacterial counts were generally higher for manure solids for all bacterial groups compared with other materials. In used samples, organic materials had the highest levels of all bacterial groups. The proportion of samples with detectable organisms of mastitis importance varied within and among herds in both bedding and BT samples throughout the study period. In bedding samples, a higher DM content had the lowest levels of bacterial growth compared with those with lower DM content. Most bedding samples were on the alkaline side within a pH range of 8–11. No relationship between bacterial counts and pH was observed. No associations between BT bacteria counts and bedding bacterial counts were observed. No association between bulk tank somatic cell counts based on bedding type were observed. Despite using an SOP for bedding sampling in an effort to consistently collect samples, we still observed a large amount of variability both within and among bedding samples. This variability may have obscured any potential association between BT milk quality and bedding type.

scholarly journals Farm business and operator variables associated with bulk tank somatic cell count from dairy herds in the southeastern United States

2017 ◽  
Vol 100 (11) ◽  
pp. 9298-9310 ◽  
Author(s):  
Karen L. DeLong ◽  
Dayton M. Lambert ◽  
Susan Schexnayder ◽  
Peter Krawczel ◽  
Mark Fly ◽  
...  
Keyword(s):  
United States ◽  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Southeastern United States ◽  
Dairy Herds ◽  
Bulk Tank ◽  
Farm Business

scholarly journals Farm management factors associated with bulk tank somatic cell count in Irish dairy herds

2009 ◽  
Vol 62 (S4) ◽  
Author(s):  
PT Kelly ◽  
K O'Sullivan ◽  
DP Berry ◽  
SJ More ◽  
WJ Meaney ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Farm Management ◽  
Dairy Herds ◽  
Factors Associated ◽  
Bulk Tank ◽  
Management Factors

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

Relationship between somatic cell count, polymorphonuclear leucocyte count and quality parameters in bovine bulk tank milk

2009 ◽  
Vol 76 (2) ◽  
pp. 195-201 ◽  
Author(s):  
Erik Wickström ◽  
Karin Persson-Waller ◽  
Helena Lindmark-Månsson ◽  
Karin Östensson ◽  
Åse Sternesjö
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Rheological Properties ◽  
Somatic Cell Count ◽  
Leucocyte Count ◽  
Raw Milk ◽  
Polymorphonuclear Leucocyte ◽  
Milk Quality ◽  
Bulk Tank Milk ◽  
Bulk Tank

The somatic cell count (SCC) in bovine bulk tank milk is presently used as an indicator of raw milk quality, reflecting the udder health status of the herd. During mastitis, SCC increases, mostly owing to an influx of polymorphonuclear leucocytes (PMN) from blood into milk, with a concomitant change in milk composition. Bulk tank milk samples were categorized according to their SCC, as well as polymorphonuclear leucocyte count (PMNC), to study relationships between SCC, PMNC and various raw milk quality traits, i.e. contents of total protein, whey protein, casein, fat and lactose, casein number, proteolysis and rheological properties. The proportion of PMN, obtained by direct microscopy, was significantly higher in samples with high SCC compared with low SCC samples. SCC and PMNC were strongly correlated, yielding a correlation coefficient of 0·85. High SCC samples had lower lactose and casein contents, lower casein number and more proteolysis than low SCC samples. Samples with high PMNC had a lower casein number than low PMNC samples. Samples with high and low SCC or PMNC did not differ in respect to rheological properties. Our results do not indicate that PMNC is a better biomarker than SCC for raw bulk tank milk quality, as previously proposed.

scholarly journals Consequence of alternative standards for bulk tank somatic cell count of dairy herds in the United States

2011 ◽  
Vol 94 (12) ◽  
pp. 6243-6256 ◽  
Author(s):  
H.D. Norman ◽  
J.E. Lombard ◽  
J.R. Wright ◽  
C.A. Kopral ◽  
J.M. Rodriguez ◽  
...  
Keyword(s):  
United States ◽  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
The United States ◽  
Dairy Herds ◽  
Bulk Tank

Monitoring major mastitis pathogens at the population level based on examination of bulk tank milk samples

2009 ◽  
Vol 76 (1) ◽  
pp. 117-123 ◽  
Author(s):  
Dusan Rysanek ◽  
Monika Zouharova ◽  
Vladimir Babak
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Population Level ◽  
Dairy Herds ◽  
Bulk Tank Milk ◽  
Bacterial Counts ◽  
Bulk Tank ◽  
Environmental Pathogens ◽  
Mastitis Pathogens

The objective was to determine the proportions and bacterial counts of major mastitis pathogens in samples of bulk tank milk (BTM), as well as to clarify the relationship between these bacteria counts and bulk tank somatic cell count (BTSCC). The purpose was to judge the importance of the counts of mammary pathogens for BTSCC at the population level. Samples of BTM were collected from 268 randomly selected anonymous dairy herds (with approximately 29 000 dairy cows). Staphylococcus aureus, other coagulase-positive staphylococci, Streptococcus agalactiae and Streptococcus dysgalactiae were grouped as contagious pathogens, and Streptococcus uberis, Escherichia coli, Pseudomonas aeruginosa, Enterococcus faecalis and Enterococcus faecium as environmental pathogens. Based on assessment of the dominant pathogen in each herd, environmental pathogens were found to dominate. Counts of specific mammary pathogens in BTM samples did not exceed a geometric mean of 1000 cfu/ml. Significant differences were documented in BTSCC between BTM samples containing Str. agalactiae, Staph. aureus, and Str. dysgalactiae and BTM samples that were pathogen-free. Geometric means of BTSCC associated with these pathogens were noticeably higher than the overall BTSCC (Str. agalactiae 243 628; Staph. aureus 205 610; Str. dysgalactiae 203 978; overall 173 000 cells/ml). It follows that the somatic cell count (SCC) associated with these pathogens contributed substantially to the overall BTSCC. Environmental pathogens predominated in samples of BTM with SCC <300×103/ml and contagious mastitis pathogens predominated in BTM samples with SCC >300×103/ml. No correlation was detected between bacterial counts of specific pathogens and BTSCC. This study revealed that the assessment of bacterial counts of mammary pathogens in samples of BTM in relation to BTSCC is applicable for the monitoring of changes in the occurrence of major mastitis pathogens in dairy herds at a national level.

scholarly journals Temporal Trends in Bulk Tank Somatic Cell Count and Total Bacterial Count in Irish Dairy Herds During the Past Decade

2006 ◽  
Vol 89 (10) ◽  
pp. 4083-4093 ◽  
Author(s):  
D.P. Berry ◽  
B. O’Brien ◽  
E.J. O’Callaghan ◽  
K.O. Sullivan ◽  
W.J. Meaney
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Temporal Trends ◽  
Bacterial Count ◽  
Total Bacterial Count ◽  
Dairy Herds ◽  
The Past ◽  
Bulk Tank
Sign in / Sign up

Export Citation Format

Share Document