Correlation Between Bovine Milk Somatic Cell Count and Polymorphonuclear Leukocyte Level for Samples of Bulk Milk and Milk from Individual Cows

Kelly, Alan L.; Tiernan, Denise; O'Sullivan, Colette; Joyce, Patrick

doi:10.3168/jds.s0022-0302(00)74878-8

Cited by 62 publications

(60 citation statements)

References 17 publications

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“…In the present study, the decrease in milk yield and milk lactose rates were observed when SCC increased and these findings were in accordance with previous reports (Kelly et al, 2000;Fernandes et al, 2004;Bansal et al, 2005). However, it was determined that the milk fat rate was increased.…”

Section: Correlation Between Somatic Cell Count and Milk Compositionsupporting

confidence: 82%

Effect of Somatic Cell Count on Milk Yield and Composition of First and Second Lactation Dairy Cows

Çinar

Serbester

Ceyhan

et al. 2015

Italian Journal of Animal Science

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This study was carried out to investigate the effect of somatic cell count (SCC) on milk yield and milk composition in first and second lactation Holstein dairy cows. Thirty cows in first lactation and 49 cows in second lactation were used in the study. Animals were 15±9.87 days in milk. Individual milk samples were collected monthly from June 2009 to March 2010, and somatic cell counts, milk protein, milk fat, lactose and milk urea-N were determined. Four SCC groups were formed for determining effect of SCC on milk yield and composition. These groups were as follows: ≤200, 201-500, 501-999, and ≥1.000¥10 3 cell/mL. It was observed that SCC had a high significant effect on milk yield, milk protein, milk lactose (P<0.01), total solids and milk urea-N (P<0.05), however, the effect of SCC on milk fat was not significant (P>0.05). This study indicates that high SCC negatively affects not only milk yield but also milk composition and quality.

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Section: Correlation Between Somatic Cell Count and Milk Compositionsupporting

confidence: 82%

Effect of Somatic Cell Count on Milk Yield and Composition of First and Second Lactation Dairy Cows

Çinar

Serbester

Ceyhan

et al. 2015

Italian Journal of Animal Science

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“…Given the variability in inflammatory responses between all cows that make up a herd. An average bulk milk SCC of 50 000 cells/mL is therefore not a realistic goal [23,33]. Prevalence of infection increases with mean bulk milk SCC but this is not tight relationship due to the lognormal nature of cow SCC.…”

Section: Somatic Cell Count Patterns At Herd Levelmentioning

confidence: 99%

Monitoring udder health and milk quality using somatic cell counts

et al. 2003

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-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. Application of monitoring tools in herd health management are illustrated using a case study. Understanding infection dynamics requires precise longitudinal data. Monitoring tools are required to find the areas of risk in the herd. It is inevitable that more complete udder health programs and monitoring systems are to be developed and implemented. These programs are necessarily dynamic and complex. Implementation of complete udder health programs should be accompanied by research efforts to further fine-tune these complete udder health control and monitoring programs. somatic cell count / mastitis / milk quality / monitoring / epidemiology

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“…Recently, Cooney et al [15] have suggested the direct role of the proteases (particularly cathepsin D) of the polymorphonuclear leukocytes on the ripening of Swiss-type cheese and on the high level of indigenous proteolysis in milk with high SCC and high PMN content. For Kelly et al [33], it would be of great interest to link change in PMN concentration, and not just SCC, to milk quality or processing characteristics of milk, indeed PMN have different enzyme profiles than macrophages. For these authors, the possibility exists that PMN may act as a marker for certain functional properties of milk, which could be used by processors to screen bulk milks.…”

Section: The Relationship Between Scc and Cheese Yield (Tab Iii)mentioning

confidence: 99%

Polymorphonuclear proteolytic activity and milk composition change

Roux¹,

Laurent²,

Moussaoui³

2003

Vet. Res.

117

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-Relationships between Quarter Milk Cell Count (QMCC) and Tank Milk Cell Count (TMCC) with milk biochemical and technological parameters in milk and dairy products were investigated. All parameters measured were affected by the increase of TMCC and QMCC between 0 and 600 000 cells/mL. The variable effect of lactation stage which is different for different authors, is discussed. The three mechanisms, measured during the inflammation of the udder, implicated in the modification of milk quality are described (a decrease in synthesis, a decrease in the milk barrier permeability and an increase in proteolytic activities). The direct effect of plasmin in caseinolysis is well known; the specific role of the increase of somatic cells (especially PMN) in the modification of milk quality is described. Several specific proteolytic activities of PMN are described and the impact of these activities on caseinolysis is evaluated. Two hypothetical mechanisms of caseinolysis by PMN are suggested and a synthetic scheme of the role of plasmin, bacteria and somatic cells in caseinolysis is discussed. caseinolysis / mastitis / milk / PMN proteases / SCC

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Correlation Between Bovine Milk Somatic Cell Count and Polymorphonuclear Leukocyte Level for Samples of Bulk Milk and Milk from Individual Cows

Cited by 62 publications

References 17 publications

Effect of Somatic Cell Count on Milk Yield and Composition of First and Second Lactation Dairy Cows

Effect of Somatic Cell Count on Milk Yield and Composition of First and Second Lactation Dairy Cows

Monitoring udder health and milk quality using somatic cell counts

Polymorphonuclear proteolytic activity and milk composition change

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