Potential of specific milk composition variables for cow health management

Hamann, J.; Krömker, Volker

doi:10.1016/s0301-6226(97)00027-4

Cited by 85 publications

(84 citation statements)

References 10 publications

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“…The proportion of neutrophils is only 1-11% in a healthy quarter but increases up to 90% and more in a quarter with IMI [58]. The proportion of neutrophils as the percentage of the SCC has been proposed as a mastitis indicator [20]. It has been suggested that instead of total SCC, differential cell counting should Indicators of inflammation to detect mastitis 567 be performed which would provide more information about the health status of a quarter [47], but this approach has not been widely adapted and is not feasible in practical conditions.…”

Section: Milk Somatic Cell Countmentioning

confidence: 99%

“…The definition was a guide for diagnosis, even though 50% of Table I. Main changes in the production and composition of milk caused by mastitis [20,32,34]. …”

Section: Milk Somatic Cell Countmentioning

confidence: 99%

“…As many other mastitis parameters, conductivity is also influenced by the age of the cow and the stage of lactation [44]. The use of EC as a diagnostic method for the identification of subclinical mastitis has been studied for a long time with variable results [20,29]. A positive correlation was found between SCC and EC (0.51-0.75) and the use of inter quarter ratios enhances the evaluation [19,29].…”

Section: The Electrical Conductivity Of Milkmentioning

confidence: 99%

“…The lactose concentration of milk could be used as an indicator of mastitis, since it clearly decreases during inflammation. The percent decrease is, however, relatively small, which compromises the use of lactose to detect mastitis [3,20]. The association between lactose, SCC and mastitis has been studied already since the nineteen-eighties and the results are reviewed by Kitchen [32].…”

Section: Lactosementioning

confidence: 99%

“…A positive argument is that analysis methods for lactose are available on a large scale since lactose is monitored routinely as part of the herd milk recording systems along with fat and protein. Recently lactose was proposed to be one of the most useful markers of mastitis for the future use with a proposed threshold value of 4.7% [19,20]. However more practical experience is needed on the usefulness of lactose as a screening indicator.…”

Section: Lactosementioning

confidence: 99%

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Indicators of inflammation in the diagnosis of mastitis

2003

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-Mastitis affects the quality of milk and is a potential health risk for the other cows. In a well managed dairy herd, in addition to clinical mastitis, subclinical mastitis should be efficiently detected. Bacteriological sampling is not feasible as a routine test to identify subclinical mastitis, and indirect tests of mastitis are more suitable for selecting cows with intramammary infections for subsequent bacteriological sampling. Mastitis affects the composition of milk, and the degree of changes depends on the infecting agent and the inflammatory response. Indicators of inflammation in the milk which can be determined using rapid, reliable and easy routine techniques, can be used for the early detection of mastitis. The measuring of the somatic cell count in milk is the standard method, but the analysis technique is problematic for routine use in herds. The most promising parameters for monitoring subclinical mastitis are milk N-acetyl-b-D-glucosaminidase activity, lactose, and electrical conductivity along with some other indicators such as optical and milk flow measurements, preferably with an inter-quarter evaluation included in the test. Acute phase proteins, haptoglobin and serum amyloid A, are also potential candidates for mastitis monitoring. New mastitis detection systems which can be adapted into on-line use are urgently needed, since dairy units are growing bigger and automatic milking systems are being taken into use. mastitis / indicator of inflammation / somatic cell count / NAGase / electrical conductivity

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Section: Milk Somatic Cell Countmentioning

confidence: 99%

“…The definition was a guide for diagnosis, even though 50% of Table I. Main changes in the production and composition of milk caused by mastitis [20,32,34]. …”

Section: Milk Somatic Cell Countmentioning

confidence: 99%