Electrical conductivity of milk and bacteriological findings in cows with subclinical mastitis

Galfi, Annamaria; Radinović, Miodrag; Milanov, Dubravka; Boboš, Stanko; Pajić, Marija; Savić, Sara; Davidov, Ivana

doi:10.2298/bah1504533g

Cited by 11 publications

(9 citation statements)

References 12 publications

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“…Table 2). These results correspond with the findings of Galfi et al (2015). Chahar (2007) andLanger et al (2014) have reported lower percentage of true positive cases detected by Draminski mastitis test (38% and 7.6% respectively).…”

Section: Resultssupporting

confidence: 91%

Detection of subclinical mastitis in dairy cows using California and Draminski mastitis test

et al. 2017

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Control of udder health is an essential element in the process of safe milk production. Thus through the mastitis control program dairy farms regularly conduct measures of detection and prevention of udder diseases. Subclinical mastitis is an important disease of dairy cows causing economic losses and physical and chemical changes in milk. The aim of this research was to evaluate the usefulness of the California and the Draminski mastitis test to detect the subclinical mastitis in dairy cows. The efficacy of indirect mastitis tests for diagnosis of the subclinical mastitis was determined by comparing results of mastitis tests with bacteriological findings. The experiment was conducted on two dairy farms (farm A and farm B) Holstein -Friesian breed. A total of 245 quarter milk samples were examined, 95 quarter milk samples with the California mastitis test from farm A and 150 quarter milk samples with the Draminski mastitis test from farm B. A quarter milk samples for bacteriological analysis were taken aseptically during the morning milking in sterile test tubes. On farm A, bacteria growth has not been detected in 46.32% (44/95) quarter milk samples, while on farm B negative bacteriological findings have been found in 50.67% samples (76/150). In present study, sensitivity of the California mastitis test (78.57%) is higher than sensitivity of the Draminski mastitis test (74.32%). The specificity of the California mastitis test and the Draminski mastitis test is 82.05% and 30.26%, respectively. Efficacy of the California mastitis test in detection of the subclinical mastitis in dairy cows is better than that of the Draminski mastitis test, since accuracy of the California mastitis test has been higher.

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Section: Resultssupporting

confidence: 91%

Detection of subclinical mastitis in dairy cows using California and Draminski mastitis test

et al. 2017

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“…Subclinical mastitis is 15-40 times more common than the clinical form [ 33 ]. The important major mastitis pathogens are Escherichia coli , Staphylococcus aureus , and Streptococcus agalactiae [ 34 ].…”

Section: Immuno-pathogenesismentioning

confidence: 99%

Molecular markers for resistance against infectious diseases of economic importance

et al. 2017

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Huge livestock population of India is under threat by a large number of endemic infectious (bacterial, viral, and parasitic) diseases. These diseases are associated with high rates of morbidity and mortality, particularly in exotic and crossbred cattle. Beside morbidity and mortality, economic losses by these diseases occur through reduced fertility, production losses, etc. Some of the major infectious diseases which have great economic impact on Indian dairy industries are tuberculosis (TB), Johne’s disease (JD), mastitis, tick and tick-borne diseases (TTBDs), foot and mouth disease, etc. The development of effective strategies for the assessment and control of infectious diseases requires a better understanding of pathogen biology, host immune response, and diseases pathogenesis as well as the identification of the associated biomarkers. Indigenous cattle (Bos indicus) are reported to be comparatively less affected than exotic and crossbred cattle. However, genetic basis of resistance in indigenous cattle is not well documented. The association studies of few of the genes associated with various diseases, namely, solute carrier family 11 member 1, Toll-like receptors 1, with TB; Caspase associated recruitment domain 15, SP110 with JD; CACNA2D1, CD14 with mastitis and interferon gamma, BoLA-DRB3.2 alleles with TTBDs, etc., are presented. Breeding for genetic resistance is one of the promising ways to control the infectious diseases. High host resistance is the most important method for controlling such diseases, but till today no breed is total immune. Therefore, work may be undertaken under the hypothesis that the different susceptibility to these diseases are exhibited by indigenous and crossbred cattle is due to breed-specific differences in the dealing of infected cells with other immune cells, which ultimately influence the immune response responded against infections. Achieving maximum resistance to these diseases is the ultimate goal, is technically possible to achieve, and is permanent. Progress could be enhanced through introgression of resistance genes to breeds with low resistance. The quest for knowledge of the genetic basis for infectious diseases in indigenous livestock is strongly warranted.

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“…According to Galfi et al (2015), as a results of the damage to the udder tissue, concentration of lactose and potassium decrease, and concentration of sodium and chloride increase. Concentration of sodium and chloride ions increases in milk from infected quarters which leads to increased electrical resistance of milk.…”

Section: Discussionmentioning

confidence: 99%

“…Density, protein and fat were detected by Lactoscan MCC. Electrical resistance was detected by Hand-held EC Meter Draminski Mastitis Detector, Poland (Galfi et al, 2015). The results of milk electrical resistance were interpreted according to the manufacturer's instructions (Table 1).…”

Section: Physicochemical and Microbial Activity Assaymentioning

confidence: 99%

Physicochemical Quality and Microbial Activity of Dairy Milk with Ozonation

Suprapto¹,

Radiati

Mahdi

et al. 2021

JITEK

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The aim of this study was to evaluate the effect of ozone exposure to the physicochemical and microbial activity in dairy milk. The research material was fresh milk from dairy cows and ozone was produced by commercial ozone generator brand HANACO, production capacity up to 0.702 mg/min at 24-27ºC with oxygen source coming from ambient air in the nature. The experiment used ozone treatments for 0, 10, 20, and 30 min with variable of analysis such as density, protein, fat, electrical resistance, total plate count, and malondialdehyde which was analyzed using One Way Annova. The results showed that ozone treatment had no significant effect on the density, protein and fat in dairy milk, but had significant (P<0.05) effect on the electrical resistance, total plate count, and production of malondialdehyde. Electrical resistance and malondialdehyde were increased, while total plate count was decreased over time with the ozone exposure. Ozonation is possible to reducing yield loss on milk production that is caused by microbial activity without changing the physicochemical properties of dairy milk.

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Electrical conductivity of milk and bacteriological findings in cows with subclinical mastitis

Cited by 11 publications

References 12 publications

Detection of subclinical mastitis in dairy cows using California and Draminski mastitis test

Detection of subclinical mastitis in dairy cows using California and Draminski mastitis test

Molecular markers for resistance against infectious diseases of economic importance

Physicochemical Quality and Microbial Activity of Dairy Milk with Ozonation

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