scholarly journals ЕТІОЛОГІЧНІ ЧИННИКИ МАСТИТІВ КОРІВ УКРАЇНСЬКОЇ ЧОРНО–РЯБОЇ МОЛОЧНОЇ ПОРОДИ

2016 ◽  
Vol 18 (3(70)) ◽  
pp. 191-196
Author(s):  
V. Panevnyk ◽  
T. Suprovych
Keyword(s):  
Staphylococcus Aureus ◽  
Somatic Cells ◽  
Raw Milk ◽  
Subclinical Mastitis ◽  
Index Number ◽  
Clinical Form ◽  
Leading Role ◽  
Skin Contamination ◽  
Major Pathogens ◽  
And Staphylococcus Aureus

The article shows data on the microbial landscape and quantity of somatic cells milk in different forms of mastitis in cows. Index number of somatic cells (SCC) in the raw milk of cows in the country is only used to establish the quality milk. They are key safety indicators that are directly related to udder cow disease, especially subclinical mastitis. Research has established that the number of SCC in healthy animals ranges from 84000 cells/ml to 436000 cells/ml. Over the course of subclinical turned from 508000 cells/ml to 756000 cells/ml. Animals with clinical form of mastitis were from 876000 cells/ml to 69260000 cells/ml. The 42 cows of the first lactation average SCC was 143000 cells/ml, and 47 of fifth lactation cows – 213000 cells/ml.The microflora in the breast can get in different ways: galactogenous – through teat channel hematogenous ahd lymphogenous ways. The leading role galactogenous way in which the pathogens penetrate from the environment through teat channel. This contributes to the udder skin contamination by microorganisms. Activators of subclinical mastitis were Staphylococcus aureus 31.8% and Streptococcus agalactiae 40.9%. In the clinical course of mastitis major pathogens were Escherichia coli – 34.8% and Staphylococcus aureus – 41.3%. Selected cultures of microorganisms were sensitive to cephalexin, gentamicin, oxacillin, rifampicin, enrofloksacin. 

scholarly journals NaOCl effect on biofilm produced by Staphylococcus aureus isolated from the milking environment and mastitis infected cows

2014 ◽  
Vol 34 (2) ◽  
pp. 109-113 ◽  
Author(s):  
Poliana de Castro Melo ◽  
Cláudia Sousa ◽  
Cláudia Botelho ◽  
Rosário Oliveira ◽  
Antonio Nader-Filho
Keyword(s):  
Staphylococcus Aureus ◽  
Raw Milk ◽  
Subclinical Mastitis ◽  
Aureus Strain ◽  
Contact Period ◽  
Physical Barrier ◽  
Total Period ◽  
Milk Processing ◽  
Milk Contamination ◽  
And Staphylococcus Aureus

Biofilms constitute a physical barrier, protecting the encased bacteria from detergents and sanitizers. The objective of this work was to analyze the effectiveness of sodium hypochlorite (NaOCl) against strains of Staphylococcus aureus isolated from raw milk of cows with subclinical mastitis and Staphylococcus aureus isolated from the milking environment (blowers and milk conducting tubes). The results revealed that, in the presence of NaOCl (150ppm), the number of adhered cells of the twelve S. aureus strains was significantly reduced. When the same strains were evaluated in biofilm condition, different results were obtained. It was found that, after a contact period of five minutes with NaOCl (150ppm), four strains (two strains from milk , one from the blowers and one from a conductive rubber) were still able to grow. Although with the increasing contact time between the bacteria and the NaOCl (150ppm), no growth was detected for any of the strains. Concerning the efficiency of NaOCl on total biofilm biomass formation by each S. aureus strain, a decrease was observed when these strains were in contact with 150 ppm NaOCl for a total period of 10 minutes. This study highlights the importance of a correct sanitation protocol of all the milk processing units which can indeed significantly reduce the presence of microorganisms, leading to a decrease of cow´s mastitis and milk contamination.

scholarly journals Preliminary study of homeopathic treatment of subclinical mastitis evaluated through somatic cells count (SCC) and California mastitis test (CMT)

2021 ◽  
Vol 7 (24) ◽  
pp. 147-151
Author(s):  
Zilda Cristiani Gazim ◽  
Orlando Seiko Takemura ◽  
Luiz Cláudio Monteiro da Silva ◽  
Carlos Massambani ◽  
Roberson Eduardo Moraes ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Somatic Cells ◽  
Subclinical Mastitis ◽  
Clinical Aspects ◽  
Infection Level ◽  
Homeopathic Treatment ◽  
Holstein Breed ◽  
California Mastitis Test ◽  
End Of Treatment ◽  
Preliminary Study

The present paper presents the results of homeopathic treatment of 25 Holstein breed cows aged 3 to 8 years old diagnosed with subclinical mastitis through California Mastitis Test (CMT). Animals were divided into 3 groups according with infection level. A homeopathic complex was developed on the grounds of clinical aspects, including Phosphorus 30x, Phytolacca 30x, Silicea 30x, Sulphur 30x, Belladona 30x, Bryonia alba 30x, Pulsatilla 30x, Calendula 30x and biotherapic of Staphylococcus aureus 200x. The remedy was added to salt and was administered to cattle 100g/cow/day for 75 days. CMT were carried out every 2 weeks to control incidence and severity of mastitis; somatic cells count (SCC) was performed at the beginning and the end of treatment. CMT showed significant improvement in regression of infection level all throughout the study; final SCC showed decrease in 82% of animals, signaling thus efficacy of the homeopathic treatment. Keywords:  Subclinical mastitis; Dairy cows; Homeopathy; California Mastitis Test, Somatic Cells Count.   Estudo preliminar do tratamento homeopático da mastite subclínica avaliado por contagem de células somáticas (SCC) e California Mastitis Test (CMT) Resumo Este artigo apresenta os resultados do tratamento homeopático de 25 vacas raça Holstein entre 3 e 8 anos de idade diagnosticadas com mastite subclínica através do California Mastitis Test (CMT). Os animais foram divididos em 3 grupos de acordo com o nível da infecção. Foi preparado um complexo homeopático com base nos achados clínicos, composto de: Phosphorus 30X, Phytolacca 30x, Sulphur 30x, Belladona 30x, Bryonia alba 30x, Silicea 30x, Pulsatilla 30x, Calendula 30x s 30X, Phytolacca 30x, Sulphur 30x, Belladona 30x, Bryonia alba 30x, Silicea 30x, Pulsatilla 30x, Calendula 30x e bioterápico de Staphylococcus aureus 200x. O complexo foi acrescentado no sal e administrado na dose de 100g/vaca/dia. O CMT foi realizado a cada 2 semanas a fim de monitorar a incidéncia e gravidade da mastitie; a contagem de células somáticas (SCC) foi realizada ao início e no final do tratamento. Os valores do CMT mostraram melhora significativa no sentido de regressão do nível da infecção ao longo do estudo; o valor final da SCC diminuiu em 82% dos animais, apontando para a eficácia do tratamento homeopático. Palavras-chave:  Mastite subclínica; Vacas leiteiras; Homeopatia; CMT, contagem de células somáticas.   Estudio preliminar del tratamiento homeopático de la mastitis sublínica evaluado mediante recuento de células somáticas (SCC) y California Mastitis Test (CMT) Resumen Este artículo presenta los resultados del tratamiento homeopático de 25 vacas raza Holstein entre 3 e 8 años de edad diagnosticadas com mastitis sucblínica mediante California Mastitis Test (CMT). Los animales fueron divididos en 3 grupos según el nível de la infección. Fue compuesto un complejo homeopático con base en la presentación clínica, incluyendo Phosphorus 30X, Phytolacca 30x, Sulphur 30x, Belladona 30x, Bryonia alba 30x, Silicea 30x, Pulsatilla 30x, Calendula 30x y bioterápico de Staphylococcus aureus 200x. El complejo fue agregado en sal y administrado a los animales en la dosis de 100g/vaca/día. CMT fue realizado cada 2 semanas para monitorizar la incidencia y gravedad de la mastitis; recuento de células somáticas (SCC) fue realizado al inicio y al final del tratamiento. CMT mostró mejoría significativa en el sentido de regresión del nivel de la infección a lo largo del estudio; el valor final del SCC disminuyó en 82% de los animales, apuntando para la eficacia del tratamiento homeopático. Palabras-clave:  Mastitis subclínica; Vacas lecheras; Homeopatía; CMT, recuento de células somáticas.   Correspondence author:  Zilda Cristiani Gazim, [email protected] How to cite this article:  Barzon CD, Medeiros F, Moraes RE, Silva LCM, Massambani C, Takemura OS, Gazim ZC. Preliminary study of homeopathic treatment of subclinical mastitis evaluated through somatic cells count and California mastitis test. Int J High Dilution Res [online]. 2008 [cited YYYY Mmm DD]; 7(24): 147-151. Available from: http://journal.giri-society.org/index.php/ijhdr/article/view/292/364.  

Risk from Staphylococcus aureus in informally marketed raw cow milk

2019 ◽  
Vol 2 (1) ◽  
pp. 74 ◽  
Author(s):  
Desislava Bangieva ◽  
Valentin Rusev
Keyword(s):  
Staphylococcus Aureus ◽  
16S Rrna ◽  
Pcr Amplification ◽  
Raw Milk ◽  
Cow Milk ◽  
Pcr Analysis ◽  
Milk Samples ◽  
Staphylococcus Spp ◽  
And Staphylococcus Aureus

This study aimed to investigate the presence of Staphylococcus spp. and Staphylococcus aureus in raw cow milk samples taken from peddlers of five regions in Bulgaria. The results showed that all 44 samples tested were positive for Staphylococcus spp. All isolates were tested for coagulase production and subjected to PCR analysis. PCR amplification of 16S rRNA and nuc genes found the presence of Staphylococcus aureus in 23 (52.3%) of a total of 44 raw milk samples. The number of Staphylococcus spp. ranged from 3x102 to 1.08x106 cfu/ml, and that of Staphylococcus aureus from 1.5x102 to 3.19x105 cfu/ml. It is concluded that control over the hygiene of handling and processing raw milk is essential for its safety.

Coagulase gene polymorphism and antimicrobial susceptibility of Staphylococcus aureus isolated from bovine subclinical mastitis milk in Sidi-Bel-Abbes, Algeria

2017 ◽  
Vol 7 (1) ◽  
pp. 21-27
Author(s):  
Ahmed Reda Belmamoun ◽  
Abdelkader Ammam ◽  
Imene Berrabah ◽  
Karima Bereksi Reguig
Keyword(s):  
Staphylococcus Aureus ◽  
Protein A ◽  
Pcr Amplification ◽  
Screen Test ◽  
Raw Milk ◽  
Subclinical Mastitis ◽  
Latex Agglutination ◽  
Pcr Analysis ◽  
California Mastitis Test ◽  
Coa Gene

The study was conducted to identify and characterize Staphylococcus aureus in raw milk derived from subclinical mastitis in Sidi-Bel-Abbes Algeria. In this paper, we explore the possibility of detection of the coagulase gene (coa), which encodes the coagulase enzyme, by PCR analysis in antibiotic-resistant isolates, with the latex agglutination phenotype and free coagulase.Out of 336 samples of raw milk examined with California mastitis test (CMT) posi-tive; a total of 142 samples were bacteriologically positive with 56.34% Staphylococcus isolates, 21 (26.25%) isolates were confirmed as S.aureus. Nineteen (90.48%) isolates of S.aureus showed free coagulase on the tube agglutination test. Two atypical S.aureus strains (9.52%) were defective for the clumping factor and / or protein A , determined with the Staphytect plus test and the tube coagulase test. The isolates of S.aureus were resistant to penicillin and tetracycline with 76.19%. Two isolates (9.52%) of S.aureus re-sistant to meticillin (MRSA) were detected in this study, with a MIC of ≥4 μg / liter and a cefoxitin screen test with a MIC of ≥8 μg / liter, and 13 (61.9%) isolates were with a multiresistance phenotype. The 21 isolates were sub-jected to PCR amplification of the 3' end of the coa gene, 18 (85.71%) were revealed on a 1% agarose gel with a single band between 547 bp and 875 bp. The use of the PCR genotypic test to identify the profile of the coa gene can be used as an appropriate identification criterion for differentiating coagulases from S.aureus and for understanding their epidemiology.

scholarly journals Optimal environmental and culture conditions allow the in vitro coexistence of Pseudomonas aeruginosa and Staphylococcus aureus in stable biofilms

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Maria del Mar Cendra ◽  
Núria Blanco-Cabra ◽  
Lucas Pedraz ◽  
Eduard Torrents
Keyword(s):  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Culture Media ◽  
Culture Conditions ◽  
Single Organism ◽  
Bacterial Fitness ◽  
Major Pathogens ◽  
And Staphylococcus Aureus ◽  
Stable Formation

Abstract The coexistence between species that occurs in some infections remains hard to achieve in vitro since bacterial fitness differences eventually lead to a single organism dominating the mixed culture. Pseudomonas aeruginosa and Staphylococcus aureus are major pathogens found growing together in biofilms in disease-affected lungs or wounds. Herein, we tested and analyzed different culture media, additives and environmental conditions to support P. aeruginosa and S. aureus coexistence in vitro. We have unraveled the potential of DMEM to support the growth of these two organisms in mature cocultured biofilms (three days old) in an environment that dampens the pH rise. Our conditions use equal initial inoculation ratios of both strains and allow the stable formation of separate S. aureus microcolonies that grow embedded in a P. aeruginosa biofilm, as well as S. aureus biofilm overgrowth when bovine serum albumin is added to the system. Remarkably, we also found that S. aureus survival is strictly dependent on a well-characterized phenomenon of oxygen stratification present in the coculture biofilm. An analysis of differential tolerance to gentamicin and ciprofloxacin treatment, depending on whether P. aeruginosa and S. aureus were growing in mono- or coculture biofilms, was used to validate our in vitro coculture conditions.

scholarly journals Haptoglobin and lactate dehydrogenase measurements in milk for the identification of subclinically diseased udder quarters

2008 ◽  
Vol 52 (No. 6) ◽  
pp. 245-252 ◽  
Author(s):  
S. Hiss ◽  
U. Mueller ◽  
A. Neu-Zahren ◽  
H. Sauerwein
Keyword(s):  
Lactate Dehydrogenase ◽  
Skim Milk ◽  
Raw Milk ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Detection Methods ◽  
Line System ◽  
Ldh Activity ◽  
On Line ◽  
Major Pathogens

Diagnosis of subclinical mastitis is of increasing importance and appropriate detection methods are needed. Both haptoglobin (Hp), an acute phase protein in cattle, as well as lactate dehydrogenase (LDH), an ubiquitous enzyme, can be successfully used to detect clinical mastitis. The present paper describes quantification of Hp and LDH in milk samples from healthy and subclinically diseased udder quarters. Hp was analysed in the laboratory using an ELISA. The activity of LDH was measured in raw milk directly in the milking parlor. Both parameters were suitable to distinguish between sterile samples and bacteriologically positive samples. The ability to differentiate between minor and major pathogens was better for Hp in skim milk than for LDH in raw milk. Hp and somatic cell count (SCC) as well as LDH and SCC were positively correlated (<i>r</i> = 0.8 and <i>r</i> = 0.76, respectively). Subclinical mastitis was defined as follows: SCC > 100 &times; 10<sup>3</sup> cells/ml and bacteriological positive findings in two out of three weekly samples. Sensitivity and specificity were above 85% for Hp and above 81% for LDH. Using a less rigid classification to define mastitis, i.e. SCC &lt; 200 &times; 10<sup>3</sup> cells/ml and two out of three weekly samples bacteriologically positive, sensitivity for Hp improved (89%) and remained unchanged for LDH. Both parameters are useful parameters for the diagnosis of subclinical mastitis. LDH activity in raw milk was less sensitive and specific than Hp but the method described herein offers the opportunity to measure LDH activity directly in the milking parlor and might therefore be suitable for on-line system developments.

scholarly journals Public health risks of Escherichia coli and Staphylococcus aureus in raw bovine milk sold in informal markets in Egypt

2018 ◽  
Vol 12 (07) ◽  
pp. 533-541 ◽  
Author(s):  
Walid Elmonir ◽  
Etab Abo-Remela ◽  
Azza Sobeih
Keyword(s):  
Public Health ◽  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Health Risks ◽  
Raw Milk ◽  
Informal Markets ◽  
E Coli ◽  
Milk Samples ◽  
Public Health Risks ◽  
And Staphylococcus Aureus

Introduction: Milk is an important food in Egypt and most of it is sold as raw milk in informal markets. Methodology: This study was conducted to investigate the public health risks of Escherichia coli and Staphylococcus aureus in milk sold in informal markets in Egypt. A total of 121 milk samples were analyzed for occurrence, virulence genes and antibiotic resistance of E. coli and S. aureus. Results: A total of 35/121 (28.9%) of milk samples were contaminated with 16/121 (13.2%) E. coli, 22/121 (18.2%) S. aureus, and 3/121 (2.5%) both isolates. Shiga-toxin producing E. coli (STEC), Enterotoxigenic E. coli (ETEC) and Enterotoxigenic S. aureus were detected in 5/121 (4.1%), 2/121 (1.7%) and 8/121 (6.6%) of the examined milk samples, respectively. Multiple drug resistances (MDRs) were showed by 14/16 (87.5%) and 21/22 (95.5%) of E. coli and S. aureus isolates, respectively. E. coli isolates showed high resistance for cephalothin (87.5%), ampicillin (68.8%) and tetracycline (68.8%), but were sensitive for gentamicin and chloramphenicol. Resistance phenotypes of E. coli were diverse; however, STEC isolates were significantly associated with co-resistance to cephalothin, ampicillin and tetracycline (P< 0.05). Two (9.1%) of S. aureus isolates were methicillin-resistant (MRSA) but sensitive to gentamicin (GS-MRSA). Five (22.7%) of S. aureus isolates were gentamicin-resistant methicillin-sensitive S. aureus (GR-MSSA). S. aureus isolates also showed high resistance for ampicillin (100%), tetracycline (90.1%) and sulfamethoxazole-trimethoprim (90.1%). Conclusion: These findings highlighted the potential public health hazards of E. coli and S. aureus pathogens in raw milk sold in informal markets in Egypt.

scholarly journals Impact of Subclinical Mastitis-causing Bacterial Species on the Composition and Chemical Properties of Milk

2021 ◽  
Author(s):  
Tarik Safak ◽  
Ali Risvanli ◽  
Zulal Ascı-Toraman
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Streptococcus Agalactiae ◽  
Bacterial Species ◽  
Chemical Properties ◽  
Subclinical Mastitis ◽  
Milk Composition ◽  
Mineral Matter ◽  
California Mastitis Test ◽  
And Staphylococcus Aureus

Background: Here we investigate whether the composition and some chemical properties of milk can correlate with bacterial species causing subclinical mastitis in cows. Methods: One hundred and eighty cows were used in the study. The California Mastitis Test (CMT) was applied to the selected cows. The cows were divided into four groups: cows with negative CMT (n = 45), the Escherichia coli (n = 45), Streptococcus agalactiae (n = 45) and Staphylococcus aureus (n = 45) groups. Result: Milk composition and some chemical properties were measured. The highest fat ratio (5.82±0.34%) was found in the Escherichia coli group (p less than 0.05). The proportions of solid-non-fat (9.67±0.09%), protein (3.51±0.03%), lactose (5.29±05%) and mineral matter (0.75±0.01%) were lowest in the Escherichia coli group (p less than 0.05). The electrical conductivity of milk was lowest in the CMT-negative group (4.23±0.02 mS/cm), while the Streptococcus agalactiae group had the highest value (4.61±0.02 mS/cm) (p less than 0.05). The specific gravity of the Escherichia coli group was lower than the CMT-negative (1,034.91±0.56 kg/m3) and Staphylococcus aureus (1,034.24±0.65 kg/m3) groups (p less than 0.05). Based on our findings, we propose that milk composition and some chemical parameters are altered in subclinical mastitis. However, these could not be standardized according to the responsible bacterial species. We recommend that these parameters are monitored regularly on dairy farms.

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