scholarly journals Yeasts as a causative agent of bovine mastitis in Greece

2018 ◽  
Vol 54 (2) ◽  
pp. 105 ◽  
Author(s):  
E. BOURTZI-HATZOPOULOU (Ε. ΜΠΟΥΡΤΖΗ-ΧΑΤΖΟΠΟΥΛΟΥ) ◽  
A. ZDRAGAS (Α. ΖΔΡΑΓΚΑΣ) ◽  
E. PETRIDOU (Ε. ΠΕΤΡΙΔΟΥ) ◽  
G. FILIOUSIS (Γ. ΦΙΛΙΟΥΣΗΣ)
Keyword(s):  
Mammary Gland ◽  
Dairy Cows ◽  
Bovine Mastitis ◽  
Economic Loss ◽  
Geotrichum Candidum ◽  
Clinical Mastitis ◽  
Antibacterial Treatment ◽  
Northern Greece ◽  
Milk Samples ◽  
Mastitic Milk

The aim of this study was to isolate fungi from mastitic milk of dairy cows and to identify fungal microorganisms involved in bovine mastitis. A total of 608 milk samples from clinical mastitis quarters from 580 animals in Northern Greece were collected, during the years 1997-2001. Antibacterial treatment was administrated to 50% of the sampled animals. Forty two (42) fungi were isolated and identified using mycological media and methods. From the 42 fungi isolates, 38 were yeasts and 4 moulds. The yeasts isolated were classified into the genera Candida, Geotrichum, Rhodotorula. From the thirty four (34) Candida species, 14 were identified as G tropicalis and 6 as G krusei. Furthermore, 4 isolates were classified as G pseudotropicalis, 4 as G albicans, 3 as G parapsilosis and 3 as G rugosa. Geotrichum candidum and Rhodotorula spp. were represented with 2 isolates. The isolated moulds were classified into the genus Aspergillus. Fungi were isolated in pure culture from 38 milk samples and in mixed culturewith bacteria from 4. In 510 samples only bacteria were cultured, while in 56 samples no growth of microorganism was observed. The results of the present study indicate that a level of 6.9% of mycotic mastitis is significant and yeasts are apparently implicated in mammary gland pathology causing economic loss.

scholarly journals Mycoplasmal mastitis in dairy cows in the Moghan region of Ardabil State, Iran : short communication

2006 ◽  
Vol 77 (4) ◽  
Author(s):  
C. Ghazaei
Keyword(s):  
Dairy Cows ◽  
Short Communication ◽  
Bovine Mastitis ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Mycoplasma Bovis ◽  
Bulk Tank Milk ◽  
Milk Samples ◽  
The World ◽  
Bulk Tank

Mycoplasmas are an important and economically significant cause of mastitis in dairy cows in various parts of the world. The organisms are highly contagious, with the main reservoir of infection originating from cows with subclinical mastitis. In 1998 the 1st cases of bovine mastitis due to Mycoplasma bovis were diagnosed in Ardabil State, Iran. An investigation was carried out with the aim of establishing the extent of mycoplasma infections in dairy cows in Ardabil State. Milk samples obtained from 80 cows with clinical mastitis were cultured in the laboratory for the presence of mycoplasmas. Similarly, 48 bulk-tank milk samples were examined for the presence of mycoplasmas. A modified Hayflick broth was used to isolate the mycoplasmas and an immunoperoxidase test used for the species identification of the isolates. Mycoplasma bovis was isolated from 39 (48.75 %) of the clinical mastitis samples and from 48 of the bulk-tank milk samples tested. This indicated that mycoplasma udder infections were more prevalent in dairy cows in Ardabil State than previously thought.

scholarly journals Prevalence of bovine mastitis pathogens and antibioresistance of Escherichia coli isolates

2017 ◽  
Vol 55 (2) ◽  
pp. 113
Author(s):  
A. ZDRAGAS (Α. ΖΔΡΑΓΚΑΣ) ◽  
P. TSAKOS (Π. ΤΣΑΚΟΣ) ◽  
K. ANATOLIOTIS (Κ. ΑΝΑΤΟΛΙΩΤΗΣ)
Keyword(s):  
Escherichia Coli ◽  
Bovine Mastitis ◽  
Clinical Mastitis ◽  
Resistance Rate ◽  
Northern Greece ◽  
E Coli ◽  
Milk Samples ◽  
Staphylococcus Spp ◽  
Klebsiella Spp ◽  
Mastitis Pathogens

Nine hundred and fifty two milk samples from clinical bovine mastitis cases, originated from 269 farms in Northern Greece, were tested. Escherichia coli was isolated in 49.3% of samples. Furthermore, Staphylococcus spp, Corynebacterium spp, Streptococcus spp, Pseudomonas spp, Proteus spp, Klebsiella spp or a combination of the above bacteria were isolated. The bacteriological result from 4.3% of samples was negative. No correlation between clinical mastitis cases and seasonal variation was observed. Resistance of E. coli isolates to tetracycline was 82-96%, to enrofloxacin 10-30%, to gentamicin 58-80%, to cephalosporins 47-75%, to sulfamethoxazole-trimethoprime 46-81%, to ampicillin 71-92% and to neomycin 83-97%. The highest resistance rate and the appearance of multi-resistant isolates of E. coli (6%), to 8 antibacterials, were recorded during the last year of the survey.

scholarly journals Prevalence of Mastitis Pathogens and Antimicrobial Susceptibility of Isolates From Cattle and Buffaloes in Northwest of Pakistan

2021 ◽  
Vol 8 ◽  
Author(s):  
Tariq Ali ◽  
Kamran ◽  
Abdur Raziq ◽  
Inamullah Wazir ◽  
Rafi Ullah ◽  
...  
Keyword(s):  
Antimicrobial Susceptibility ◽  
Antimicrobial Agents ◽  
Bovine Mastitis ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Diffusion Method ◽  
Economic Losses ◽  
Bacterial Isolates ◽  
Milk Samples ◽  
Mastitic Milk

Mastitis is the most prevalent disease of dairy animals, imparting huge economic losses to the dairy industry. There is always a dire need to monitor the prevalence of mastitis, its bacteriology, and evaluation of antimicrobial susceptibilities for mastitis control and prevention. Therefore, the objectives of this study were to investigate: (i) the prevalence of mastitis in cattle and buffaloes; (ii) identification of bacteria associated with mastitis; (iii) antimicrobial susceptibility of bacterial isolates. Milk samples (n = 1,566) from cattle (n = 1,096) and buffaloes (n = 470) were processed for detection of mastitis using the California mastitis test in the year 2018–19. A total of 633 mastitic milk samples were further processed for bacteriology and antimicrobial susceptibility testing by the disc diffusion method. Overall, the prevalence of clinical and subclinical mastitis was 17 and 57% in both species. Clinical mastitis was higher in cattle (20%) compared to buffaloes (11%), whereas subclinical was higher in buffaloes (66%) than cattle (53%). Besides, month-wise prevalence was higher in hot and humid months in both species. Staphylococci spp. (34%) were the most predominant bacterial isolates from mastitic milk, followed by Escherichia coli (19.4%), Streptococci spp. (9%), and Klebsiella spp. (8%). Most of the bacteria were susceptible to gentamicin (92%) and enrofloxacin (88%), when a panel of 16 different antimicrobials was tested. Nevertheless, most of the isolates were resistant to sulphamethoxazole (99%), lincomycin (98%), oxytetracycline (89%), ampicillin (86%), and doxycycline (85%). This study concludes a high prevalence of mastitis caused by Staphylococcal spp. in cattle and buffaloes belonging to the northwest of Pakistan, and gentamicin and enrofloxacin might be appropriate antimicrobial agents in the treatment of bovine mastitis.

scholarly journals Antimicrobial Study of Clinical Mastitic Milk Samples of Cows in and Around Bikaner

2019 ◽  
Vol 15 (02) ◽  
pp. 74-75
Author(s):  
Sandhya Morwal ◽  
AP Singh ◽  
SK Sharma ◽  
Deepika Goklaney
Keyword(s):  
Mammary Gland ◽  
Pathogenic Bacteria ◽  
Clinical Mastitis ◽  
Economic Losses ◽  
Dairy Herds ◽  
Cost Of Treatment ◽  
Milk Samples ◽  
Dairy Animals ◽  
Mastitic Milk ◽  
Major Alteration

Mastitis, an inflammatory condition of the mammary gland, is one of the most economically important diseases of dairy herds. This disease is more prevalent in high yielding dairy cattle. It is caused due to colonization of pathogenic bacteria causing series of events that lead to major alteration in the mammary tissues and composition of milk secreted from the tissue cells (Batavani et al., 2007; Goel et al., 2008). Clinical mastitis is recognized by abnormal milk, varying degree of mammary gland inflammation (redness, heat, swelling and pain) with or without illness of the cow. Mastitis in dairy animals leads to heavy economic losses due to reduction in milk production, altered composition, and cost of treatment of affected animals. The clinical mastitis in different cases can be identified by external symptoms such as udder swelling, touch, pain, redness and hardness of the udder. The objective of the present study was to assess the sensitivity of bacterial isolates from mastitic milk samples of cows to some selected antibiotics.

scholarly journals An Untargeted Metabolomics Investigation of Milk from Dairy Cows with Clinical Mastitis by 1H-NMR

Foods ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1707
Author(s):  
Chenglin Zhu ◽  
Kaiwei Tang ◽  
Xuan Lu ◽  
Junni Tang ◽  
Luca Laghi
Keyword(s):  
Dairy Cows ◽  
1H Nmr ◽  
Tricarboxylic Acid Cycle ◽  
Tca Cycle ◽  
Quantitative Information ◽  
Clinical Mastitis ◽  
Economic Losses ◽  
Resonance Spectroscopy ◽  
Mastitic Milk ◽  
Chemical Groups

Mastitis is one of the diseases with the highest incidence in dairy cows, causing huge economic losses to the dairy industry all over the world. The aim of the study was to characterize mastitic milk metabolome through untargeted nuclear magnetic resonance spectroscopy (1H-NMR). Taking advantage of the high reproducibility of 1H-NMR, we had the opportunity to provide quantitative information for all the metabolites identified. Fifty-four molecules were characterized, sorted mainly into the chemical groups, namely amino acids, peptides and analogues, carbohydrates and derivates, organic acids and derivates, nucleosides, nucleotides and analogues. Combined with serum metabolomic investigations, several pathways were addressed to explain the mechanisms of milk metabolome variation affected by clinical mastitis, such as tricarboxylic acid cycle (TCA cycle) and phenylalanine, tyrosine and tryptophan biosynthesis. These results provide a further understanding of milk metabolome altered by clinical mastitis, which can be used as a reference for the further milk metabolome investigations.

scholarly journals FARMERS’ KNOWLEDGE, ATTITUDE AND PRACTICES OF MASTITIS IN DAIRY COWS AT SELECTED AREAS OF BANGLADESH

2018 ◽  
Vol 16 (1) ◽  
pp. 65-70
Author(s):  
M. A. Rahman ◽  
Y. A. Sarker ◽  
M. M. Parvej ◽  
A. Parvin ◽  
M. A. Rimon ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Research Work ◽  
Bovine Mastitis ◽  
Clinical Mastitis ◽  
Village Doctor ◽  
Dairy Farmers ◽  
Face To Face ◽  
Antiseptic Solution ◽  
Dry Cow Therapy ◽  
Source Of Infection

The research work was designed to assess farmers’ knowledge, attitude and practices about bovine mastitis. The data were collected by using structured questionnaire through face to face interview techniques among the 65 dairy farmers of Dhaka, Mymensingh, and Gazipur.  Disproportionate stratified random sampling was used to select the farmers based on study areas. Most of the studied farms are small (75.4%) in the studied area, only a few (10.8%) farms were large in Dhaka. In Gazipur and Mymensingh almost (86.2%) firms were small and rest of (13.8%) was medium. According to farmer’s knowledge, major cause of mastitis was microorganisms (46.15%), but 20% farmer reported that it is due to injury and 27.69% farmer don’t know the causes of the mastitis. Most of the farmers (87.7%) think that the source of infection is unhygienic floor, but others have no clear conception about it. Before milking only 23.10% farmers’ wash the whole udder where 58.5% used single towel. About 76.9% farmers have no knowledge of screening mastitis and only 9.2% of total farmers performed regular mastitis checking. Among the farmers, 55.4% are used antiseptic solution during washing the floor and others wash their floor only by water. Highest number of farmer use Tube well water (44.6%) for daily management of their farms. Most of the farmer takes suggestions from village doctor or pharmaceutical representative (64.62%) for maintaining the diseases condition. This study recommends that identification of factors associated with sub-clinical mastitis will help to take necessary steps to reduce the prevalence of sub-clinical mastitis. The most effective way to control sub-clinical mastitis is to take preventive measures such as regular cleaning of the floor, keeping the udder clean, milkman's cleanliness, and dry cow therapy especially in high yielding dairy cows.

Weekly excretion of the mammalian lignan enterolactone in milk of dairy cows fed flaxseed meal

2009 ◽  
Vol 76 (4) ◽  
pp. 455-458 ◽  
Author(s):  
Nathalie Gagnon ◽  
Cristiano Côrtes ◽  
Hélène V Petit
Keyword(s):  
Mammary Gland ◽  
Dairy Cows ◽  
Baseline Level ◽  
Significant Interaction ◽  
Control Diet ◽  
Secoisolariciresinol Diglucoside ◽  
Milk Samples ◽  
Flaxseed Meal ◽  
Ruminal Microbiota ◽  
Feeding Regimen

Flaxseed meal (FM) is rich in the plant lignan secoisolariciresinol diglucoside (SDG) which is converted to the mammalian lignans enterodiol and enterolactone (EL) by ruminal microbiota. Feeding FM to dairy cows increases linearly EL concentration in milk but enterodiol is not detected. The objectives of the study were to determine the length of time to obtain peak EL concentration in the milk of dairy cows fed 20% FM and the length of time to return to EL baseline level in milk when cows are switched from high to low intake of flax SDG. A total of 12 multiparous lactating Holstein cows were assigned randomly to one of two feeding regimens: the control (CO) diet was fed for 6 weeks or the FM diet was fed from week 0 to 3 inclusive and then cows were switched to the control diet from week 3 to 6 inclusive. Milk samples were taken weekly for EL analysis. There was a significant interaction between feeding regimen and week for milk concentration of EL as a result of higher concentration of EL from week 1 to 3 for cows on the FM regimen compared with those on the CO regimen. Concentrations of milk EL on the FM regimen maintained uniform high levels from week 1 to 3 and they decreased significantly from week 3 to 4 when the CO diet was reintroduced in week 3. This study suggests that the conversion of SDG to the mammalian lignan EL and the transfer of EL to the mammary gland are well established after one week of feeding 20% FM in the diet of dairy cows and that milk concentration of EL returns to baseline level after one week of FM deprivation.

Withdrawal of cefoperazone with milk after intramammary administration in dairy cows – prospective and retrospective analysis

2017 ◽  
Vol 20 (2) ◽  
pp. 261-268
Author(s):  
A. Burmańczuk ◽  
T. Grabowski ◽  
T. Błądek ◽  
C. Kowalski ◽  
P. Dębiak
Keyword(s):  
Dairy Cows ◽  
Half Life ◽  
Drug Distribution ◽  
Compartment Model ◽  
Clinical Mastitis ◽  
Pharmacokinetic Analysis ◽  
Pharmacokinetic Parameters ◽  
Lactation Period ◽  
Milk Samples ◽  
Drug Concentrations

Abstract The aim of the study was to carry out retrospective and prospective comparative analyses of the pharmacokinetics of CEF after single intramammary (IMM) administration in cows. The prospective study (study A) was conducted on 9 dairy cows of the Polish Black-White race with clinical mastitis during the lactation period. Milk samples were collected at 2, 4, 6, 8, 10, 24, 36, 48, 72 and 84 h after single IMM administration of 250 mg of CEF to one quarter. Drug concentrations in milk samples were determined by HPLC-MS/MS technique and the results of the pharmacokinetic analysis were compared to those obtained in previous studies based on the microbiological (study B) and HPLC-UV methods (study C and D). Pharmacokinetic parameters were calculated based on adapted two-compartment model of drug distribution. One of the findings of the comparison of the analysed investigations is that the CEF kinetics determined with the microbiological method is consistent with the results obtained by the authors of this paper. Both studies yielded similar results of the key pharmacokinetic parameters related to the level of the drug distribution to tissues and elimination half-life. In the pharmacodynamic analysis, the observations in all four studies were entirely consistent and have shown lower values of T>MIC90 in healthy animals and significantly higher values in infected dairy cows. The comparison of studies A, B, C, and D revealed that the time of complete CEF wash-out of 90.90% varied and amounted to 5.7, 8.0, 2.2, and 2.2 days after administration of the drug, respectively. It was confirmed that not only the type of the analytical method but also correct sampling have a significant impact on determination of the correct value of the drug half-life after IMM administration. The comparative analysis of studies in which the milk yield was high and low allows a conclusion that this parameter in the case of CEF has no significant effect on T>MIC90.

scholarly journals Metagenomic deep sequencing reveals association of microbiome signature with functional biases in bovine mastitis

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
M. Nazmul Hoque ◽  
Arif Istiaq ◽  
Rebecca A. Clement ◽  
Munawar Sultana ◽  
Keith A. Crandall ◽  
...  
Keyword(s):  
Bacterial Colonization ◽  
Bovine Mastitis ◽  
Heavy Metal Resistance ◽  
Clinical Mastitis ◽  
Metal Resistance ◽  
Bacterial Strains ◽  
Viral Genomes ◽  
Milk Samples ◽  
Microbiome Diversity ◽  
Metagenome Sequencing

Abstract Milk microbiomes significantly influence the pathophysiology of bovine mastitis. To assess the association between microbiome diversity and bovine mastitis, we compared the microbiome of clinical mastitis (CM, n = 14) and healthy (H, n = 7) milk samples through deep whole metagenome sequencing (WMS). A total of 483.38 million reads generated from both metagenomes were analyzed through PathoScope (PS) and MG-RAST (MR), and mapped to 380 bacterial, 56 archaeal, and 39 viral genomes. We observed distinct shifts and differences in abundance between the microbiome of CM and H milk in phyla Proteobacteria, Bacteroidetes, Firmicutes and Actinobacteria with an inclusion of 68.04% previously unreported and/or opportunistic strains in CM milk. PS identified 363 and 146 bacterial strains in CM and H milk samples respectively, and MR detected 356 and 251 bacterial genera respectively. Of the identified taxa, 29.51% of strains and 63.80% of genera were shared between both metagenomes. Additionally, 14 archaeal and 14 viral genera were found to be solely associated with CM. Functional annotation of metagenomic sequences identified several metabolic pathways related to bacterial colonization, proliferation, chemotaxis and invasion, immune-diseases, oxidative stress, regulation and cell signaling, phage and prophases, antibiotic and heavy metal resistance that might be associated with CM. Our WMS study provides conclusive data on milk microbiome diversity associated with bovine CM and its role in udder health.

Coagulase-negative staphylococci isolated from bovine extramammary sites and intramammary infections in a single dairy herd

2008 ◽  
Vol 75 (4) ◽  
pp. 422-429 ◽  
Author(s):  
Suvi Taponen ◽  
Johanna Björkroth ◽  
Satu Pyörälä
Keyword(s):  
Bovine Mastitis ◽  
Dairy Herd ◽  
Common Species ◽  
Clinical Mastitis ◽  
23S Rrna ◽  
Coagulase Negative Staphylococci ◽  
Intramammary Infections ◽  
Milk Samples ◽  
Lactating Dairy Cows ◽  
The University

Isolates of various species of coagulase-negative staphylococci (CNS) from extramammary swab samples were compared with isolates of bovine mastitis CNS species. Swab samples were taken from perineum skin and udder skin, teat apices and teat canals of lactating dairy cows of the research dairy herd of the University of Helsinki in 1999 and 2002. In addition, hands of herd staff and liners of teat cups were sampled for CNS. CNS isolates from milk samples of subclinical or clinical mastitis in the same herd were collected during 1998–2002. Species identification was performed using phenotyping (API Staph ID 32 test) and by constructing a 16 and 23S rRNA RFLP library (ribotyping). Based on phenotype, 84% of mastitis isolates and 57% of extramammary isolates were identified at species level with >90% probability. Ribotype patterns formed 24 clusters, and 15 of them included a CNS type strain. If the ribotype clusters contained isolates of both extramammary and mastitis origin, they were further typed using pulsed-field gel electrophoresis (PFGE). The predominant CNS species in mastitis, based both on phenotyping and genotyping, wereStaph. chromogenesandStaph. simulans. Phenotyping failed to identify half of the extramammary isolates. Based on phenotyping,Staph. equorumandStaph. sciuri, and based on ribotyping,Staph. succinusandStaph. xylosus, were the predominant CNS species in extramammary samples. The most common species in milk samples,Staph. chromogenes, was also isolated from several extramammary samples, and five out of ten pulsotypes were shared between mastitis and extramammary isolates, indicating that strains from udder skin are highly similar. The second commonest mastitis species,Staph. simulans, was isolated only from three extramammary samples, indicating thatStaph. simulansmay be more specifically associated with mastitis. Consequently, the origin of CNS mastitis may vary depending on the causing CNS species.

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