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https://www.readbyqxmd.com/read/29781674/proactive-udder-health-management-in-south-africa-and-monitoring-of-antibiotic-resistance-of-staphylococcus-aureus-in-dairy-herds-from-2001-to-2010
#1
Joanne Karzis, Inge-Marie Petzer, Edward F Donkin, Vinny Naidoo
Antibiotic resistance of strains of Staphylococcus aureus isolated from bovine milk is of concern internationally. The objective of this study was to investigate trends of resistance of S. aureus to antibiotics administered to dairy cows in 19 South African and one Zambian dairy herds (participating in the South African proactive udder health management programme) and to identify possible contributing factors. The resistance of S. aureus strains to eight commonly used antibiotics in South Africa from 2001 to 2010 was evaluated...
May 7, 2018: Journal of the South African Veterinary Association
https://www.readbyqxmd.com/read/29780038/is-bovine-protothecal-mastitis-related-to-persistent-infection-in-intestine
#2
Tomomi Kurumisawa, Rui Kano, Yuta Nakamura, Maki Hibana, Takaaki Ito, Hiroshi Kamata, Kazuyuki Suzuki
Prototheca zopfii is associated with bovine mastitis, which causes a reduction in milk production and secretion of thin, watery milk with white flakes. However, the source of infection and an infection route of mastitis have not been clarified. In this study, we evaluated the prevalence of P. zopfii genotype 2 in fecal samples from Japanese dairies with or without a history of protothecal mastitis in 2017. P. zopfii genotype 2 was detected in 23 of 60 (38%) fecal samples in only the herd with a history of protothecal mastitis...
May 18, 2018: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29778482/randomized-noninferiority-field-trial-evaluating-cephapirin-sodium-for-treatment-of-nonsevere-clinical-mastitis
#3
T Tomazi, T A F Lopes, V Masson, J M Swinkels, M V Santos
The general objective of this study was to evaluate whether cephapirin sodium is noninferior compared with a positive control broad-spectrum product formulated with a combination of antimicrobials for intramammary treatment of nonsevere clinical mastitis. In addition, we compared the efficacy of treatments on the cure risks of pathogen groups (gram-positive, gram-negative, and cultures with no growth) based on culture results. A total of 346 cows distributed in 31 commercial dairy herds were selected to participate in the study, although only 236 met the criteria for evaluation of microbiological cure...
May 16, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29778474/a-longitudinal-observational-study-of-the-dynamics-of-mycoplasma-bovis-antibodies-in-naturally-exposed-and-diseased-dairy-cows
#4
Mette B Petersen, Jeanette Pedersen, Dinah L Holm, Matthew Denwood, Liza R Nielsen
Mycoplasma bovis is an important pathogen causing disease and substantial economic losses in cattle. However, knowledge of the dynamics of antibody responses in individual cows in the face of an outbreak is currently extremely limited. The use of commercial antibody tests to support clinical decision-making and for surveillance purposes is therefore challenging. Our objective was to describe the dynamics of M. bovis antibody responses in 4 Danish dairy herds experiencing an acute outbreak of M. bovis-associated disease, and to compare the antibody dynamics between dairy cows with different disease manifestations...
May 16, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29778468/herd-level-associations-between-human-animal-relationship-management-fecal-cortisol-metabolites-and-udder-health-of-organic-dairy-cows
#5
S Ivemeyer, C Simantke, A Ebinghaus, P H Poulsen, J T Sorensen, T Rousing, R Palme, U Knierim
Impact patterns of human-animal relationship (HAR) and herd stress level on udder health were investigated in a cross-sectional study on 30 German and Danish organic dairy herds also taking into account influencing factors regarding housing and management. Cow behavior (avoidance distance, tolerance to tactile interaction, release behavior) was assessed in tests, milkers' behavior recorded during milking, and information about contacts with animals during routine work gathered by interview. Additionally, stockpersons' attitudes were recorded via questionnaires...
May 16, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29778192/genomic-characterization-of-coagulase-negative-staphylococci-including-methicillin-resistant-staphylococcus-sciuri-causing-bovine-mastitis
#6
Manouchehr Khazandi, Abd Al-Bar Al-Farha, Geoffrey W Coombs, Mark O'Dea, Stanley Pang, Darren J Trott, Ricardo R Aviles, Farhid Hemmatzadeh, Henrietta Venter, Abiodun D Ogunniyi, Andrew Hoare, Sam Abraham, Kiro R Petrovski
Methicillin-resistant coagulase-negative staphylococci (MRCoNS) have recently emerged as a significant cause of bovine mastitis worldwide. Here we describe the isolation of MRCoNS from cases of bovine mastitis from a single dairy farm in Australia. Fourteen CoNS isolates were identified as MRCoNS on the basis of having an oxacillin MIC of ≥0.5 μg/mL. The isolates were speciated as S. chromogenes (n = 1) S. fleurettii (n = 1), S. haemolyticus (n = 2), S. sciuri (n = 5), S. simulans (n = 1) S...
June 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29774320/scoring-idiopathic-granulomatous-mastitis-an-effective-system-for-predicting-recurrence
#7
Tonguç Utku Yılmaz, Bora Gürel, Sertaç Ata Güler, Mehmet Ali Baran, Büşra Erşan, Seda Duman, Zafer Utkan
Objective: Idiopathic granulomatous mastitis is a breast disease without a definitive etiology. There are no definitive classifications, scoring systems or certitudes. The aim of this study is to define the factors related to the recurrence and design a scoring system. Material and Methods: Patients who were admitted to the general surgery department with symptoms of granulomatous mastitis were evaluated by ultrasonography and underwent antibiotic therapy. Granulomatous mastitis is diagnosed by core biopsy and treated with steroid therapy...
April 2018: European Journal of Breast Health
https://www.readbyqxmd.com/read/29767780/medical-phycology-2017
#8
John R Todd, Tadahiko Matsumoto, Ryohei Ueno, Jayaseelan Murugaiyan, Allan Britten, John W King, Yoshinobu Odaka, Arnold Oberle, Christoph Weise, Uwe Roesler, R Scott Pore
In 2014, ISHAM formed a new working group: "Medical Phycology: Protothecosis and Chlorellosis." The purpose of this working group is to help facilitate collaboration and communication among people interested in the pathogenic algae, to share ideas and work together. Here we present reports on recent work we have done in five areas. 1. The history of medical phycology as a branch of science. 2. Aspects of the genetics of Prototheca. 3. Aspects of the proteins of Prototheca. 4. Human infections caused by Prototheca...
May 15, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29766599/randomized-clinical-trial-to-evaluate-the-effectiveness-of-enrofloxacin-as-a-second-line-antibiotic-for-treatment-of-acute-escherichia-coli-mastitis
#9
Yasunori Shinozuka, Kazuhiro Kawai, Akira Takeda, Michiaki Yamada, Fumi Kayasaki, Nao Kondo, Yoshiko Sasaki, Nahoko Kanai, Takuma Mukai, Naoki Sawaguchi, Masaya Higuchi, Haruka Kondo, Kouki Sugimoto, Akane Yasuda, Aiko Watanabe
The objective of the present study was to evaluate the effectiveness of enrofloxacin (ERFX) as a second-line antibiotic for treatment of acute Escherichia coli (E. coli) mastitis. Forty-two cows with naturally occurring acute E. coli mastitis were enrolled. On the first day of treatment (day 0), empirically selected antibiotics (oxytetracycline: n = 32, kanamycin: n = 10) were administered. Although systemic signs improved in 10 cows (first-line group), the signs remained unchanged or worsened in 32 cows on day 1, including two cows that were found dead...
May 16, 2018: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/29762488/high-production-of-lukmf-in-staphylococcus-aureus-field-strains-is-associated-with-clinical-bovine-mastitis
#10
Jurriaan Hoekstra, Victor Rutten, Laura Sommeling, Tine van Werven, Mirlin Spaninks, Birgitta Duim, Lindert Benedictus, Gerrit Koop
Staphylococcus aureus , a major cause of bovine mastitis, produces a wide range of immune-evasion molecules. The bi-component leukocidin LukMF' is a potent killer of bovine neutrophils in vitro. Since the role of LukMF' in development of bovine mastitis has not been studied in natural infections, we aimed to clarify whether presence of the lukM-lukF' genes and production levels of LukMF' are associated with clinical severity of the disease. Staphylococcus aureus was isolated from mastitis milk samples (38 clinical and 17 subclinical cases) from 33 different farms...
May 15, 2018: Toxins
https://www.readbyqxmd.com/read/29757354/a-modified-inverted-nipple-correction-technique-that-preserves-breastfeeding
#11
Rui Feng, Weiwei Li, Bing Yu, Yudan Zhou
Background: An inverted nipple may affect the appearance of the breasts and breastfeeding, but traditional surgical procedures might injure the normal lactiferous ducts and damage sensory functions. Objectives: The aim of the study was to propose a minimally invasive and reliable method that preserves breastfeeding and corrects Grade I and II inverted nipples. Methods: This was a randomized controlled trial of 230 female patients with unilateral or bilateral inverted nipples and 30 patients with normal nipples who visited the Preconception Counseling Department of our hospital from February 2009 to January 2016...
May 11, 2018: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29757079/epidemiology-antimicrobial-resistance-and-extended-spectrum-beta-lactamase-producing-enterobacteriaceae-in-clinical-bovine-mastitis-in-tunisia
#12
Mariem Saidani, Lilia Messadi, Alya Soudani, Monia Daaloul-Jedidi, Pierre Châtre, Faten Ben Chehida, Aymen Mamlouk, Wassim Mahjoub, Jean-Yves Madec, Marisa Haenni
Bovine mastitis is a major disease in dairy cattle that causes high economic losses annually. Staphylococci, streptococci, and coliforms are among the major pathogens responsible for such infections. While data on bovine mastitis are numerous in Europe where the efficacy of farm management was monitored, those are scarce in African countries. In this study, we reported the occurrence of Escherichia coli (118/372, 31.7%) and Klebsiella pneumoniae (77/372, 20.7%), two environmental pathogens known to cause bovine mastitis...
May 14, 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29756114/is-erythema-nodosum-coexisting-with-lesions-of-the-breast-a-suggestive-sign-for-idiopathic-granulomatous-mastitis
#13
Metehan Gümüş, Zeynep Meltem Akkurt, Hatice Gümüş
Coexistence of idiopathic granulomatous mastitis and erythema nodosum is very unusual. In this paper, we present a patient with idiopathic granulomatous mastitis accompanied by erythema nodosum to highlight the diagnostic importance of erythema nodosum and its relationship with treatment response of breast lesion. A 39-year-old female with a breast lesion and erythema nodosum was started on treatment with corticosteroids before the results of her histopathological evaluation were obtained. The response to treatment was very quick...
2018: Turkish Journal of Surgery
https://www.readbyqxmd.com/read/29755726/-trueperella-pyogenes-and-brucella-abortus-coinfection-in-a-dog-and-a-cat-on-a-dairy-farm-in-egypt-with-recurrent-cases-of-mastitis-and-abortion
#14
Gamal Wareth, Mohamed El-Diasty, Falk Melzer, Jayaseelan Murugaiyan, Amir Abdulmawjood, Lisa D Sprague, Heinrich Neubauer
Trueperella pyogenes was isolated from a dog and a cat with a mixed infection with Brucella abortus . Both lived on a dairy cattle farm with a history of regular cases of abortion and mastitis. Identification of the bacteria was done by means of MALDI-TOF MS, loop-mediated isothermal amplification (LAMP) based on cpn 60, partial 16S rRNA sequencing, and growth on Loeffler Serum Medium. Isolation of Trueperella pyogenes on the dairy farm highlights its neglected role in reproduction failure and draws attention to its effects in the dairy industry in Egypt...
2018: Veterinary Medicine International
https://www.readbyqxmd.com/read/29755506/genome-wide-association-study-for-susceptibility-to-and-recoverability-from-mastitis-in-danish-holstein-cows
#15
B G Welderufael, Peter Løvendahl, Dirk-Jan de Koning, Lucas L G Janss, W F Fikse
Because mastitis is very frequent and unavoidable, adding recovery information into the analysis for genetic evaluation of mastitis is of great interest from economical and animal welfare point of view. Here we have performed genome-wide association studies (GWAS) to identify associated single nucleotide polymorphisms (SNPs) and investigate the genetic background not only for susceptibility to - but also for recoverability from mastitis. Somatic cell count records from 993 Danish Holstein cows genotyped for a total of 39378 autosomal SNP markers were used for the association analysis...
2018: Frontiers in Genetics
https://www.readbyqxmd.com/read/29753489/short-communication-drying-off-practices-and-use-of-dry-cow-therapy-in-finnish-dairy-herds
#16
M J Vilar, M Hovinen, H Simojoki, P J Rajala-Schultz
The objective of this study was to survey drying-off practices and use of dry cow therapy (DCT) in Finland through an online questionnaire. The questionnaire was accessible to all dairy farmers of the Finnish dairy herd recording system in 2016 (approximately 5,400 farms). In total, 715 dairy producers across the country, representative of the Finnish dairy industry, participated in the survey. Cows were dried off gradually in most of the farms. Most farms (78%) reported using selective DCT, whereas 9% of farms did not use any DCT, and 13% of farms applied blanket DCT...
May 9, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29753483/sanitation-of-staphylococcus-aureus-genotype-b-positive-dairy-herds-a-field-study
#17
C Sartori, R Boss, M Bodmer, A Leuenberger, I Ivanovic, H U Graber
Staphylococcus aureus is one of the most widespread mastitis pathogens infecting dairy cattle worldwide. In Switzerland, different bovine genotypes of Staph. aureus have been identified, and genotype B (GTB) was demonstrated to be a highly contagious subtype, causing herd problems in cattle. As the efficacy of antibiotic therapy against Staph. aureus is not satisfactory, the most promising strategy for controlling this udder pathogen is the implementation of specific sanitation programs for affected farms. The aim of the present longitudinal study was the field evaluation of 2 analytical approaches for the sanitation of Staph...
May 9, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29753482/performance-of-holstein-and-swedish-red-%C3%A3-jersey-holstein-crossbred-dairy-cows-within-low-and-medium-concentrate-grassland-based-systems
#18
C P Ferris, P J Purcell, A W Gordon, T Larsen, M Vestergaard
This 2 × 2 factorial design experiment was conducted to compare the performance of spring-calving Holstein dairy cows (HOL, n = 34) with Swedish Red × Jersey/Holstein crossbred (SR × J/HOL, n = 34) dairy cows within low and medium concentrate input grassland-based dairy systems. The experiment commenced when cows calved and encompassed 1 full lactation. Cows were offered diets containing grass silage and concentrates [70:30 dry matter (DM) ratio, and 40:60 DM ratio, for low and medium, respectively] until turnout, grazed grass plus either 1...
May 9, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29753474/intramammary-25-hydroxyvitamin-d-3-treatment-modulates-innate-immune-responses-to-endotoxin-induced-mastitis
#19
Kathryn E Merriman, Jessi L Powell, Jose E P Santos, Corwin D Nelson
Vitamin D signaling in response to pathogen-associated molecules contributes to activation of innate immune responses of bovine monocytes. We hypothesized that lipopolysaccharide (LPS) of bacteria associated with mastitis in dairy cows activates the vitamin D pathway in innate immune cells of the udder and that increasing availability of 25-hydroxyvitamin D3 [25(OH)D3 ] would augment expression of vitamin D-associated genes. The objective of this experiment was to determine the effects of intramammary LPS and 25(OH)D3 treatments on activation of the vitamin D pathway and innate immune responses of mammary immune cells...
May 9, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29751177/activation-of-the-il-6-jak2-stat3-pathway-induces-plasma-cell-mastitis-in-mice
#20
Yang Liu, Jian Zhang, Yu-Hui Zhou, Hui-Min Zhang, Ke Wang, Yu Ren, Yi-Na Jiang, Shui-Ping Han, Jian-Jun He, Xiao-Jiang Tang
Plasma cell mastitis (PCM) is a chronic mastitis with limited treatment options and common recurrence. A histopathological hallmark of PCM is the infiltration of numerous plasma cells surrounding the mammary duct. Our previous study showed that the activity of the IL-6/STAT3 signaling pathway was elevated in patients with PCM. However, the etiology of PCM remains largely unclear. In this study, we sought to explore the effects of IL-6/JAK2/STAT3 signaling pathway in the pathogenesis of PCM. Histological analysis showed that the mammary glands of mice that received human breast tissue homogenates, followed by an injection of IL-6, exhibited features of PCM similar to human PCM...
May 8, 2018: Cytokine
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