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https://www.readbyqxmd.com/read/28815847/mastitis-treatment-reduction-in-antibiotic-usage-in-dairy-cows
#1
REVIEW
V Krömker, S Leimbach
Animal-friendly, economical, resource-saving milk production provides the basis for sustained consumer acceptance. Bovine mastitis plays a decisive role in the dairy industry-disturbing animal health and welfare and causing considerable economic losses on the other hand. Currently, antimicrobial treatment is indispensable to keep bovine udder health, animal welfare and economic aspects in balance. On the contrary, emergence and spread of antimicrobial resistance (AMR) is an urgent matter of particular public interest, and as a consequence, antimicrobial usage (AMU) in production livestock is a critically discussed subject...
August 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28808353/milk-microbiome-and-bacterial-load-following-dry-cow-therapy-without-antibiotics-in-dairy-cows-with-healthy-mammary-gland
#2
Erika C R Bonsaglia, Marilia S Gomes, Igor F Canisso, Ziyao Zhou, Svetlana F Lima, Vera L M Rall, Georgios Oikonomou, Rodrigo C Bicalho, Fabio S Lima
Preventive infusion of antibiotics in the mammary gland of cows consumes 11 tons/year of medically relevant antimicrobials, yet, this practice might not be critical to prevent new infections in the healthy mammary gland of cows. Here, we used next-generation sequencing and quantitative real-time PCR to determine the impact of dry cow therapy without antibiotics on milk microbiome and bacterial load, respectively. Cows diagnosed as negative for mastitis at dry off were randomly allocated to receive antibiotic (intramammary ceftiofur hydrochloride) and teat sealant or just teat sealant...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28807478/role-of-lipid-mediators-in-the-regulation-of-oxidative-stress-and-inflammatory-responses-in-dairy-cattle
#3
REVIEW
Vengai Mavangira, Lorraine M Sordillo
Periparturient dairy cows experience an increased incidence and severity of several inflammatory-based diseases such as mastitis and metritis. Factors associated with the physiological adaptation to the onset of lactation can impact the efficiency of the inflammatory response at a time when it is most needed to eliminate infectious pathogens that cause these economically important diseases. Oxidative stress, for example, occurs when there is an imbalance between the production of oxygen radicals during periods of high metabolic demand and the reduced capabilities of the host's antioxidant defenses...
August 2, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28803018/short-communication-molecular-characteristics-antimicrobial-susceptibility-and-pathogenicity-of-clinical-nocardia-cyriacigeorgica-isolates-from-an-outbreak-of-bovine-mastitis
#4
Wei Chen, Yongxia Liu, Herman W Barkema, Jian Gao, Jeroen De Buck, John P Kastelic, Gang Liu, Tariq Ali, Muhammad Shahid, Bo Han
The occurrence of nocardial mastitis, mostly in the context of outbreaks, has been reported in many countries. However, there is a paucity of reports regarding detailed characterization of Nocardia cyriacigeorgica from bovine mastitis. Thus, herein we report characteristics, antimicrobial susceptibility patterns, molecular identification, and pathogenicity of N. cyriacigeorgica isolated from an outbreak of clinical mastitis in a dairy herd in northern China. A total of 182 (80.2%) lactating cows had clinical mastitis with severe inflammation and firmness of the udder, reduced milk production, and anorexia, with no apparent clinical response to common antibiotics...
August 9, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28798952/prevalence-of-subclinical-mastitis-and-distribution-of-pathogens-in-dairy-farms-of-rubavu-and-nyabihu-districts-rwanda
#5
J P Mpatswenumugabo, L C Bebora, G C Gitao, V A Mobegi, B Iraguha, O Kamana, B Shumbusho
A cross-sectional study was conducted from May 2016 to January 2017 in Rubavu and Nyabihu districts, Western Rwanda, aiming at estimating the prevalence of subclinical mastitis (SCM) and identifying its causative bacteria. Management practices and milking procedures were recorded through a questionnaire. 123 crossbreed milking cows from 13 dairy farms were randomly selected and screened for SCM using California Mastitis Test (CMT). Composite CMT positive milk samples were processed for bacterial isolation and identification...
2017: Journal of veterinary medicine
https://www.readbyqxmd.com/read/28780088/evidence-that-mastitis-can-cause-pregnancy-loss-in-dairy-cows-a-systematic-review-of-observational-studies
#6
Mohammad O Dahl, Fiona P Maunsell, Albert De Vries, Klibs N Galvao, Carlos A Risco, Jorge A Hernandez
The objective of this study was to conduct a systematic review to identify and assess evidence and knowledge gaps in published observational studies that have investigated the relationship between mastitis and pregnancy loss (PL) in dairy cows. PubMed and ScienceDirect were used to search pertinent peer-reviewed research reports of interest. Screening of research reports was conducted at 3 levels: titles, abstracts, and full-text articles. The search identified 651 records for initial screening. The final screening process identified 8 qualified articles for review after removing 10 duplicate records, 582 titles, 31 abstracts, and 20 full-text articles...
August 2, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28757033/commensal-coagulase-negative-staphylococcus-from-the-udder-of-healthy-cows-inhibits-biofilm-formation-of-mastitis-related-pathogens
#7
Paula Isaac, Luciana Paola Bohl, María Laura Breser, María Soledad Orellano, Agustín Conesa, Marcela Alejandra Ferrero, Carina Porporatto
Bovine mastitis, considered the most important cause of economic losses in the dairy industry, is a major concern in veterinary medicine. Staphylococcus aureus and coagulase-negative staphylococci (CNS) are the main pathogens associated with intramammary infections, and bacterial biofilms are suspected to be responsible for the persistence of this disease. CNS from the udder are not necessarily associated with intramammary infections. In fact, some commensal CNS have been shown to have biological activities...
August 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28757019/genomic-comparison-of-virulent-and-non-virulent-serotype-v-st1-streptococcus-agalactiae-in-fish
#8
Rui Wang, Li-Ping Li, Ting Huang, Ai-Ying Lei, Yan Huang, Fu-Guang Luo, Dong-Ying Wang, Wei-Yi Huang, Ming Chen, Jun Huang
Streptococcus agalactiae or Group B Streptococcus (GBS) is the major pathogen causing pneumonia and meningitis in human, mastitis in dairy cows, and streptococcal disease in tilapia. Previous studies have shown that fish GBS strains are correlated with human GBS strains in evolution and might have cross-host infection ability. Although the invasive disease caused by ST1 GBS in non-pregnant adults and cows is increasing worldwide, infection of fish by ST1 GBS has not been reported. The aim of this study was to determine whether ST1 GBS was virulent in fish and to investigate the genomic characteristics of ST1 GBS strains with different pathogenicity in tilapia...
August 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28756809/first-report-in-china-on-the-identification-and-drug-sensitivity-of-mycobacterium-elephantis-isolated-from-the-milk-of-a-cow-with-mastitis
#9
Ling Yun Ji, Dong Lei Xu, Shu Peng Yin, Hai Can Liu, Gui Lian Li, Yi Jiang, Jian Hao Wei, Hao Zeng, Yong Liang Lou, Jian Xin Lyu, Kang Lin Wan
OBJECTIVE: In this study, milk from a cow with mastitis was analyzed to determine the presence of mycobacterial infection. Milk quality and security problems pertaining to the safe consumption of dairy products were also discussed in this study. METHODS: Milk was preprocessed with 4% NaOH. Then, mycobacteria were isolated from the milk sample on L-J medium. The isolate was identified using multiple loci Polymerase Chain Reaction (PCR) and multi-locus sequence analysis with 16S rRNA, sodA, hsp65, and ITS genes...
July 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28755947/invited-review-a-systematic-review-and-qualitative-analysis-of-treatments-other-than-conventional-antimicrobials-for-clinical-mastitis-in-dairy-cows
#10
D Francoz, V Wellemans, J P Dupré, H J Karreman, J P Roy, F Labelle, P Lacasse, S Dufour
Clinical mastitis is an important disease in dairies. Its treatment is mainly based on the use of antimicrobial drugs. Numerous non-antimicrobial drugs and treatment strategies have already been reported for clinical mastitis treatment, but data on their efficacy have never been collated in a systematic way. The objective of this systematic review was to identify treatments other than conventional antimicrobials for the treatment of clinical mastitis in lactating dairy cows. A systematic review was performed with studies written in English or French selected from CAB Abstracts, PubMed, and Web of Science from January 1970 to June 2014...
July 26, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28755940/behavioral-and-patho-physiological-response-as-possible-signs-of-pain-in-dairy-cows-during-escherichia-coli-mastitis-a-pilot-study
#11
Alice de Boyer des Roches, Marion Faure, Alexandra Lussert, Vincent Herry, Pascal Rainard, Denys Durand, Gilles Foucras
Bovine mastitis is one of the most common diseases in the dairy industry and it is a major welfare problem. Pain during mastitis is generally assessed through behavior but a combination of indicators would increase the chances of detecting pain and assessing its intensity. The aim of this study was to assess behavioral and patho-physiological responses as possible signs of pain experienced by cows after experimental intramammary challenge (mastitis) with Escherichia coli. Six Holstein-Friesian cows received an inoculation of E...
July 26, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28755927/short-communication-repeated-mammary-tissue-collections-during-lactation-do-not-alter-subsequent-milk-yield-or-composition
#12
X Weng, A P A Monteiro, J Guo, B M S Ahmed, J K Bernard, D J Tomlinson, J M DeFrain, G E Dahl, S Tao
Mammary biopsy collection (MB) is a valuable approach for studying mammary gland biology, but it is unclear if repeated MB impair the performance of lactating dairy cows. The objective of this trial was to examine the effect of repeated MB during lactation on udder health, dry matter intake (DMI), and lactation performance of lactating dairy cows. Sixty-four multiparous, mid-lactation Holstein cows were enrolled in a 29-wk trial, and 32 cows were randomly selected for repeated MB. The MB and non-MB (NMB) cows had similar parity (2...
July 26, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28752931/efficacy-assessment-of-an-intramammary-treatment-with-a-new-recrystallized-enrofloxacin-vs-ceftiofur-and-parenteral-enrofloxacin-in-dairy-cows-with-nonsevere-clinical-mastitis
#13
M Viveros, R Lopez-Ordaz, L Gutiérrez, J E Miranda-Calderón, H Sumano
A recrystallized form of enrofloxacin as dehydrate-HCl (enro-C) was assessed for bacteriological and clinical cure efficacies in Holstein-Friesian cows affected of nonsevere clinical mastitis. Treatments were enro-Csusp (n = 81), treated with a pharmaceutical suspension of enro-C/quarter; group enro-Cpd (n = 80) treated as above, but using enro-C powder suspended in water; group CF (n = 65), treated with ceftiofur HCl/quarter; and group enroR (n = 66), treated with standard enrofloxacin solution (5 mg/kg, intramuscular)...
July 28, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28752211/relationship-between-teat-morphological-traits-and-subclinical-mastitis-in-frieswal-dairy-cows
#14
Raj Sukhbir Singh, B K Bansal, D K Gupta
The present study was aimed to investigate the relationship between selected morphological traits of teat and subclinical mastitis (SCM) in Frieswal crossbred dairy cows. A total of 1040 quarters from 261 lactating cows were evaluated for teat shape (bottle/fleshy/collapsed/conical/normal/pencil and short), teat-end shape (dished/flat/funnel/pocketed/pointed and rounded), teat orientation (aligned/misaligned) and teat position (front and rear; left-sided and right-sided). Each udder quarter was screened with California Mastitis Test (CMT) for the purpose of defining quarter health status...
July 27, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28740504/2-4-thiazolidinedione-treatment-improves-the-innate-immune-response-in-dairy-goats-with-induced-subclinical-mastitis
#15
Fernanda Rosa, Johan S Osorio, Erminio Trevisi, Francisco Yanqui-Rivera, Charles T Estill, Massimo Bionaz
Mastitis is a major disease in dairy cows resulting in significant economic losses. In vitro works suggest that ruminants peroxisome proliferator-activated receptor gamma (PPARγ) can aid in improving the response to mastitis and can control milk fat synthesis. The objectives of the present experiment were to test if treatment with the putative PPARγ agonist 2,4-thiazolidinedione (TZD) improves (1) the response to subclinical mastitis and (2) milk fat production. Lactating goats received daily injections of 8 mg/kg BW of TZD or saline for 3 weeks...
2017: PPAR Research
https://www.readbyqxmd.com/read/28732791/detection-of-a-mecc-positive-staphylococcus-saprophyticus-from-bovine-mastitis-in-argentina
#16
Mariela E Srednik, Marie Archambault, Mario Jacques, Elida R Gentilini
INTRODUCTION: Bovine mastitis causes important economic losses in the dairy industry. Coagulase-negative staphylococci (CNS) are a group of bacteria commonly isolated from bovine mastitis and can display resistance to a wide range of antimicrobial agents. OBJECTIVES: The objective of this study was to determine staphylococcal resistance towards β-lactam, macrolide and lincosamide antimicrobials in quarters previously treated with third-generation cephalosporin and after lincosamide intramammary therapy...
July 18, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28731206/comparative-plasma-and-interstitial-fluid-pharmacokinetics-of-flunixin-meglumine-and-ceftiofur-hydrochloride-following-individual-and-co-administration-in-dairy-cows
#17
P J Gorden, M D Kleinhenz, L W Wulf, S J Rajewski, C Wang, R Gehring, J F Coetzee
Ceftiofur (CEF) and flunixin meglumine (FLU) are two drugs approved for use in beef and dairy cattle that are frequently used in combination for many diseases. These two drugs are the most commonly used drugs in dairy cattle in their respective drug classes. Two research groups have recently published manuscripts demonstrating altered pharmacokinetics of FLU and CEF in cows affected with naturally occurring mastitis. The objective of this study was to determine whether pharmacokinetics of flunixin meglumine administered intravenously or intramuscularly administered ceftiofur hydrochloride would be altered when co-administered versus individual administration to healthy dairy cattle...
July 21, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28727781/escherichia-coli-mastitis-strains-in-vitro-phenotypes-and-severity-of-infection-in-vivo
#18
Perrine Roussel, Adeline Porcherie, Maryline Répérant-Ferter, Patricia Cunha, Christophe Gitton, Pascal Rainard, Pierre Germon
Mastitis remains a major infection of dairy cows and an important issue for dairy farmers and the dairy industry, in particular infections due to Escherichia coli strains. So far, properties specific to E. coli causing mastitis remain ill defined. In an attempt to better understand the properties required for E. coli to trigger mastitis, we used a range of in vitro assays to phenotypically characterize four E. coli strains, including the prototypical E. coli mastitis strain P4, possessing different relative abilities to cause mastitis in a mouse model...
2017: PloS One
https://www.readbyqxmd.com/read/28716206/contextual-herd-factors-associated-with-cow-culling-risk-in-qu%C3%A3-bec-dairy-herds-a-multilevel-analysis
#19
Denis Haine, Hector Delgado, Roger Cue, Asheber Sewalem, Kevin Wade, René Lacroix, Daniel Lefebvre, Julie Arsenault, Émile Bouchard, Jocelyn Dubuc
Several health disorders, such as milk fever, displaced abomasum, and mastitis, as well as impaired reproductive performance, are known risk factors for the removal of affected cows from a dairy herd. While cow-level risk factors are well documented in the literature, herd-level associations have been less frequently investigated. The objective of this study was to investigate the effect of cow- and herd-level determinants on variations in culling risk in Québec dairy herds: whether herd influences a cow's culling risk...
September 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28716189/prediction-of-streptococcus-uberis-clinical-mastitis-risk-using-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry-maldi-tof-ms-in-dairy-herds
#20
Simon C Archer, Andrew J Bradley, Selin Cooper, Peers L Davies, Martin J Green
The purpose of this study was to evaluate whether the risk of Streptococcus uberis clinical mastitis at cow level could be predicted from the historical presence of specific strains of S. uberis on dairy farms. Matrix-assisted laser desorption ionization time of flight mass spectrometry was used to identify S. uberis isolates potentially capable of contagious transmission. Data were available from 10,652 cows from 52 English and Welsh dairy farms over a 14 month period, and 521 isolates of S. uberis from clinical mastitis cases were available for analysis...
September 1, 2017: Preventive Veterinary Medicine
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