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Clinical Mastits Incidence In Small-Scale Dairy Cow Farms. MACEDONIAN VETERINARY REVIEW 2023. [DOI: 10.2478/macvetrev-2023-0010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Abstract
The incidence of clinical mastitis (CM) in small and large-scale dairy cow farms can be highly variable and can be affected by age, parity, post-calving status, and atmospheric conditions. The current study aimed to assess the CM-incidence and its association with the post-calving days, number of lactations, season, and number of affected udder quarters in dairy cows in small-scale dairy farms. The study was conducted within one calendar year in 177 small-scale farms with 864 dairy cows. Clinically confirmed CM cows (n=72) were sampled from each udder quarter and processed for bacteriology examination. The CM-positive samples were grouped according to the season (spring, summer, autumn, and winter), the number of days after calving (<90, 90-180, and >180), the number of lactations (1-st, 2-5-th, and >6-th), and the number of affected udder quarters (one, two, three, and four). The CM-positive samples (n=72, 8.3%) were confirmed on bacteriology examination in significantly lower count (n=56, 6.5%). The 2-5-th lactations cows (n=35, 68.6%) were significantly more compared to the first lactation (n=6, 11.8%), and >6-th lactation cows (n=10, 19.6%). CM cows with infection of one udder quarter (n=40, 78.4%) were significantly more than the cows with two (n=6, 11.8%), and four infected quarters (n=5, 9.8%). The CM-incidence in small-scale dairy cow farms in North Macedonia was 8.3% and 6.5% by clinical and bacteriology examination, respectively. The highest CM susceptibility was observed in the cows between the second and fifth lactations. One udder quarter was most frequently affected in CM-positive cases.
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Beaver A, Weary DM, von Keyserlingk MAG. Invited review: The welfare of dairy cattle housed in tiestalls compared to less-restrictive housing types: A systematic review. J Dairy Sci 2021; 104:9383-9417. [PMID: 34253364 DOI: 10.3168/jds.2020-19609] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 05/08/2021] [Indexed: 01/02/2023]
Abstract
Many dairy cattle worldwide are housed in tiestalls, meaning that they are tethered by the neck to individual stalls. On some farms, tied cattle are permitted seasonal access to pasture, but otherwise their movements are restricted compared with cows housed in freestall barns or other loose housing systems. The aim of this systematic review is to summarize the scientific literature pertaining the welfare of tied dairy cattle through comparison with less-restrictive housing systems. Articles identified by PubMed and Web of Science underwent a 5-phase screening process, resulting in the inclusion of 102 papers. These papers addressed measures of welfare related to affective state, natural behavior, and health (with the lattermost category subdivided into hoof and leg disorders, lameness, mastitis, transition disease, and other diseases or conditions). Health was the most researched topic (discussed in 86% of articles); only 19% and 14% of studies addressed natural behavior and affective state, respectively. Our review highlights different health benefits for tethered and loose cattle. For example, tied cattle experience reduced prevalence of white line disease and digital dermatitis, whereas loose cattle experience fewer leg lesions and injuries. The prevalence of mastitis, transition diseases, and other conditions did not differ consistently across housing types. We found that the expression of certain natural behaviors, particularly those associated with lying down (e.g., time spent kneeling, unfulfilled intentions to lie down), were impaired in tiestalls. Articles addressing affective state found benefits to loose housing, but these studies focused almost exclusively on (1) physiological measurements and (2) cow comfort, a concept that lacks a consistent operational definition across studies. We call for future research into the affective state of tied cattle that extends beyond these explorations and employs more sophisticated methodologies.
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Affiliation(s)
- Annabelle Beaver
- Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, 2357 Main Mall, Vancouver, BC, V6T 1Z4 Canada; Department of Animal Production, Welfare and Veterinary Sciences, Harper Adams University, Shropshire, TF10 8NB United Kingdom
| | - Daniel M Weary
- Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, 2357 Main Mall, Vancouver, BC, V6T 1Z4 Canada
| | - Marina A G von Keyserlingk
- Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, 2357 Main Mall, Vancouver, BC, V6T 1Z4 Canada.
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Pugliese M, Biondi V, Passantino A, Licitra F, Alibrandi A, Zanghi A, Conte F, Marino G. Welfare assessment in intensive and semi-intensive dairy cattle management system in Sicily. Anim Sci J 2021; 92:e13546. [PMID: 33763968 DOI: 10.1111/asj.13546] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 12/22/2020] [Accepted: 03/03/2021] [Indexed: 11/26/2022]
Abstract
The present study aimed to compare the welfare of dairy cows kept in two traditional husbandry systems (semi-intensive and intensive farming) in south-eastern Sicily. A total of 18 dairy farms (nine semi-intensive and nine intensive) were evaluated with a multicriteria system adapted for Sicilian conditions and obtained simplifying the model of the European Food Safety Authority (EFSA). Values of welfare measures, collected by inspections of the farms (general well-being indicators, ventilation system, resting areas [cubicles or bedding], flooring, milking parlours and waiting area, manger and watering equipment), and those of health categories (cases of abortions, hypocalcemia, displacement of abomasum, acidosis/ketosis, enteritis, hoof problems, and mastitis) obtained through the farm records, were compared using Mann-Whitney and Chi-squared tests, respectively. Data showed significant differences (p ≤ .05) about the variables related to welfare categories such as housing ventilation system, resting area, manger, and water equipment that were better in the semi-intensive system than the intensive system. No significant differences were observed about the variables related to health indicators. The results demonstrated that in Sicily the semi-intensive farm is better than the intensive to satisfy the conditions of animal welfare.
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Affiliation(s)
- Michela Pugliese
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Vito Biondi
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | | | | | | | - Antonina Zanghi
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Francesca Conte
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Gabriele Marino
- Department of Veterinary Sciences, University of Messina, Messina, Italy
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Bochniarz M, Szczubiał M, Brodzki P, Krakowski L, Dąbrowski R. Serum amyloid A as an marker of cow֨ s mastitis caused by Streptococcus sp. Comp Immunol Microbiol Infect Dis 2020; 72:101498. [PMID: 32505957 DOI: 10.1016/j.cimid.2020.101498] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/19/2020] [Accepted: 05/28/2020] [Indexed: 12/16/2022]
Abstract
The aim of the study was to evaluate the concentrations of amyloid A in serum (SAA) and in milk (MAA) of cows with mastitis caused by Streptococcus agalactiae, Streptococcus dysgalactiae and Streptococcus uberis and healthy cows. The blood and milk samples were obtained from Holstein-Friesian cows with clinical signs of mastitis from two tie-stall housing systems herds in the Lublin region in Poland. A total of 80 milk and serum samples from 30 cows with mastitis and 10 healthy cows were selected for study. In the quarter milk samples from cows with mastitis Streptococcus strains were isolated: Strep. agalactiae (7 cows), Strep. dysgalactiae (9 cows) and Strep. uberis (14 cows). The present study indicates that amyloid A concentration was significantly higher in milk of cows with mastitis compared to control cows (1134.25 ng/mL and 324.50 ng/mL, P < 0.001). The highest concentration of amyloid A was found in milk of cows with mastitis caused by Strep. agalactiae and Strep. uberis whereas lowest in the milk of cows with mastitis caused by Strep. dysgalactiae (3882.50 ng/mL, 2587.75 ng/mL and 812.00 ng/mL, respectively). No statistically significant difference in amyloid A concentration in serum was revealed between all unhealthy cows and control group (2140.00 ng/mL and 2510.00 ng/mL, P > 0.05). There was also no statistically significant difference between the level of amyloid A in serum and in milk of cows with mastitis caused by Strep. agalactiae and Strep. uberis. Whereas, in the case of Strep. dysgalactiae, like in the group of healthy cows, the level of amyloid A was significantly higher in serum compared to this in milk (2100 ng/mL and 812.00 ng/mL, P < 0.001; 2510.00 ng/mL and 324.50 ng/mL, P < 0.001; respectively).
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Affiliation(s)
- Mariola Bochniarz
- Department and Clinic of Animal Reproduction, Faculty of Veterinary Medicine, University of Life Sciences, Gleboka 30, 20-612, Lublin, Poland.
| | - Marek Szczubiał
- Department and Clinic of Animal Reproduction, Faculty of Veterinary Medicine, University of Life Sciences, Gleboka 30, 20-612, Lublin, Poland
| | - Piotr Brodzki
- Department and Clinic of Animal Reproduction, Faculty of Veterinary Medicine, University of Life Sciences, Gleboka 30, 20-612, Lublin, Poland
| | - Leszek Krakowski
- Department and Clinic of Animal Reproduction, Faculty of Veterinary Medicine, University of Life Sciences, Gleboka 30, 20-612, Lublin, Poland
| | - Roman Dąbrowski
- Department and Clinic of Animal Reproduction, Faculty of Veterinary Medicine, University of Life Sciences, Gleboka 30, 20-612, Lublin, Poland
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Hosseinzadeh S, Dastmalchi Saei H. Staphylococcal species associated with bovine mastitis in the North West of Iran: Emerging of coagulase-negative staphylococci. Int J Vet Sci Med 2019. [DOI: 10.1016/j.ijvsm.2014.02.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Somayyeh Hosseinzadeh
- Department of Microbiology, Faculty of Veterinary Medicine, Urmia University, P.O. Box 1177, Urmia, Iran
| | - Habib Dastmalchi Saei
- Department of Microbiology, Faculty of Veterinary Medicine, Urmia University, P.O. Box 1177, Urmia, Iran
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Zhang Z, Li X, Yang F, Luo J, Wang X, Liu L, Li H. Influences of season, parity, lactation, udder area, milk yield, and clinical symptoms on intramammary infection in dairy cows. J Dairy Sci 2016; 99:6484-6493. [DOI: 10.3168/jds.2016-10932] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 04/25/2016] [Indexed: 11/19/2022]
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Mahmmod YS, Klaas IC, Katholm J, Lutton M, Zadoks RN. Molecular epidemiology and strain-specific characteristics of Streptococcus agalactiae at the herd and cow level. J Dairy Sci 2015; 98:6913-24. [PMID: 26233443 DOI: 10.3168/jds.2015-9397] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 06/09/2015] [Indexed: 11/19/2022]
Abstract
Host-adaptation of Streptococcus agalactiae subpopulations has been described whereby strains that are commonly associated with asymptomatic carriage or disease in people differ phenotypically and genotypically from those causing mastitis in dairy cattle. Based on multilocus sequence typing (MLST), the most common strains in dairy herds in Denmark belong to sequence types (ST) that are also frequently found in people. The aim of this study was to describe epidemiological and diagnostic characteristics of such strains in relation to bovine mastitis. Among 1,199 cattle from 6 herds, cow-level prevalence of S. agalactiae was estimated to be 27.4% based on PCR and 7.8% based on bacteriological culture. Quarter-level prevalence was estimated at 2.8% based on bacteriological culture. Per herd, between 2 and 26 isolates were characterized by pulsed-field gel electrophoresis (PFGE) and MLST. Within each herd, a single PFGE type and ST predominated, consistent with a contagious mode of transmission or point source infection within herds. Evidence of within-herd evolution of S. agalactiae was detected with both typing methods, although ST belonged to a single clonal complex (CC) per herd. Detection of CC23 (3 herds) was associated with significantly lower approximate count (colony-forming units) at the quarter level and significantly lower cycle threshold value at the cow level than detection of CC1 (2 herds) or CC19 (1 herd), indicating a lower bacterial load in CC23 infections. Median values for the number of infected quarters and somatic cell count (SCC) were numerically but not significantly lower for cows infected with CC23 than for cows with CC1 or CC19. For all CC, an SCC threshold of 200,000 cells/mL was an unreliable indicator of infection status, and prescreening of animals based on SCC as part of S. agalactiae detection and eradication campaigns should be discouraged.
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Affiliation(s)
- Y S Mahmmod
- Infectious Diseases, Department of Animal Medicine, Faculty of Veterinary Medicine, Zagazig University, Zagazig City 44511, Sharkia Province, Egypt; Department of Large Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, DK-1870 Frederiksberg C, Denmark
| | - I C Klaas
- Department of Large Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, DK-1870 Frederiksberg C, Denmark
| | - J Katholm
- Knowledge Centre for Agriculture, Cattle, Agro Food Park 15, Skejby, DK-8200 Aarhus N, Denmark
| | - M Lutton
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ, United Kingdom
| | - R N Zadoks
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ, United Kingdom; Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G61 1QH, United Kingdom.
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Bansal BK, Gupta DK, Shafi TA, Sharma S. Comparative antibiogram of coagulase-negative Staphylococci (CNS) associated with subclinical and clinical mastitis in dairy cows. Vet World 2015; 8:421-6. [PMID: 27047108 PMCID: PMC4774854 DOI: 10.14202/vetworld.2015.421-426] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Revised: 02/19/2015] [Accepted: 03/01/2015] [Indexed: 11/23/2022] Open
Abstract
Aim: The present study was planned to determine the in vitro antibiotic susceptibility of coagulase-negative Staphylococci (CNS) strains isolated from clinical and subclinical cases of mastitis in dairy cows. Antibiotic sensitivity profile will be helpful to recommend early therapy at the field level prior to availability of CST results. Materials and Methods: The milk samples from cases of clinical mastitis received in Mastitis Laboratory, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana and those of subclinical mastitis collected during routine screening of state dairy farms, were subjected to microbial culture. Identification of CNS organisms was done by standard biochemical tests. Antibiotic sensitivity testing, based on 30 antibiotics belonging to 12 groups, was done on 58 randomly selected CNS isolates (clinical isolates: 41, subclinical isolates: 17). Results: Isolates were highly susceptible to chloramphenicol (98.3%), gentamicin (93.1%), streptomycin (91.4%), linezolid (91.4%), ceftixozime (87.9%), cloxacillin (86.2%), clotrimazole (86.2%), bacitracin (86.2%), enrofloxacin (84.5%) and ceftrioxone + tazobactum (70.7%), while resistance was observed against amoxicillin (77.6%), penicillin (75.9%), ampicillin (74.1%) and cefoperazone (51.7%). Overall, isolates from clinical cases of mastitis had a higher resistance than subclinical isolates. Conclusion: CNS isolates were susceptible to chloramphenicol, gentamicin and streptomycin, while higher resistance was recorded against routinely used penicillin group.
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Affiliation(s)
- B K Bansal
- Department of Veterinary Medicine, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana - 1410 04, Punjab, India
| | - D K Gupta
- Department of Veterinary Medicine, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana - 1410 04, Punjab, India
| | - T A Shafi
- Department of Veterinary Medicine, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana - 1410 04, Punjab, India
| | - S Sharma
- Department of Veterinary Medicine, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana - 1410 04, Punjab, India
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Vitale M, Scatassa ML, Cardamone C, Oliveri G, Piraino C, Alduina R, Napoli C. Staphylococcal food poisoning case and molecular analysis of toxin genes in Staphylococcus aureus strains isolated from food in Sicily, Italy. Foodborne Pathog Dis 2014; 12:21-3. [PMID: 25384106 DOI: 10.1089/fpd.2014.1760] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
A case of staphylococcal food poisoning was observed in two individuals of the same family after consumption of primosale, a semiripened sheep cheese produced in Sicily. Staphylococcus aureus isolated from the cheese produced enterotoxin C (SEC) and carried both the enterotoxin C (sec) and the toxic shock syndrome toxin (tsst-1) gene. Following this case, an extensive survey was conducted on 971 food samples (raw milk, cheese, meat, and food preparations). S. aureus was detected in 102 of 971 food samples, from all types of food with the exception of ricotta cheese. The tsst-1 gene was present in 42% of the strains, either alone or in combination with other toxin genes. The enterotoxin C gene was the most represented enterotoxin, but it was only found in dairy products. Six S. aureus isolates carried the sea gene alone, two isolates carried both sea and seb, and one isolate carried both sea and sec. A significant percentage (46%) of all isolates carried a toxin gene, creating significant concern that virulent S. aureus can be transmitted through food in Sicily.
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Affiliation(s)
- Maria Vitale
- 1 Laboratory of Microorganisms Genetics, Experimental Zooprophylactic Institute of Sicily "Adelmo Mirri," Palermo, Italy
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Garcia-Alvarez L, Dawson S, Cookson B, Hawkey P. Working across the veterinary and human health sectors. J Antimicrob Chemother 2012; 67 Suppl 1:i37-49. [PMID: 22855878 DOI: 10.1093/jac/dks206] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Antibiotics are widely used in human and veterinary medicine for the prevention and treatment of infectious diseases. This practice has led to the emergence of antimicrobial-resistant bacteria in both humans and animals. The potential role that animals, particularly livestock, might play as potential reservoirs of antibiotic resistance genes has been recognized, and it is currently a cause of public health concern. The impact of animal and human antibiotic usage on the emergence and persistence of resistant bacteria and the precise transfer pathways for resistance genes between humans and animals are not currently fully understood. As part of the remit of the UK Advisory Committee on Antimicrobial Resistance and Healthcare-Associated Infection (ARHAI), two main areas were addressed, namely methicillin-resistant Staphylococcus aureus (MRSA) and multidrug-resistant Gram-negative bacteria, where both the human and veterinary health sectors share interests. We review the current knowledge of MRSA and resistant Gram-negative bacteria, and provide guidance on occupational risks for veterinary healthcare workers relating to animals infected or colonized with MRSA. Findings and recommendations for further work across disciplines and future research in multidrug-resistant Gram-negative bacteria are also presented. Working collaboratively across disciplines is essential in order to better understand and challenge an important human and animal health problem: antimicrobial resistance.
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Affiliation(s)
- Laura Garcia-Alvarez
- The National Centre for Infection Prevention and Management, Imperial College, Charing Cross Campus, 3rd Floor, Reynolds Building, London W6 8RP, UK.
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Roy JP, Keefe G. Systematic Review: What is the Best Antibiotic Treatment for Staphylococcus aureus Intramammary Infection of Lactating Cows in North America? Vet Clin North Am Food Anim Pract 2012; 28:39-50, viii. [DOI: 10.1016/j.cvfa.2011.12.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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DeVries T, Deming J, Rodenburg J, Seguin G, Leslie K, Barkema H. Association of standing and lying behavior patterns and incidence of intramammary infection in dairy cows milked with an automatic milking system. J Dairy Sci 2011; 94:3845-55. [DOI: 10.3168/jds.2010-4032] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Accepted: 04/27/2011] [Indexed: 11/19/2022]
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Nam H, Kim J, Lim S, Jang K, Jung S. Infectious aetiologies of mastitis on Korean dairy farms during 2008. Res Vet Sci 2010; 88:372-4. [DOI: 10.1016/j.rvsc.2009.12.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2009] [Revised: 11/24/2009] [Accepted: 12/10/2009] [Indexed: 10/20/2022]
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Bishop H, Erkelens J, Van Winden S. Predictors for successful bacteriological culture from milk samples. Vet Rec 2010; 166:322-4. [PMID: 20228365 DOI: 10.1136/vr.b4789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
A total of 757 milk samples were taken from 57 farms throughout Wales as part of a mastitis investigation. Problem cows were selected using the most recent milk recording or, if these data were unavailable, the whole herd was assessed using the California mastitis test (CMT) and scored on a scale of 0 to 3. The affected quarter was identified using CMT. The results of the bacteriology were grouped into negative and positive culture. All contaminated samples were excluded. The CMT recording at the time of sampling, the infection status of the cow (new, first, chronic or repeat) as defined by national milk records and the number of quarters infected at the time of sampling were identified for negative and positive samples. Selecting quarters with a higher CMT score increased the likelihood of positive culture. Culturing from a sample with a CMT score of 3 was over three times more likely to yield a positive culture than a score of 1 (odds ratio [OR] 3.74, 95 per cent confidence interval [CI] 1.41 to 9.97) and 1.7 times more likely to yield a positive culture than a score of 2 (OR 1.70, 95 per cent CI 1.16 to 2.50). Culturing from a score of 2 was not statistically different from a score of 1 in terms of the likelihood that a positive culture would be identified (OR 2.20, 95 per cent CI 0.83 to 5.93). There was no statistically significant difference in the proportion of negative samples when comparing chronic, repeat, new and first infections or number of quarters infected.
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Affiliation(s)
- H Bishop
- Welsh Regional Veterinary Centre, Royal Veterinary College, Gelli Aur College Farm, Carmarthen.
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Li JP, Zhou HJ, Yuan L, He T, Hu SH. Prevalence, genetic diversity, and antimicrobial susceptibility profiles of Staphylococcus aureus isolated from bovine mastitis in Zhejiang Province, China. J Zhejiang Univ Sci B 2010; 10:753-60. [PMID: 19817000 DOI: 10.1631/jzus.b0920072] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This study was conducted to determine genetic diversity and antimicrobial susceptibility profiles of Staphylococcus aureus recovered from bovine mastitis in Zhejiang Province, China. Out of 3178 quarter milk samples from 846 lactating cows, among which 459 cows (54.3%) were found HMT positive, 890 quarters (28%) were found having subclinical mastitis. From 75 representative S. aureus isolates, 16 distinct types were identified by pulsed-field gel electrophoresis (PFGE). Four major PFGE types (A, B, C, and D) accounted for 82.7% of all isolates, and type A (41.3%) was observed in multiple herds across the studied areas. Each region was found to have a predominant type: Hangzhou type A (64.1%), Ningbo type C (34.5%) and type B (23.1%), Jinhua type D (53.3%), and Taizhou type C (62.5%). Results of antimicrobial susceptibility tests showed that 90.7% of the isolates were resistant to at least one antimicrobial. Resistance to penicillin and ampicillin (77.3%), tetracycline (60.0%), or erythromycin (48.0%) was observed. The bacteria resistant to multiple antibiotics such as penicillin, ampicillin, tetracycline, and erythromycin were commonly found. The information obtained from this study is useful for designing specific control programs for bovine S. aureus mastitis in this region.
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Affiliation(s)
- Jian-ping Li
- Department of Veterinary Medicine, College of Animal Science, Zhejiang University, Hangzhou 310029, China
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Capurro A, Aspán A, Ericsson Unnerstad H, Persson Waller K, Artursson K. Identification of potential sources of Staphylococcus aureus in herds with mastitis problems. J Dairy Sci 2010; 93:180-91. [DOI: 10.3168/jds.2009-2471] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2009] [Accepted: 10/05/2009] [Indexed: 11/19/2022]
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Correlation between mastitis occurrence and the count of microorganisms in bulk raw milk of bovine dairy herds in four selective culture media. J DAIRY RES 2009; 77:63-70. [PMID: 19939321 DOI: 10.1017/s0022029909990409] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Milk is the normal secretion of the mammary gland, practically free of colostrum and obtained by the complete milking of one or more healthy animals. Mastitis is an inflammatory process of the mammary gland and it may cause alterations in the milk. The present work aimed to verify whether it is possible, by means of the counts of microorganism in the bulk raw milk in four selective culture media, to establish a correlation with the occurrence of mastitis and therefore, to monitor this disease in bovine dairy herds. The following selective culture media were used: KF Streptococcus Agar, Edwards Agar, Baird-Parker Agar, Blood Agar plus potassium tellurite. Spearman's correlation coefficient was calculated in order to compare the occurrence of mastitis (percentage) in each herd with respective selective culture media counts of microorganisms in bulk raw milk. Thirty-six possibilities were analysed (Tamis and CMT-positive rates were compared with the log-transformed count in four selective culture media) and there was a negative correlation between Tamis 3 and the Baird-Parker Agar plate count. The total results of microbiological tests showed that there were three correlations of the counts in selective culture media. Fifty-two possibilities were analysed and there was a negative correlation between no-bacterial-growth mastitis rates and log10 of KF Streptoccocus Agar plate count and there were two positive correlations between coagulase-positive staphylococci and log10 of Baird-Parker Agar plate count and Blood Agar plus potassium tellurite plate count.
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