The Incidence of Clinical Mastitis and Distribution of Microorganisms in Yangtze Dairy Farm

Li, Si Yao; Liu, Shi Yu; Wang, Hou Kun; Zhang, Yan; Li, Zheng Rong; Chen, Hao; Wan, Chun Yun; Yang, Fuyuan

doi:10.9734/ajaar/2018/41954

Cited by 3 publications

(2 citation statements)

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“…For clinical mastitis, following diagnosis, administration of antibiotics is undertaken by farmers and animal health practitioners. Aggressive administration of antibiotics and misuse of antibiotics in the management of mastitis is often associated with the emergence and spread of antimicrobial resistance (AMR) (Li et al., 2018). Among the pastoralists in Kenya, the administration of these drugs by farmers is common (Ogola et al,2007), and this can lead to an increase in the selection of antibiotic‐resistant strains.…”

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confidence: 99%

Prevalence of subclinical mastitis, associated risk factors and antimicrobial susceptibility pattern of bacteria isolated from milk of dairy cattle in Kajiado Central sub‐county, Kenya

Michira,

Kagira,

Maina

et al. 2023

Veterinary Medicine & Sci

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BackgroundLiterature is scarce on the occurrence of bovine mastitis and antimicrobial resistance among dairy animals kept by pastoralists in the Kenya.ObjectivesA cross‐sectional study was carried out to investigate the prevalence and risk factors of subclinical mastitis (SCM) and evaluate the antibiotic sensitivity of bacteria isolated from dairy cattle kept by farmers in Kajiado Central sub‐county, Kenya.MethodsA total of 202 lactating cows from 40 farms were sampled. Milk from the cows was screened for SCM using the California mastitis test, and the bacteria present in the milk samples were determined using standard bacteriological methods. The sensitivity of the isolated coagulase‐negative staphylococci (CNS) and Staphylococcus aureus against antibiotics was tested using the Kirby–Bauer disk diffusion method.ResultsThe prevalence of SCM at quarter‐ and cow‐level was 31.7% and 53%, respectively. The prevalence of SCM was significantly higher (p < 0.05) in exotic breeds of cattle and those kept under an extensive system of production. A total of 19 bacterial species were isolated with the majority being CNS (40.1%), S. aureus (15.8%) and Micrococcus spp. (10.4%). S. aureus isolates showed varied resistance to the tested antibiotics with the highest resistance being against ceftazidime (75%), amoxycillin (50%) and streptomycin (46.9%). Several S. aureus isolates were resistant to oxacillin (34.4%) and cefoxitin (12.5%). CNSs were more resistant against ceftazidime (79.1%), amoxycillin (34.6%) and oxacillin (32.1%). Majority (92%–100%) of the Staphylococcus spp. were highly sensitive to ciprofloxacin a fluoroquinolone and augmentin.ConclusionsThe high prevalence of SCM and bacteria resistant to antibiotics shows a need for animal health professionals and farmers to develop strategies for the management of mastitis and antibiotic resistance in dairy cows in the study area.

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Section: Introductionmentioning

confidence: 99%

Prevalence of subclinical mastitis, associated risk factors and antimicrobial susceptibility pattern of bacteria isolated from milk of dairy cattle in Kajiado Central sub‐county, Kenya

Michira,

Kagira,

Maina

et al. 2023

Veterinary Medicine & Sci

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“…Streptococcus agalactiae is one of the significant bacteria that cause inflammation of the mammary glands in ewes resulting in decreasing milk yeild. It is a Gram positive bacteria that belong to the beta group and called a Group B Streptococcus or GBS (2,3). Furthermore, Streptococci are the general group of bacteria causing mastitis in sheep after Staphylococci species (4,5).…”

Section: Introductionmentioning

confidence: 99%

Using Real-Time PCR to Investigate Some of Antibiotic Resistance Genes from Streptococcus agalactiae Isolates from ewe Mastitis cases in Nineveh province

Albanna

Al-Layla

2020

Baghdad Sci.J

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In this study, from a total of 856 mastitis cases in lactating ewes, only 34 Streptococcus agalactiae isolates showed various types of resistance to three types of antibiotics (Penicillin, Erythromycin and Tetracycline). St. agalactiae isolates were identified according to the standard methods, including a new suggested technique called specific Chromogenic agar. It was found that antibiotic bacterial resistance was clearly identified by using MIC-microplate assay (dilution method). Also, by real-time PCR technique, it was determined that there were three antibiotics genes resistance ( pbp2b, tetO and mefA ). The high percentage of isolate carried of a single gene which was the Tetracycline (20.59%) followed by percentage Penicillin was (17.65%) and the lowest was in Erythromycin (11.77%). However, there were many isolates that carried two genes of antibiotics resistance represented by Penicillin and Erythromycin with collective present of 38.22%, and for the Penicillin and Tetracycline, the percentage was found to be 11.77%. In contrast, no common gene with two antibiotics (Erythromycin and Tetracycline) was detected. On the other hand, it was found that no bacterial sharing with three kinds of antibiotic resistance genes ( pbp2b, tetO and mefA ). This study has revealed that the St. agalactiae isolates did induce recurrent mastitis in lactating Iraqi's ewes.

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Détection de la mammite bovine par le test CMT dans les conditions de terrain en Algérie

Saidani,

Zeroual,

Metref

et al. 2024

Rev. Elev. Med. Vet. Pays Trop.

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Les mammites sont une cause majeure de perte économique pour l’industrie laitière. Elles affectent fréquemment les vaches laitières post-partum qui sont élevées en stabulation permanente, indépendamment de la race, de la catégorie d’âge et de la conformation de la mamelle. Cette étude a pour but d’évaluer la prévalence et l’incidence annuelle des mammites cliniques et subcliniques dans les élevages laitiers de la région montagneuse située entre les provinces de Bejaia et de Tizi Ouzou. L’essai a été mené dans des conditions de terrain pour démontrer l’intérêt du California Mastitis Test (CMT) pour le diagnostic précoce de la mammite bovine subclinique. Quatre cents vaches issues de trente-deux petites exploitations laitières, de races et de classes d’âge différentes, ont été dépistées à l’aide du CMT après un examen clinique préliminaire, sur une période de janvier 2019 à février 2020. Deux cent dix-neuf vaches dépistées avaient au moins un quartier atteint, soit une prévalence globale de 54,75 %, avec plus de cas de mammites subcliniques (35,5 %) que de mammites cliniques (17,25 %). Le CMT a permis un diagnostic précoce, sans quoi deux tiers des cas seraient passés inaperçus. La détection précoce peut ainsi améliorer les soins vétérinaires et réduire les pertes économiques.

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The Incidence of Clinical Mastitis and Distribution of Microorganisms in Yangtze Dairy Farm

Cited by 3 publications

References 4 publications

Prevalence of subclinical mastitis, associated risk factors and antimicrobial susceptibility pattern of bacteria isolated from milk of dairy cattle in Kajiado Central sub‐county, Kenya

Prevalence of subclinical mastitis, associated risk factors and antimicrobial susceptibility pattern of bacteria isolated from milk of dairy cattle in Kajiado Central sub‐county, Kenya

Using Real-Time PCR to Investigate Some of Antibiotic Resistance Genes from Streptococcus agalactiae Isolates from ewe Mastitis cases in Nineveh province

Détection de la mammite bovine par le test CMT dans les conditions de terrain en Algérie

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