Prévalence des principales bactéries responsables de mammites subcliniques des vaches laitières au nord-est de l’Algérie

Asnoune, Z. Boufaida; Butel, Marie‐José; Ouzrout, R.

doi:10.19182/remvt.10132

Cited by 11 publications

(6 citation statements)

References 14 publications

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“…By comparison, sub-clinical mastitis was detected in 79% of cows examined in the northeast region of Algeria (Boufaida-Asnoune et al, 2012). While Aggad et al (2009) reported in western Algeria that mastitis was detected in 47% of individual milks, which is close to the results of our study.…”

Section: Resultssupporting

confidence: 91%

Evaluation of the Udders Health Status through Somatic Cell Count and the Californian Mastitis Test in Algerian Dairy Farms

Kaouche-Adjlane

Mansour

2020

AJDFR

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Mastitis is the most common infectious disease in dairy cattle farming. It is responsible for the quantitative and qualitative milk deterioration. The objective of this study is to evaluate the mammary health status, based on the individual cell count (ICC) of milk explained by the Californian Mastitis Test (CMT) score. A total of 280 milk samples from the central region of Algeria were examined. The mammary health diagnosis has divided the milk samples in two groups: the first has 55% of samples from the healthy udders. The second group includes 45% of samples from infected udders, about 5% of them with clinical mastitis which showed cell levels greater than 5 million / ml indicating a very alarming epidemiological situation. The results obtained vary from one farm to another and within the same farm, depending on the hygienic practices diversity (P less than 0.05). The work carried out shows that good farming practices are necessary to maintain the safety of the product.

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Section: Resultssupporting

confidence: 91%

Evaluation of the Udders Health Status through Somatic Cell Count and the Californian Mastitis Test in Algerian Dairy Farms

Kaouche-Adjlane

Mansour

2020

AJDFR

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“…Mastitis is a common inflammation of the cow udder leading to defect in milk production quantitatively and qualitatively leading to economic losses. In the present study, 239 (66.4%) cows presented a positive CMT test which was in accordance with the previous study in Algeria where 79% of the tested cows were CMT + (Asnoune et al, 2012), and with the study on milk quality in West Algeria (Aggad et al, 2009). Escherichia coli can harbor and transmit resistance to antibiotics.…”

Section: Discussionsupporting

confidence: 93%

Antibiotic Resistance Profile of Escherichia coli Isolated from Bovine Subclinical Mastitis of Dairy Farms in Algeria from 2017 to 2019

Ghallache¹,

Mohamed-Cherif²,

China³

et al. 2021

WVJ

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Mastitis in cows is a major problem in dairy farms leading to a decrease in the quantity and quality of milk. The aim of the present study was to examine the association between the presence of Escherichia coli (E. coli) in milk and the subclinical mastitis, and to characterize the antibiotic resistance profiles of the isolated E. coli. In the current study, a total of 360 cow raw milk samples from three dairy farms of the region of Algiers were analyzed. The analysis period lasted from Spring 2017 to Winter 2019. The California Mastitis Test (CMT) was applied to detect subclinical mastitis. The E. coli strains were isolated from milk using conventional bacteriological methods. The antibiotic resistance profile of the isolated E. coli strains to 12 different antibiotics was tested using the disk diffusion method. On β-lactamase-producing strains, a double diffusion test was applied to identify the Extended-spectrum β-lactamase (ESBL) phenotype. Finally, the ctXx-M genes were amplified by PCR. Two-thirds (66.4%) of the milk samples were positive for the CMT test. A total of 97 E. coli strains were isolated from the milk samples, their resistance to antibiotics was tested, and 3.1% of the strains were resistant to trimethoprim-sulfamethoxazole, 6.2% to chloramphenicol, 12.3% to gentamicin, 13.4% to colistin, 23.3% to amoxicillin/clavulanate, 31.9% to kanamycin, 39.2% to enrofloxacin, 51.5% to cefotaxime, 52% to tetracycline, 57.7% to ampicillin, 74.3% to nalidixic acid, and 75.3% to amoxicillin. Furthermore, most of the E. coli strains (92.8%) were resistant to more than one antibiotic with a Multiple Antibiotic Resistance index ranging from 0 to 0.8. The 50 strains resistant to cefotaxime were analyzed for an ESBL phenotype. 39 of them (78%) were positive to the double-disk synergy test. Among the 39 ESBL positive strains, 27 (69.2%) were confirmed for the presence of a CTX-M gene by PCR. The present study showed that multiple drug-resistant E. coli, including ESBL-carriers, were frequently isolated from the milk of dairy cows in Algeria. The results underlined that the use of antibiotics on farms must be reasoned to avoid the spread of resistant strains in animals and human populations.

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“…As well as the lowest recorded in Bangladesh 64.9% (Hoque et al, 2014), in Kenya 73.1% (Mbindyo et al, 2020) and in Uganda 86.2% (Abrahmsén et al, 2013). Furthermore, the incidence at quarter level was 31.1%, which was also higher than recorded in the northeast and central region of Algeria 23.6% (Boufaida et al, 2012) and 28.5% (Saidi et al, 2013), respectively, and in Senegal 11.9% (Kalandi et al, 2017). A plausible explication of this high prevalence in the study area could be that proper farming management and earlier screen for subclinical mastitis were not practiced.…”

Section: Discussionmentioning

confidence: 74%

Infectious aetiologies of subclinical bovine mastitis and antimicrobial susceptibility on northwest of Algeria

2021

Veterinaria

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Subclinical mastitis is a multifactorial, complex, and one of the most common and money wasting disease in dairy cattle farming. The objective of this study was to carry out a screening of subclinical mastitis by California mastitis test and to determine the infectious aetiology. A score ≥ 1 was considered positive. A total of 140 udder quarters were clinically examined, from which 135 were screened for mastitis; 42 samples were positive and were subjected to bacteriological analysis. In addition, an antibiotic sensitivity test was done. The prevalence of subclinical mastitis was 31.1% at quarters level and 62.8% in dairy cows, hind quarters were the most infected 34.78% compared to fore quarters 27.27%. The frequency of infected quarters, according to California mastitis test scores +1, +2 and +3, was 7.4%, 14.8% and 8.8%, respectively. The most isolated germs from the samples were coagulase negative staphylococci with a rate of 43.8%, followed by Enterobacter cloacae (8.77%), Enterococcus faecium (7.02%), Klebsiella pneumoniae (5.26%) and Enterococcus faecalis (5.26%). In vitro susceptibility test showed that all the isolates tested were sensitive to neomycin. The trimethoprim, spectinomycin and erythromycin were active against all staphylococci, and had a moderate effect on Enterobacteriaceae. Amoxicillin was inactive against all strains. The prevalence of mastitis was high, which may cause low productivity and economic loss to dairy farmers. Detailed investigation is needed to identify the risk factors. Hence, there is a need to reduce the incidence of subclinical mastitis by adopting preventive and therapeutic measures for better economy of the dairy farmers.

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Prévalence des principales bactéries responsables de mammites subcliniques des vaches laitières au nord-est de l’Algérie

Cited by 11 publications

References 14 publications

Evaluation of the Udders Health Status through Somatic Cell Count and the Californian Mastitis Test in Algerian Dairy Farms

Evaluation of the Udders Health Status through Somatic Cell Count and the Californian Mastitis Test in Algerian Dairy Farms

Antibiotic Resistance Profile of Escherichia coli Isolated from Bovine Subclinical Mastitis of Dairy Farms in Algeria from 2017 to 2019

Infectious aetiologies of subclinical bovine mastitis and antimicrobial susceptibility on northwest of Algeria

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