Antimicrobial and Virulence Characteristics of Escherichia coli Isolated from Mastitis and Endometritis Cases in Sheep and Goats

Seedy, Fawzy El; Radwan, Ismail; Hassan, Walid H.; Ramadn, Ahmed

doi:10.21608/jvmr.2022.155384.1066

“…In group A, originating from healthy udders, the prevalence of E. coli isolates is 4%, a figure relatively lower or comparable to that reported by other researchers [24,[59][60][61]. While some authors have reported higher prevalence rates (Ombarak et [62,63]. It is important to note that E. coli is not commonly regarded as a major causative agent for mastitis in ewes [64].…”

Section: Discussionmentioning

confidence: 52%

Pathogens in the Food Chain: Escherichia coli Strains in Raw Milk Originating from Ewes Treated for Mastitis with Various Therapeutic Protocols

Fotou,

Rozos,

Zaralis

et al. 2024

Applied Sciences

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Dairy products from ovine milk are very popular in the Mediterranean countries and are gaining a large portion of the market in EU countries and worldwide. EU legislation permits the dairy processing of raw ovine milk under certain conditions. To study the ecology and prevalence of E. coli in raw ewes’ milk and assess thus the public health risk, samples of milk were taken from 75 different sheep farms in the rural area of Epirus, Greece. The initial sampling was conducted in clinically healthy animals which were noted as controls (group A). From the same farms, samples were taken from animals with clinical mastitis and before treatment (group B). For therapeutic purposes, to some animals, a combination of penicillin and streptomycin was administrated (group C1), or tetracycline (group C2), or enrofloxacin (group C3). Finally, samples of raw milk were taken from the C groups, on the first day after the withdrawal period of the antibiotics used, when the milk is permitted to enter the food chain. In total, 97 isolates of Escherichia coli were recovered from all groups. Analysis revealed an impressive increase in E. coli strains in the milk of group B (39.33%) with respect to group A (5%). Even after treatment, although the prevalence was decreased, it was still found to be higher in the C groups than group A. E. coli O157:H7 strains absent from group A were detected in all other groups in relatively low occurrence rates with respect to other “O” serotypes but non-O157:H7 strains. Virulence factors such as the production of toxins (32.60% for serotoxin 1 and 18.47% for serotoxin 2) and hemolysin (42.39%) as well as biofilm formation capacity (52.17% of the total) and ESDL production (43.47% of the total) were also studied. All strains were also tested for susceptibility against 12 antibiotics by the MIC method and the results showed a high prevalence of resistance and multi-resistance. The presence of various resistant strains to antibiotics and pathogenic “O” serotype strains in the milk when it can enter the food chain again is an alarming conclusion.

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“…It occurs after several pathogens invades and colonizes the secretory tissue leading to in ammation of the mammary gland [11]. Mastitis in goats constitutes an enormous animal health problem [12].…”

Section: Introductionmentioning

confidence: 99%

Review on goat mastitis and associated bacterial zoonoses in raw milk from Mastitis infected dairy goat

Bedruddin

2023

Preprint

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Goat milk has medicinal value for children and contributes much more for the wellbeing of human baby. Goat milk provides more nutritional value than dairy cow’s milk. Despite the large number of goats and their contributions to the livelihood of the farmers, goat productivity is low due to prevalence of different diseases. One of the major diseases that affect the dairy goats is mastitis. Mastitis is an inflammation of the mammary gland, caused by over 150 different contagious or environmental micro‑organisms. Mastitis in goats constitutes an enormous animal health problem. In addition to causing health problems, inflammation of the mammary glands can also cause poor quality of milk. Milk produced by goats with mastitis presents a serious risk in terms of public health as it can be linked to milk-borne diseases for humans. Raw milk from Mastitis infected goat is usually colonized by a variety of many zoonotic pathogens such as enterohaemorragic Escherichia coli, Salmonella typhimurium, Listeria monocytogenes and Staphylococcus aureus, Brucella melitensis, Mycobacterium bovis. These pathogens in milk have been linked to mastitis milk. These zoonotic organisms may lead to health problems in the human population such as tuberculosis (TB), brucellosis, haemorrhagic enteritis, salmonellosis and food poisoning. Transmission of pathogens from animals to humans can occur via consumption of milk, especially when these products are consumed raw.

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Review on mastitis and public health importance of mastitis causing pathogens in raw milk from Mastitis infected dairy goat.

Bedruddin

2023

Preprint

0

View full text Add to dashboard Cite

Goat milk has medicinal value for children and contributes much more for the wellbeing of human baby. Goat milk provides more nutritional value than dairy cow’s milk. Despite the large number of goats and their contributions to the livelihood of the farmers, goat productivity is low due to prevalence of different diseases. One of the major diseases that affect the dairy goats is mastitis. Mastitis is an inflammation of the mammary gland, caused by over 150 different contagious or environmental micro‑organisms. Mastitis in goats constitutes an enormous animal health problem. In addition to causing health problems, inflammation of the mammary glands can also cause poor quality of milk. Milk produced by goats with mastitis presents a serious risk in terms of public health as it can be linked to milk-borne diseases for humans. Raw milk from Mastitis infected goat is usually colonized by a variety of many zoonotic pathogens such as enterohaemorragic Escherichia coli, Salmonella typhimurium, Listeria monocytogenes and Staphylococcus aureus, Brucella melitensis, Mycobacterium bovis. These pathogens in milk have been linked to mastitis milk. These zoonotic organisms may lead to health problems in the human population such as tuberculosis (TB), brucellosis, haemorrhagic enteritis, salmonellosis and food poisoning. Transmission of pathogens from animals to humans can occur via consumption of milk, especially when these products are consumed raw.

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Antimicrobial and Virulence Characteristics of Escherichia coli Isolated from Mastitis and Endometritis Cases in Sheep and Goats

Cited by 3 publications

References 10 publications

Pathogens in the Food Chain: Escherichia coli Strains in Raw Milk Originating from Ewes Treated for Mastitis with Various Therapeutic Protocols

Pathogens in the Food Chain: Escherichia coli Strains in Raw Milk Originating from Ewes Treated for Mastitis with Various Therapeutic Protocols

Review on goat mastitis and associated bacterial zoonoses in raw milk from Mastitis infected dairy goat

Review on mastitis and public health importance of mastitis causing pathogens in raw milk from Mastitis infected dairy goat.

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