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Tzora A, Voidarou C(C, Giannenas I, Bonos E, Fotou K, Nelli A, Grigoriadou K, Karamoutsios A, Basdagianni Z, Dokou S, Tsinas A, Skoufos I. Effects of Dietary Omega-3 Enrichment on the Chemical Composition and the Pathogenic Microbiota of Ovine Milk. Foods 2022; 11:foods11223736. [PMID: 36429328 PMCID: PMC9689586 DOI: 10.3390/foods11223736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 11/11/2022] [Accepted: 11/16/2022] [Indexed: 11/22/2022] Open
Abstract
The demand for ovine milk and ovine dairy products is constantly increasing due to their exceptional sensorial characteristics and their health benefits for consumers. However, dairy fat content and composition are of particular concern for consumers as well as the medical community, as there are risk factors for coronary disease, diabetes mellitus, cancer, and other serious diseases. For this reason, attempts have been made to control/regulate the fat composition of ovine milk by modifying sheep dietary intake of polyunsaturated fatty acids. In this experimental trial, a group of sheep were fed for 30 days a diet enriched in flaxseeds and lupines, feed ingredients rich in omega-3 fatty acids, aiming to investigate the effects on fat composition and the microbiota of ovine milk. Chemical analysis of the collected milk showed that the omega-3 and omega-6 content was increased. On the opposite, the atherogenic and thrombogenic indexes decreased. Of importance was the semi-protective effect on the udder by the increased omega-3 dietary intake, as depicted by its impact on the biodiversity of the pathogenic microbiota. These findings suggest that ovine milk could be modified under specific conditions to be more appropriate for the consumption by people belonging to high-risk groups for various diseases.
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Affiliation(s)
- Athina Tzora
- Laboratory of Animal Health, Food Hygiene and Quality, Department of Agriculture, University of Ioannina, 471 32 Arta, Greece
- Correspondence:
| | - Chrysoula (Chrysa) Voidarou
- Laboratory of Animal Health, Food Hygiene and Quality, Department of Agriculture, University of Ioannina, 471 32 Arta, Greece
| | - Ilias Giannenas
- Laboratory of Animal Nutrition, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Eleftherios Bonos
- Laboratory of Animal Health, Food Hygiene and Quality, Department of Agriculture, University of Ioannina, 471 32 Arta, Greece
| | - Konstantina Fotou
- Laboratory of Animal Health, Food Hygiene and Quality, Department of Agriculture, University of Ioannina, 471 32 Arta, Greece
| | - Aikaterini Nelli
- Laboratory of Animal Health, Food Hygiene and Quality, Department of Agriculture, University of Ioannina, 471 32 Arta, Greece
| | - Katerina Grigoriadou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization—DEMETER, Thermi, 570 01 Thessaloniki, Greece
| | - Achilleas Karamoutsios
- Laboratory of Animal Health, Food Hygiene and Quality, Department of Agriculture, University of Ioannina, 471 32 Arta, Greece
| | - Zoitsa Basdagianni
- Laboratory of Animal Husbandry, Department of Animal Production, School of Agriculture, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Stella Dokou
- Laboratory of Animal Nutrition, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Anastasios Tsinas
- Laboratory of Animal Health, Food Hygiene and Quality, Department of Agriculture, University of Ioannina, 471 32 Arta, Greece
| | - Ioannis Skoufos
- Laboratory of Animal Health, Food Hygiene and Quality, Department of Agriculture, University of Ioannina, 471 32 Arta, Greece
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Distribution and Characterization of Antimicrobial Resistant Pathogens in a Pig Farm, Slaughterhouse, Meat Processing Plant, and in Retail Stores. Microorganisms 2022; 10:microorganisms10112252. [DOI: 10.3390/microorganisms10112252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 11/03/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
The emergence of antibiotic resistance in foodborne pathogens isolated from meat pro-ducts and their producing environment has been an increasing and leading threat to public health. The aim of the study was to identify pathogens and their antimicrobial resistance isolated from pig production to pork meat distribution phases. Through this study, food spoilage and foodborne or clinical pathogenic bacteria were isolated and identified from pork (belly and neck) meat product and its related environmental samples that include pig swabs, diets, feces, liquid manure, workers’ gloves, dust fan swabs, carcass swabs, floor swabs, and drain water in the affiliated farm, slaughterhouse, meat processing plant, and in retail stores. All carcasses at the slaughterhouse and meat products at the meat processing plant were tracked from pigs at a targeted farm. Nine different selective media agars were used to effectively isolate various pathogenic bacteria. A total of 283 presumptive pathogenic bacteria isolated from 126 samples were selected and identified using MALDI-ToF MS. Twenty-three important foodborne pathogens were identified, and some of them, Shiga-toxin-producing E. coli (STEC), Listeria monocytogenes, Staphylococcus aureus, and Yersinia enterocolitica, were further confirmed using PCR. The PFGE patterns of 12 STEC isolates were grouped by sample source or site. All the foodborne pathogens used in the study were not resistant to amoxicillin/clavulanate, ciprofloxacin, and gentamicin, whereas some of the STEC, L. monocytogenes, and S. aureus isolates were resistant to various antibiotics, including ampicillin, erythromycin, tetracycline, and vancomycin. The most common antimicrobial resistance pattern in the pathogenic STEC isolates was AMP-KAN-STR-SXT-TET. Consequently, this study provides valuable information for the distribution of antimicrobial-resistant pathogens along the pork meat production chain and can assist farmers and stakeholders to develop a systematic strategy for reducing the current emergence and spread of antimicrobial resistance in the different phases of pig production and distribution.
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Molecular Characterizations and Antimicrobial Susceptibility of Extended-Spectrum ß-lactamase (ESBL) Producing Proteus spp. Clinical Isolates in Babol, Northern Iran. JOURNAL OF MEDICAL MICROBIOLOGY AND INFECTIOUS DISEASES 2022. [DOI: 10.52547/jommid.10.3.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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