Analysis of bulk goats’ milk and milk-filters from Valtellina and Valchiavenna (Lombardy Prealps) for the presence of Listeria species

Soncini, G.; Valnegri, L.

doi:10.1016/j.smallrumres.2004.09.013

Cited by 5 publications

(3 citation statements)

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“…; 1% of the environmental samples carried L. ivanovii . Soncini and Valnegri (2005) found L. ivanovii in milk‐filters of two of the eight goat cheese factories studied. Chambel et al.…”

Section: Resultsmentioning

confidence: 93%

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Predominance and Persistence of a Single Clone of Listeria ivanovii in a Manchego Cheese Factory Over 6 Months

Vázquez-Villanueva

Orgaz

Ortiz³

et al. 2010

Zoonoses and Public Health

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In an attempt to study the diversity and persistence of molecular subtypes of pathogenic Listeria spp. in a cheese factory at the La Mancha region of Spain, 43 samples were taken from incoming raw milk (cow's, ewe's, goat's and mixed species) and from certain food-contact and environmental surfaces before and/or after sanitation. Of these samples, 12 contained pathogenic Listeria. From the chromogenic agar plates corresponding to those, 46 phosphatidylinositol-specific phospholipase C-positive isolates were randomly taken for further analysis, including biochemical tests and pulsed-field gel electrophoresis (PFGE). They coincided in identifying all the 46 as Listeria ivanovii subsp. ivanovii, apparently a single PFGE type. Both ewe's and goat's raw milk batches from asymptomatic animals tested along the 6-month period persistently carried the same strain, which was also obtained from inner surfaces of raw milk truck tanks and the milk dump tank at the cheese factory. Biofilm-forming abilities of this L. ivanovii clone and interference against L. monocytogenes Scott A reference strain were tested, but failed to account for the clone's apparent pervasive presence.

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“…; 1% of the environmental samples carried L. ivanovii . Soncini and Valnegri (2005) found L. ivanovii in milk‐filters of two of the eight goat cheese factories studied. Chambel et al.…”

Section: Resultsmentioning

confidence: 93%

“…The same group (Gaya et al., 1996) found L. ivanovii in 0.21% of the tested 1445 goat’s raw milk samples. Soncini and Valnegri (2005) in Italy, who did not find L. monocytogenes , detected L. ivanovii in 1% of their goat’s raw bulk milk samples. The highest figures have been reported by Vazquez‐Salinas et al.…”

Section: Resultsmentioning

confidence: 98%

Predominance and Persistence of a Single Clone of Listeria ivanovii in a Manchego Cheese Factory Over 6 Months

Vázquez-Villanueva

Orgaz

Ortiz³

et al. 2010

Zoonoses and Public Health

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show abstract

“…The organism is an infrequent but confirmed pathogen of ruminants. There are a few reports of isolation of the organism from clinical samples from sheep [ 5 , 6 ], including milk samples [ 7 , 8 ], as well as from goats [ 9 , 10 ], cattle [ 11 , 12 ] and buffaloes [ 13 ] In ruminants, the organism has been mainly associated with abortion [ 14 ]. Isolation of the organism from other animal species has rarely been reported.…”

Section: Introductionmentioning

confidence: 99%

Isolation of Listeria ivanovii from Bulk-Tank Milk of Sheep and Goat Farms—From Clinical Work to Bioinformatics Studies: Prevalence, Association with Milk Quality, Antibiotic Susceptibility, Predictors, Whole Genome Sequence and Phylogenetic Relationships

Lianou

Skoulakis

Michael

et al. 2022

Biology

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A cross-sectional study was performed in 325 sheep and 119 goat dairy farms in Greece. Samples of bulk-tank milk were examined by standard microbiological techniques for Listeria spp. Listeria monocytogenes was isolated from one (0.3%) and Listeria ivanovii from three (0.9%) sheep farms. No associations between the isolation of L. monocytogenes or L. ivanovii and milk quality were found. No resistance to antibiotics was identified. Three variables emerged as significant predictors of isolation of the organism: the presence of pigs, low average relative humidity and a high number of ewes on the farm. The three L. ivanovii isolates were assessed in silico for identification of plasmids, prophages, antibiotic resistance genes, virulence factors, CRISPRs and CAS genes. Phylogenetic analysis using the core genome revealed that the three strains belonged to the L. ivanovii subsp. ivanovii branch and were especially close to the PAM 55 strain. All strains of the branch appeared to be very similar, with the distance between them being small.

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Recent advances in exploiting goat's milk: Quality, safety and production aspects

Silanikove

Leitner²,

Merin

et al. 2010

Small Ruminant Research

376

192

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Analysis of bulk goats’ milk and milk-filters from Valtellina and Valchiavenna (Lombardy Prealps) for the presence of Listeria species

Cited by 5 publications

References 1 publication

Predominance and Persistence of a Single Clone of Listeria ivanovii in a Manchego Cheese Factory Over 6 Months

Predominance and Persistence of a Single Clone of Listeria ivanovii in a Manchego Cheese Factory Over 6 Months

Isolation of Listeria ivanovii from Bulk-Tank Milk of Sheep and Goat Farms—From Clinical Work to Bioinformatics Studies: Prevalence, Association with Milk Quality, Antibiotic Susceptibility, Predictors, Whole Genome Sequence and Phylogenetic Relationships

Recent advances in exploiting goat's milk: Quality, safety and production aspects

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