1,720,975 research outputs found
INDIVIDUAZIONE DI LESIONI ATTRIBUIBILI ALL’UTILIZZO ILLECITO DI PROMOTORI DI CRESCITA IN BOVINI MACELLATI IN SARDEGNA
No full textValutazione delle alterazioni anatomo-isto-patologiche in organi bersaglio di bovini macellati nella regione Sardegna riconducibili all'impiego illecito di promotori di crescita. Risultati preliminari
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
“Valutazione della sensibilità agli antibiotici di sierotipi di Salmonella isolati in macelli suini”
No full textSustainability of biodiversity by valorization of Sarda breed goat dry hams
No full textGoat farming is a very important resource, expecially in marginal and unlikely
exploitable Mediterranean areas. They are extensively reared, mainly for milk
production and for suckling kids meat. The meat from adult goats instead is not
profitable, because of its very low commercial value. The transformation of the
Sarda goat (native breed) meat in ripened products (ham) would contribute to
safeguard the Sardinian goat supply chain. In the present study, in order to
characterize the Sarda breed goat dry ham, five batches (L1–L5), processed in a
traditional plant, were analyzed. The chemical-physical characteristics were
determined in the following stages: fresh ham (MP), after salting (S), after drying
(E) and at the end of ripening (P). The microbiological parameters were
determined in MP and in P. The dynamics of pH during processing were similar
to those of cured meat products (in P: 6.58±0.26). The aw value decreased during
the processing up to 0.79±0.03. Regarding the microbiological parameters, in P
the coagulase negative Staphylococci were the prevalent flora (4.38±1.08 Log10
cfu/g), followed by the Lactic acid bacteria (2.46±1.00). The Moulds and Yeasts
were not constant and the presence of pathogens was not highlighted
Prevalence and molecular characterization of Listeria monocytogenes in traditional fermented pork sausages produced in Italy
No full textTipizzazione mediante ribotyping e PFGE di ceppi di Listeria monocytogenes isolati da alimenti
No full textCaratterizzazione di E.coli patogeni isolati in matrici ovine
No full textFleeces, carcass surface, mucosal gut and faeces samples, collected from 95 slaughtered sheep and lambs from three abattoirs, were examined. The aim of this study was: 1) to evaluate the prevalence of the Verocytotoxic E. coli (VTEC); 2) to obtain virulence profile (stx1, stx2, hlyA and eae) by multiplex PCR; 3) to define the ovine-specific serogroup pathogenic power for the humans. An overall prevalence of 11.1% (adults 14%, lambs 7.8%) was found by direct PCR test. The VTEC occurrence was 18.9% in fleeces, 14.7% on carcasses and 10.5% in mucosal gut. According to the multiplex PCR the following results were obtained: 21% of the isolates belonged to VTEC pathogroup, within 92% were EHEC; 37.9% were identified as EPEC pathogroup. Forty one % of the strains were negative for all the genes. None of the isolates belonged to O157 and 0146 serogroups, while the 57% resulted O91
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