| Attributes | Values |
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| rdf:type
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| Description
| - The purpose of our study was to evaluate the occurrence of antibiotic resistance (ATBR) in S. aureus (SA), S. haemolyticus (SH), S. chromogenes (SC), at dairy farms in Czech Republic. Besides, we made comparison between conventional and organic production systems in dairy cattle. During statistical analysis we had to tackle with problems associated with log-transforming data and data from a field research: unbalanced data with combination of fixed (species, production system) and random (farm) effects. 502 milk samples from 6 farms with organic and 40 farms with conventional production system were tested on the occurrence of three Staphyloccocus species and their resistance to 14 ATB. The mean occurrence of ATBR was lower at organic farms (0.19 per sample) than at conventional farms (0.49 per sample). The reason was because a few farms in the convention system had higher occurrence of ATBR, and moreover, the samples from these farms has been sent to the laboratory more often. This part of variability was represented as the significant random effect %22farm%22 in the model (The AIC without %22farm%22 got worse from 416.6 to 1116.4). Generally, the systematic fixed effect of production system on ATBR was not significant (p=0.766). As concerns to species, the highest mean occurrence of ATBR was in SH (1.15 per sample, p<0.001). Differences in occurrence of ATBR between SA (0.44) and SC (0.04) was not significant (p=0.213). Besides, we did not find any SC at farms with organic production system at all. We can conclude that occurrence of resistance to ATB is not systematically affected by the production system but is caused by management at the very farm, as the significant random effect %22farm%22 indicated. It was also obvious that there were 20 conventional farms with no ATBR. The lme4 package for fitting of regression GLMM seems to be very helpful equipment to test hypotheses and evaluate data by the efficient manner and should deserve more attention of scientists.
- The purpose of our study was to evaluate the occurrence of antibiotic resistance (ATBR) in S. aureus (SA), S. haemolyticus (SH), S. chromogenes (SC), at dairy farms in Czech Republic. Besides, we made comparison between conventional and organic production systems in dairy cattle. During statistical analysis we had to tackle with problems associated with log-transforming data and data from a field research: unbalanced data with combination of fixed (species, production system) and random (farm) effects. 502 milk samples from 6 farms with organic and 40 farms with conventional production system were tested on the occurrence of three Staphyloccocus species and their resistance to 14 ATB. The mean occurrence of ATBR was lower at organic farms (0.19 per sample) than at conventional farms (0.49 per sample). The reason was because a few farms in the convention system had higher occurrence of ATBR, and moreover, the samples from these farms has been sent to the laboratory more often. This part of variability was represented as the significant random effect %22farm%22 in the model (The AIC without %22farm%22 got worse from 416.6 to 1116.4). Generally, the systematic fixed effect of production system on ATBR was not significant (p=0.766). As concerns to species, the highest mean occurrence of ATBR was in SH (1.15 per sample, p<0.001). Differences in occurrence of ATBR between SA (0.44) and SC (0.04) was not significant (p=0.213). Besides, we did not find any SC at farms with organic production system at all. We can conclude that occurrence of resistance to ATB is not systematically affected by the production system but is caused by management at the very farm, as the significant random effect %22farm%22 indicated. It was also obvious that there were 20 conventional farms with no ATBR. The lme4 package for fitting of regression GLMM seems to be very helpful equipment to test hypotheses and evaluate data by the efficient manner and should deserve more attention of scientists. (en)
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| Title
| - Occurrence of antibiotic resistance in Staphylococcus spp. at dairy farms with conventional and organic system and its evaluation with GLMM
- Occurrence of antibiotic resistance in Staphylococcus spp. at dairy farms with conventional and organic system and its evaluation with GLMM (en)
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| skos:prefLabel
| - Occurrence of antibiotic resistance in Staphylococcus spp. at dairy farms with conventional and organic system and its evaluation with GLMM
- Occurrence of antibiotic resistance in Staphylococcus spp. at dairy farms with conventional and organic system and its evaluation with GLMM (en)
|
| skos:notation
| - RIV/49608851:_____/11:#0000512!RIV12-MZE-49608851
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| http://linked.open...avai/predkladatel
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(LA10029), P(ME09081), P(QH81111)
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/49608851:_____/11:#0000512
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - antibiotic resistance, organic farm, dairy, GLMM (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...iv/tvurceVysledku
| - Dufek, Aleš
- Zhang, Y.
- Manga, Ivan
- Vyletělová, Marcela
|
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