Gibbons, J. F.; Boland, F.; Egan, J.; Fanning, S.; Markey, B. K.; Leonard, F. C. (Ireland)
Zoonoses and Public Health (2016)
Four specialist pig veterinary practitioners were asked toidentify farms suitable for inclusion in this study based onfarm type (farrow-to-finish units) and antimicrobial usein-feed on the farms. As such, these farms represent a con-venience sample of Irish pig herds. Farms were selectedfrom throughout the Republic Of Ireland and all farms uti-lized antimicrobials in-feed. However, the farms were clas-sified as long-term or short-term antimicrobial use, basedon farm prescribing data during the previous 6 months.Long-term use farms were those farms where antimicro-bials were used in-feed for more than 10 days after pigswere weaned while short-term use farms were those farmswhere antimicrobial use in-feed only occurred up to10 days post-weaning at the latest. Forty pig farms wereidentified and samples taken; twenty farms were classifiedas long-term antimicrobial use and twenty as short-termantimicrobial use based on prescribing data. The veterinary practitioners were also asked to supply theantimicrobial prescribing data for each farm for the6 months prior to sampling.
A composite sample of fresh faeces (approx. 100 g) wastaken from the floors of five pens in each of the follow-ing four production stages by the veterinary practitioneron each farm: farrowing, first-stage weaned pigs, second-stage weaned pigs and finisher pigs. Rectal swabs weretaken from a single piglet from each of 5 l in the far-rowing house and were subsequently pooled and treatedas a single sample.
AST Method: None
Reference explicitly reports AST breakpoints: True
Reference reports using a MIC table: True
Is Excluded: False
| Country | Sub-Region | Sub-Region Detail |
|---|---|---|
| Ireland | Other (Other) | Country-wide |
| ID | Note | Resolution |
|---|
| Title | Host | Host | Production Stage | Description | ROs |
|---|---|---|---|---|---|
| Tetracycline use | Swine | Not Specified | Farm | Any tetracycline use within the 6 months prior to sampling. | 3 |
| Duration of antimicrobial use | Swine | Not Specified | Farm | Long- vs short-term use: Long-term use = antimicrobials were used in-feed for more than 10 days after pigs were weaned. Short-term use farms = antimicrobial use in-feed only occurred up to 10 days post-weaning at the latest. | 4 |
| Beta-lactam use | Swine | Not Specified | Farm | Any beta-lactam use within the 6 months prior to sampling. | 2 |
| Duration of antimicrobial use | Swine | Grower-finisher | Farm | Classified based on farm prescribing data from the 6 months prior to sampling. Long-term use farms: AMU in-feed for >10 days post-weaning. Short-term use farms: AMU in-feed only up to 10 days post-weaning. AMR from Finisher stage: 11-20 wks old; 32-85 kg. | 1 |
| Aminoglycoside use | Swine | Not Specified | Farm | Any aminoglycoside use within the 6 months prior to sampling. | 4 |
| Trimethoprim-sulphonamide use | Swine | Not Specified | Farm | Any trimethoprim-sulphonamide use within the 6 months prior to sampling. | 5 |
| Antimicrobial use | Swine | Not Specified | Farm | Other antimicrobial use other than beta-lactam, aminoglycoside, trimethoprim-sulphonamide, or tetracycline within the 6 months prior to sampling. | 4 |
| Duration of antimicrobial use | Swine | Weaners | Farm | Classified based on farm prescribing data from the 6 months prior to sampling. Long-term use farms: AMU in-feed for >10 days post-weaning. Short-term use farms: AMU in-feed only up to 10 days post-weaning. AMR from Weaner 1 stage: 3-7 wks old; 7-20 kg. | 1 |
| Tetracycline use | Swine | Not Specified | Farm | Any tetracycline use within the 6 months prior to sampling. | 2 |
| Duration of antimicrobial use | Swine | Piglets | Farm | Classified based on farm prescribing data from the 6 months prior to sampling. Long-term use farms: AMU in-feed for >10 days post-weaning. Short-term use farms: AMU in-feed only up to 10 days post-weaning. AMR from Piglet stage: 0-3 wks old; 1.5-7 kg. | 1 |