There may be local regulations or labellings to (e.g. some organic labeling means no antibiotic and so on). But as a first rule I just try to avoid meat from "bad" countries. E.g. we get quite a lot of imported Brazilian beef in stores and I know it's terrible both for deforestation and antibiotics so I avoid that completely. Some interesting differences in the map is e.g. between Australia And NZ.
https://journals.plos.org/globalpublichealth/article/figure?...
or read through the two major cited articles:
Mulchandani et al. (2023) Global trends in antimicrobial use in food-producing animals: 2020 to 2030 https://journals.plos.org/globalpublichealth/article?id=10.1...
Delia Grace (2015) Review of Evidence on Antimicrobial Resistance and Animal Agriculture in Developing Countries https://assets.publishing.service.gov.uk/media/57a0897e40f0b...
There's some devil in the details, of course, are the antimicrobials used in animals the same as those used in humans? ie. Does increasing resistance in animals to X product result in resistance to Y product as used in humans?
Australia thinks it has the right solution here: https://www.amr.gov.au/about-amr/amr-australia/animal-health
How does the economics of shipping frozen and refrigerated lamb to Europe work out for this to make business sense?
There can also be other forces at play. For example, we have just transitioned from la Nina (which brings high rainfall to this part of the world) to el Nino (which brings drought), so a lot of farmers will be downsizing their flocks.
Changes in wool prices can also affect lamb prices.
EU law is pretty strict about labelling meat coming from the EU/outside the EU so that could be one way.