There are many sites with general recommendations for owners.
For Owners: In this poster they start to address the issue of 'prescribing pressure' i.e. owners asking for or demanding antibiotics from their veterinarian:
DON’T EXPECT ANTIBIOTICS
Do not demand antibiotics if your veterinarian does not prescribe them; in most cases it is not appropriate to use antibiotics in a precautionary manner. Unless your animal is seriously ill and is admitted to an animal hospital for care, always ask your veterinarian if the prescribed antibiotics are really necessary, or if
something else could be tried first.
WE are still searching for information directly pertinent to breeders and dog competitions...