As the Kcet cutoff  keeps on changing each year depending upon various factors such as :

• Previous year KCET cutoff trends

• Total number of applicants

• Total number of seats

• Difficulty level of the examination

As you've mentioned that your ranking is 6500 in kcet 2021, with this rank your chances of getting govt veterinary seat are low, Because generally cutoff for veterinary seat through kcet is below 2000. However you can get bsc agri seat in good college with your ranking. Wait & try for all rounds.

And For more information about Veterinary colleges in Karnataka, go through this link:

https://medicine.careers360.com/colleges/list-of-veterinary-science-colleges-in-karnataka