Hi Ankit, if you are appearing for class 12 exams this year then you are eligible to appear in the Pre - Veterinary Test (PVT), 

the eligibility criteria as per the DAVASU admissions 2018 prospectus page 11(point 10) is this

• Candidates appearing in Intermediate Examination of 2018 are also eligible to appear in the Pre - Veterinary Test (PVT), however, their admission will also be governed by the above cited rules.

for more information plaese refer to this link- http://www.upvetuniv.edu.in/wp-content/uploads/2018/01/Prospectus-for-admission.pdf