Hii!
The eligibility criteria for ICAR AIEEA PG states that the candidate must have completed graduation degree with minimum 60% marks for general category candidate, from a recognised university with a relevant subject. So, yes. You can apply for the program. For preparation, try solving previous year question papers along with the study of your graduation syllabus. Read some current affairs on the animal biotechnology field and keep yourself updated. In order to know the exam pattern, registration details, and more information, refer the link given below -

https://www.google.com/amp/s/university.careers360.com/articles/icar-aieea/amp

https://www.google.com/amp/s/university.careers360.com/articles/icar-aieea-exam-pattern/amp

Hope this helps.
Good luck!