I am the student of BSc.Ag from the private college who has affiliated by IGKV Raipur C.G. than what I eligible for the JRF PG entrance exam

Yes, you can apply for the exam. ICAR's JRF is an All India basis examination for admission to Masters Degree Programmes in different State Agricultural Universities, Central Universities and Deemed Universities conducted by Indian Council of Agricultural Research (ICAR), New Delhi.