Hello!
Top colleges for diary technology in India are:
1. IGNOU Delhi - Indira Gandhi National Open University
2. NIMS University, Jaipur
3. Sheth MC College of Dairy Science, Anand
4. Anand Agricultural University, Anand
5. NDRI Karnal - National Dairy Research Institute
6. SHUATS Allahabad - Sam Higginbottom Institute of Agriculture Technology and Science
7. College of Dairy Technology, Udgir
8. Parul Institute of Technology, Vadodara
9. Kamdhenu University, Gandhinagar
10. College of Agricultural Engineering, Acharya NG Ranga Agricultural University, Bapatla
For further information, please refer to this link:

https://engineering.careers360.com/colleges/list-of-dairy-colleges-in-india

Best wishes