Dear Shida
In case of B.Tech. Dairy Technology graduates, the prime recruiters are Dairy farms and firms that processes dairy products. Average starting salary is generally between 2-4 Lakh Rupees per year. In case of business venture, earnings will vary much. In such firms, one may take on responsibilities such as-

Dairy Plant supervisor
Dairy Plant Manager/Assistant Manager
Purchase Manager
Logistics and Distribution Manager
Quality Control Officer

Graduates may also find officer level job posts in Food processingand production firms too. Also, after following up B.Tech. Degree with M.Tech. Degree, one may also pursue a teaching career. It will also help one build a career in the Research and Developmentsector too!
Hope, this helps.
All the best.

Dear

Yes it's good but this technology demand and opportunities more in abroad .In India the opportunities and growth in this sector quite slow in compare for other Engineering branches.

So if you seriously taking this branches then think of your education abroad.

All the best