Hey!

Following points will help in clearing your doubts:

• Dairy technology is still offered by Agricultural Universities as a part of the B.VSc, (Bachelor of Veterinary Science and Animal Husbandry). There are several institutes offering exclusive diploma, undergraduate and postgraduate courses in Dairy technology.
• Many general universities also offer dairy science as vocational subject at the BSc level. Dairying is also available as a vocational subject for the 10+2 level education.
• Comprises of three basic areas :Dairy Engineering, Dairy Chemistry, Dairy Bacteriology. 
• Specialisation in the specific or related area like Veterinary Science, Dairy Technology or Engineering is a prerequisite for entry into this field.  
• Courses are available at the diploma, graduation, postgraduate and doctoral levels.
• The diploma and degree courses require candidates who have passed the 10 + 2 examination, with Chemistry, Physics, Mathematics and English or Physics, chemistry, Biology or Agriculture with a minimum aggregate of 50%. The diploma courses of two years duration include Indian Dairy Diploma (IDD) and National Dairy Diploma (NDD).
• At the graduation level, B.Tech./B.Sc. in Dairy technology or Dairy Science is available. After graduating, a Master's programme in Dairying (M.Tech in Dairy Technology/ MSc Dairy Science), or related areas such as animal genetics and breeding, livestock production, Animal biochemistry, Animal bio-technology or in fields of food technology and preservation is also possible. 
• Dairy Diploma course is of two years duration for lower level technical positions. The B.Tech / B.Sc in Dairy Technology is a four years course. The B.VSc, (Bachelor of Veterinary Science and Animal Husbandry) is also a four years course. M.Tech in Dairy Technology/ MSc Dairy Science is of two years duration. 
• Selection to the graduate course is on the basis of an All India Entrance Examination in Physics, Chemistry and Maths of 10+2, common to other agricultural and animal science courses.
• All India Common Entrance examination (AICEE) for admission to first year Bachelor of Veterinary Science (BVSc) & Animal Husbandry (AH) degree course for filling up 15% of the total number of seats of each veterinary college of all states. This is usually held in the month of May.
• For admission to masters degree programme, an All India Entrance Examination is conducted by the Indian Council for Agricultural Research (ICAR).

Best wishes!