In dairy farm management,we deal with processes and systems that increase yield and improve quality of milk. Which of the following statements is incorrect in this regard?

• A
  Milk yield is primarily dependent on the quality of breeds,therefore selection of high-yielding breeds is very important.
• B
  The quality and quantity of fodder provided to cattle do not contribute much to the milk yield.
• C
  Cleanliness and hygiene of both the cattle and handlers are of paramount importance during milking,storage,and transport of milk and its products.
• D
  Regular inspections and visits by a veterinary doctor with proper record-keeping help identify and rectify the problems of cattle as early as possible,thus ensuring a proper milk yield.