The age of the first calf of a hybrid heifer is:

Correct option is B

The correct answer is (b) 24 to 30 months

Explanation:

• The age at first calving is the period between the birth of a heifer and her first parturition.
• Hybrid or crossbred heifers generally reach sexual maturity earlier than indigenous breeds.
• A well-managed hybrid heifer typically produces her first calf between 24 and 30 months of age.
• Early calving is economically beneficial as it reduces the non-productive maintenance period.
• Factors such as nutrition, breed composition, and environmental conditions influence this timeline.

• Indigenous Indian cattle (Desi breeds) usually have a later age at first calving, often ranging from 36 to 45 months.
• Optimal feeding during the growing stage is crucial to achieving early maturity in heifers.

• This is a very early range and is rarely achieved in general field conditions for cattle.
• Mostly applicable to high-performing exotic breeds in highly controlled environments.

• Typical for many local Indian breeds like Sahiwal or Gir when not provided with intensive management.
• Considered late for hybrid varieties.