Reducing Age at First Calving in Heifers
How to get heifers to cycle at 15 months and calve by 24 months through target body weight, nutrition, and correct deworming.
The Cost of Late First Calving
In many North Indian dairy farms, heifers do not calve until they are 3 to 4 years old due to poor heifer nutrition. This represents a massive feed cost with zero return. The target should be age at first calving of 24-26 months, meaning the heifer must be bred and conceive by 15-17 months of age.
Nutrition for Rapid Weight Gain
Heifers start cycling when they reach 60% of their mature adult body weight—roughly 260-280 kg for crossbreds. Feeding heifers a high-protein starter feed (20% CP) and high-quality green fodder allows them to gain 650-700g daily, reaching breeding weight on time.
Regular Deworming Schedule
Parasites are the biggest barrier to heifer growth. Implement a strict deworming schedule: once every month for the first six months of life, and then once every three months until breeding. Combine deworming with mineral mixtures to promote skeletal growth.
Preparing the Ovaries for Puberty
As heifers reach 240 kg, their mineral requirements rise. A dedicated heifer mineral mixture rich in copper, cobalt, and manganese triggers the onset of puberty. Combine this with regular exercise and social contact with cycling cows to stimulate heat behavior.
Achieve first calving by 24 months by growing heifers to 270 kg by 15 months. Focus on high-protein starter feeds, deworm every 3 months, and feed trace minerals daily.