By Kim Ricardo
The future of any cow herd begins with its replacement heifers. In today's economy, producers can expect to invest approximately $2,800 to retain and develop replacement females. Because of this significant investment, it is critical that heifers become pregnant and successfully raise a calf year after year. Even with historically strong cattle prices, culling a first-calf heifer due to reproductive failure rarely allows producers to recover the costs associated with her development. Therefore, implementing a heifer development program that balances cost efficiency with reproductive performance is essential for improving cow longevity, reducing replacement rates, and maximizing profitability.
Nutrition Considerations
Feed costs represent the largest expense in cow-calf production, making nutrition one of the most important management decisions in any heifer development program. Many producers assume that large, fleshy heifers will become the most productive cows. However, this perception is often based on the belief that bigger cows wean heavier calves. While heavier calves can increase revenue, heifer development strategies must ultimately align with the production environment in which those females will spend their productive lives. When discussing heifer development, producers often refer to a "target weight," which is expressed as a percentage of a heifer's expected mature body weight. Historically, recommendations have emphasized developing heifers to approximately 65% of mature body weight at breeding and 80% of mature body weight by calving. While these benchmarks have been widely adopted, it is possible to overdevelop replacement heifers. Overconditioned heifers often exhibit excessive fat deposition along the topline, around the tailhead, brisket, and, in some cases, within the udder. Excessive body condition can negatively affect fertility, subsequent reproductive performance, and milk production. Furthermore, overfeeding heifers during development may contribute to structural and metabolic issues later in life.
Source : sdstate.edu