Weaning weight and weaning rate (number of calves weaned from the total number of cows exposed) determine effective weaning weight (total pounds of calf weaned divided by total cows exposed). Thus, a herd of 100 cows exposed in the summer of 2021 weaning 90 550-lb calves in the fall of 2022 will yield a total of 49,500 lb at weaning or 495 lb weaned per cow exposed. At an annual cost of $750 to keep a cow, the feeder calf price required to breakeven would be $151.51/cwt ($750/495 lb).
Strategies to cope with effects of drought or high input costs in 2022 were developed using performance scenarios simulated at various annual cow costs. Figure 1 represents the results of these simulations. Operations weaning 500- or 562.5-lb calves at 80% or 90% weaning rate were simulated over a range of annual cow costs from $750 to $1,750. Weaning weight and rate values chosen represent a difference of 12.5% within each set (562.5 is 12.5% greater than 500 lb and 90% is 12.5% greater than 80%). Breakeven feeder calf prices were determined as illustrated above (annual cow cost divided by weaning weight * weaning rate).
As expected, breakeven feeder calf price responds linearly to increases in annual cow cost. When reviewing Figure 1, it is evident that the rate of response by breakeven feeder calf price is lower when performance (weaning weight or weaning rate) is better. At 562.5 lb weaning weight with 90% weaning rate, an increase in annual cow costs of $10/cow demands an increase in feeder calf price of $2.00/cwt to breakeven. At 500 lb weaning weight with 80% weaning rate, a $10/cow increase in annual cow cost demands an increase in feeder calf price of $2.50/cwt to breakeven. Herds with 562.5 lb weaning weight at 90% weaning rate at annual cow costs of $900/cow require $177.78/cwt to breakeven while herds with the same performance but with annual cow costs of $1,000/cow require $197.53/cwt to breakeven; a difference of $19.75/cwt. Based on observations made above, the former herd example might represent a profitable herd in 2022 but not the latter.

Figure 1. Feeder calf price required to breakeven with annual costs ranging from $750 to $,1750/cow at 500 or 562.5 lb weaning weight and 80% or 90% weaning rate. Note: Line for 500 lb at 80% weaning rate and that for 450 lb at 90% weaning rate (middle lines) overlap completely.
Using the line representing herds that wean 500 lb calves at 80% weaning rate in Figure 1 demonstrates the importance of maintaining performance considering high annual cow costs. In that simulation, herds with annual cow costs of $900/cow require $225/cwt to breakeven while those with annual cow costs of $1,000/cow require $250/cow to breakeven. This difference is $25/cwt. If feeder calf prices are expected to range between $180 and $190/cwt for 500-lb calves, even when considering a price slide for the lighter calves in the example, profitability for herds with poorer performance in 2022 may not be achievable.
Similarly, at a given annual cow cost, herds with better performance can withstand increases in annual cow cost better than those with poorer performance. At $1,000 annual cow cost, herds with 562.5 lb calves weaning 90% of cows exposed require $197.53/cwt feeder calf price to breakeven. At the same annual cow cost, herds weaning 500 lb calves at the same weaning rate require $222.22/cwt feeder calf price to breakeven. This represents a difference of $24.69/cwt for a 12.5% change in weaning weight. The same increase ($24.69/cwt) in feeder calf price is required to breakeven a 12.5% change in weaning percentage (from 90% to 80%) for a herd with $1,000 annual cow cost weaning 562.5-lb calves.
In contrast, at $1,000 annual cow cost, reducing weaning rate from 90% to 80% for herds weaning 500-lb calves or reducing weaning weight from 562.5 to 500 lb for herds with a weaning rate of 80% results in an increase in feeder calf price of $27.78/cwt to breakeven.
Both weaning rate and weaning weight have the same effect per unit change on breakeven feeder calf price. Yet, for herds with poorer performance the size of this effect is greater.
Although 2022 is likely not a year when costs may be reduced, various observations can be made from these simulations:
- For individuals who know their annual cow costs are below $1,000/cow and with weaning weights and rates expected above 500 lb and 85%, respectively, investing extra dollars in 2022 to keep herd size intact is a viable option.
- Strategically focus on maintaining calf health, particularly in the early weeks after calving and immediately before weaning.
- Consider strategies that enhance calf growth such as use of implants, particularly if access to quality pastures and creep feeding are management options.
- Because of the significance of weaning rate on breakeven feeder calf price, ensuring reproductive success during the 2022 breeding season is also recommended.
Source : unl.edu