Iowa State beef cattle researchers used close-outs on 1836 pens of cattle, from producers who participated in the Iowa Feedlot Monitoring Program, to analyze factors affecting performance and profitability. Following are summary statements of the research:
- As initial weight increased, feed intake and average daily gain increased, but feed efficiency declined.
- Cattle started on feed in the winter had significantly improved feed efficiency compared to those started in the summer or fall.
- Cattle fed lower levels (less than 75%) of concentrate were the most profitable, those fed intermediate levels (75% – 85%) were the least profitable and those fed higher levels (greater than 85%) were intermediate in profitability.
- Fewer cattle per pen (less than 100 compared to more than 100 head) led to greater profit per head.
Following is the percentage of profit variability attributed to various factors: market price of fed cattle, 26%; feeder cattle purchase price, 25%; feed efficiency, 13%; corn price, 2% and average daily gain, 1%.
Source: Koknaruglu et al. 2005 Professional Animal Science 21:286. Submitted by Jim Neel, University of Tennessee.
