Note to readers, attached is the complete final report for FNE02-421.
The results of this project suggest supplementing half as much energy supplement in late lactation (> 9 weeks). Assuming a 16 week lactation and a whole corn cost of $7 per hundred weight, this would save approximately $37 per head over the course of the lactation. However, the increased protein supplement in early lactation would increase feed costs by approximately $60 per head over the course of the lactation. These figures are based on supplementing with whole corn and soybean meal. Therefore, more economically sound supplementation strategies, using less expensive feeds, are possible. The added returns of balancing MP and ME are difficult to quantify. However, improvement in milk yield, animal health, as well as improved reproduction in the following breeding season could result.