Compare the Following Sample Forages
Forages vary in price, dry matter and quality, as noted in the sample forages in Table 1. Creating a balanced, low-cost ration can be done when the nutrient analysis is known and time is taken to work through the available options.
At first glance, the $50/ton savings for the grass hay compared to alfalfa appears to be a solid economic decision. However, alfalfa is a better option if protein is the needed nutrient. Comparing other forages, like corn silage, can also be done to create a balanced, least-cost ration. By inventorying the feed on hand and analyzing the feed, producers can determine what, if any, additional feedstuffs are required.
TABLE 1. SAMPLE FORAGES
Cost per Ton
($/T) | Percent
Dry Matter
(%DM) | Percent
Crude Protein
(%CP) | Percent Total
Digestible Nutrient
(%TDN) | Cost per pound
of Dry Matter
($/Ton DM) | Cost per pound
of Crude Protein
($/Ton CP) | Cost per pound
of TDN
($Ton TDN) |
|---|
| Grass Hay | $150.00 | 90% | 5.5% | 50% | $166.67 | $3030.36 | $333.34 |
| Alfalfa | $200.00 | 85% | 16.0% | 54% | $235.29 | $1470.56 | $435.72 |
| Corn Silage | $70.00 | 35% | 8.5% | 72% | $200.00 | $2352.94 | $277.78 |
SAMPLE CALCULATION
To make feedstuff comparisons, use the following formulas, with the Grass Hay data used as an example:
Step 1
- Cost per Ton ÷ Percent Dry Matter = Cost per Ton Dry Matter
- Example: $150 ÷ 0.9 = $166.67/Ton
Step 2
- Cost per Ton Dry Matter ÷ Percent Crude Protein = Cost per Ton Crude Protein
- Example: $166.67 ÷ 0.055 = $3030.36
The Bottom Line
Before buying "cheap" feed, ensure it will be cost-effective when creating balanced rations this winter. By inventorying the quantity and quality of feed harvested this summer, future purchases can be planned and budgeted for, thus allowing the creation of least-cost, balanced rations for the herd throughout all reproductive stages this winter.
Source : sdstate.edu