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cows eating grass

Assessing Potential Sulfur Intake Excess

The assessment of sulfur intake excess in beef cattle requires estimation of total sulfur concentration (TSC) to determine if there could be a hazard.

The maximum tolerated level is 0.4% sulfur as dry matter intake (DMI).

It is important to account for all potential sulfur sources from feed and water. TSC is expressed as % sulfur of DMI, and is estimated by adding the sulfur contributed by the water (%SH2O) to sulfur contributed by the feed or forage (%SFF), all on a DM basis.

Our sulfur calculator can complete this calculation.


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Fort Collins Diagnostic Laboratory

FedEx/UPS Shipping Address (physical address):
2450 Gillette Drive
Fort Collins, CO 80526

USPS Mailing Address:
200 West Lake Street
1644 Campus Delivery
Fort Collins, CO 80523-1644

(970) 297-1281

(970) 297-0320

Rocky Ford Diagnostic Laboratory

27847 Road 21
Rocky Ford, CO 81067​

Phone: (719) 254-6382
Fax: (719) 254-6055​

Western Slope Diagnostic Laboratory

3164 B 1/2 Road
Western Slope, CO 81503

Phone: (970) 243-0673
Fax: (970) 242-0003​​​​​​​​​​​​