Work out livestock feed ration instantly with clear inputs, formula shown and shareable results.
Sets dry matter intake as a percentage of body weight, then converts it to an as-fed ration using the feed's dry matter content.
Feed ration
Dry matter intake = body weight x intake percentage; as-fed = dry matter intake / dry matter fraction of the feed
About 2 to 2.5% of body weight for dry cows, rising to 3.5 to 4% in high-yielding dairy cattle.
Feeds are weighed wet, and silage at 30% dry matter needs more than three times the weight of dry hay for the same intake.