Source: Nutrient Requirements of Dairy Cattle. Sixth Edition, updated 1989, National Research Council, Subcommitte on Dairy Cattle Nutrition. National Academy Press: Washington DC. Values are presented as percent of calcium (by weight) per weight of dried hay (grams calcium per 100 grams dried hay). Highlighted values represent the average calcium content for the EARLIEST typical harvest of that hay (usually early vegetative stage). Generally, as grasses progress through their flowering cycle, their calcium content (and nutrient content) decreases. These are values representative for forages collected from across the country; precise values will vary somewhat between regions.

Forage	Calcium content (g Ca per 100 g dried hay)
Alfalfa	1.80 %
Bahia grass	0.28 %
Bermuda grass	0.40 %
Bluegrass (fresh, not dried)	0.50 %
Brome grass	0.32 %
Clover, aslike	1.29 %
Clover, crimson	1.40 %
Clover, ladino	1.35 %
Clover, red	1.53 %
Fescue	0.51 %
Oat Hulls (no Ca list for Hay)	0.15 %
Orchard Grass	0.27 %
Pangola Grass	0.58 %
Ryegrass	0.65 %
Sudan Grass (sorghum)	0.43 %
Soybean Hay	1.26 %
Sweetclover	1.27 %
Timothy	0.66 %
Wheat Hay	0.15 %

Hay Water Treats Pellets
Pellet Brands Vegetables Commercial Treats

Calcium Content of Selected Forages