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Manufactured by KLC Farms Sauk Centre, MN Roasting Quality Beans for Dairy, Beef, Hogs & Poultry Since 1988 (320) 352-3326 or 1-877-738-2326  Email: KLC Farms

The following information is an excerpt from:

"Evaluating the Quality of Roasted Soybeans"
Larry D. Satter, Jih-Tay Hsu and Tilak Raj Dhiman
U.S. Dairy Forage Research Center
USDA - Agricultural Research Service
Madison, WI

"Large Increases in milk production are possible when early lactation cows are fed properly heated soybeans. We conducted a large scale lactation study to measure milk production when soybeans were heated to 295ºF and steeped for 30 min (Faldet et al., 1991) Forty-six multiparous Holstein cows were fed one of three total mixed diets from 15 to 119 d postpartum with alfalfa silage as the only forage. Each diet contained 50% forage and 50% concentrate on a DM basis. Diets were formulated to be isonitrogenous by replacing corn and solvent soybean meal with raw soybeans or heat-treated soybeans. The proportion of protein supplement in the diet on a DM basis for the three groups was 10% soybean meal, 13% raw soybeans, or 13% heat-treated soybeans. The soybean meal diet was fed to all cows during week 1 and 2 postpartum for covariate adjustment of dry matter intake and milk production. Intake of DM was similar across treatments. Feeding heat-treated soybeans supported more milk (9.9 lbs/d), 3.5% FCM (8.8lbs/d), and milk protein (.2 lbs/d) than soybean meal or raw soybeans. Milk fat percentage was not altered by treatments. However, milk protein percentage was depressed in cows fed heat-treated soybeans compared with soybean meal (2.85 vs. 2.99%, respectively).
Figure 1 contains a plot of the unadjusted mean daily milk production for cows in this experiment. Cows fed the heat processed soybeans achieved a higher peak milk production and reached the peak 2-4 weeks later than the soybean meal group or the unheated soybean group."

"A large number of lactation studies have been conducted with heat processed soybeans and there is little doubt that well roasted soybeans can be a very effective supplement for lactating cows, particularly when alfalfa silage or hay are the principal forage."

Cows fed finely ground, roasted soybeans excreted 0.37 ounces of soybean particles per pound of fecal dry matter and produced 81.4 pounds of milk per day. On the other hand, cows fed roasted soybeans in half and one-fourth sizes excreted more soybean particles - 1.17 ounces of soybean particles per pound of fecal dry matter - but producesd 85.1 pounds of milk per day - almost 4 pounds more than cows fed finely ground, roasted soybeans.

Although finely ground, roasted soybeans resulted in less soybean particles lost in the feces, these soybeans were degraded more rapidly in the rumen than soybeans in half or one-fourth sizes. Thus, the protein in finely ground, roasted soybeans was less available to the cow, which was reflected in lowered milk production.

Bottom line: Feed roasted soybeans split in half or one-fourth pieces for optimal milk production.