Harvest

Comparison of the nutritional composition of soybean meal from different countries

Mercedes Gonzalez & Fernando Diaz

Soybeans are a widespread crop worldwide, both as food for human consumption and as livestock feed; they are thus a common ingredient in dairy cattle rations. One of their most common uses is as meal usually after extracting the oil from the beans, constituting an important source of protein in rations for dairy cattle.

Raw soybeans contain trypsin inhibitors which are considered anti-nutritional factors since trypsin participates in protein digestion, and to be able to digest the protein in the soybean meal more effectively they need to be inactivated by heat treatment.

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Handling soybeans

Extruded vs. solvent-extracted soybean meal in early-lactation diets

Andrés Haro & Fernando Diaz

The use of extruded soybeans (ESM) has been adopted by dairy farms because of high nutritional value. It is an excellent source of protein, and particularly high in the essential amino acid lysine. Solvent-extracted soybean meal (SSM) has quite a stable nutrient composition (view table), with higher protein concentration (54.3% DM) and lower in fat (1.3% DM), compared to the ESM (50.1% protein and 8.7% fat). In addition, ESM has higher bypass protein content of 49.5% whereas SSM has only 29.9%.

Nutrient composition of solvent-extracted soybean meal

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