Calcium soap is the product of saponification reaction between fatty acids and calcium ions. Calcium soap in the form of stearate is widely used as hardening agent for mineral oil, mould-releasing agent for plastic, in injection and extrusion products and in polyolefin industry. In the livestock industry, calcium soap from mixed fatty acids is commonly added to animal feed. It is known as “By-Pass Oil” and cpecially fabricated as oils and fats replacer in animal feed. Addition of supplementary energy containing material such as oils and fats is necessary to enhance milk production and other activities lactating livestock. However, oils or fats per se have negative effect on carbohydrate, digestion in ruminants (Ward et al., 1997; Brooks et at., 1954 and Devandra et al., 1974) and therefore modified fats or oils in the form of calcium soap are beneficial replacer.

Main Researcher: Ainie, K