... can make higher egg production rate, it can also make chicken skin turn yellow, deepened the yellow color of egg production ... foods such as soy, beef, eggs.Proteins are the basic elements of life-sustaining.Spirulina is rich in β carrot element, ... may lead to disease.3. Spirulina contains many essential trace elements, calcium, magnesium, sodium, potassium, phosphorus, iodine, selenium, iron, copper, ...