... additives directly, and also for high-grade feed additive. Fed with Spirulina feed on shrimp, juvenile abalone, compared with ... lead to disease.3. Spirulina contains many essential trace elements, calcium, magnesium, sodium, potassium, phosphorus, iodine, selenium, iron, ... Spirulina contains a high γ-linolenic acid, can promote calcium absorption and improve immunity, prevent metabolic disorders and ...