Vitamin K3 (Menadione) Feed Grade Supplier South Africa

What is Vitamin K3 (Menadione)?

Vitamin K3 (menadione) is a synthetic provitamin K that is converted in animal tissues to the biologically active Menaquinone-4 (MK-4). The most common feed-grade form is Menadione Sodium Bisulphite (MSB), a water-soluble, relatively stable white crystalline powder with a menadione content of approximately 50%. It is the most widely used form of Vitamin K in livestock and poultry feed.

Role in Animal Nutrition

Vitamin K is essential for the post-translational carboxylation of glutamic acid residues in clotting factors (II, VII, IX, X) and bone proteins (osteocalcin, matrix Gla-protein). Deficiency causes haemorrhagic disease, impaired clotting, and skeletal problems. In poultry, vitamin K deficiency leads to haemorrhagic syndrome with blood spots in meat, reproductive failure, and embryonic mortality. Feed-grade vitamin K3 supplementation ensures adequate K activity across all species when natural dietary sources (green forages, K1) are limiting.

Supply & Packaging

Terracore Chemicals supplies Menadione Sodium Bisulphite (Vitamin K3) feed-grade in 25 kg bags from certified manufacturers across South Africa. Full CoA, safety data sheets, and regulatory support documentation are provided with each batch to our premix and feed mill customers.