What is Grass Tetany?
- Grass tetany is a metabolic disorder caused by low magnesium levels in the blood. It typically occurs in the spring when beef or dairy cattle graze on fast-growing pastures that have low levels of magnesium.
What are the Signs?
- The transition from early to late onset and fatal magnesium deficiency can escalate rapidly. Early signs may be difficult to distinguish and terminal symptoms may appear before action can be taken. Therefore, symptoms should be addressed immediately. Cattle on lush spring forage in high-risk environments for grass tetany should be monitored regularly for symptoms including:
- Isolation
- Excitability or aggression
- Disorientation and muscle incoordination and/or twitching
- Paralysis and convulsion
- Death
What is the Solution?
- Prevention of grass tetany is often the best and most successful plan. Cattle grazing forage that may create a grass tetany-inducing diet should be offered cattle supplements that include high levels of magnesium and added sodium (often from salt). The added magnesium and sodium will help to facilitate passive transport and/or more successful use of the sodium-linked active transport system. Other considerations are to provide a supplemental source of energy such as molasses. The added energy in the diet may help the rumen microbes more effectively utilize the high rates of protein, aiding magnesium solubility.
What Kent Products Should I Recommend?
- Kent offers several cattle supplements to aid in the prevention of grass tetany. Loose minerals that provide magnesium and sodium like 7704/1244 Framework 365 Mineral MG and 7880 Framework 365 Mineral Performance MG are great choices. 4454/1065/6310 EnergiLass Super High-Mag 12 offers a great source of magnesium and energy. These nutritional options are ideal for producers to manage tetany risk with their herd.
What Should I Do If I Have More Questions?
- If you have any questions about grass tetany and how to help prevent it in beef and dairy cattle through proper nutrition, please reach out to your local Territory Sales Manager.