Welcome to Top Country News and Information. Here you will find informative articles, Invitations and latest news. Use our RSS button above to keep up to date with the latest articles publised by Top Country.

Understanding Big Head

Grasses containing oxalates include: buffel grass, kikuyu, setaria, para grass, pangola grass, signal grass, guinea grass, and purple pigeon grass. Under rapid growth conditions (i.e. following heavy rainfall), grasses may exceed 6% oxalates which is enough to bind the entire calcium content of the grass.

Symptoms may include:

  • Lameness and stiffness of the joints,
  • Swelling of facial bones,
  • Weight loss,
  • Rough coat,
  • Muscular weakness (preferring to canter than trot),
  • Higher susceptibility to avulsion of ligaments and fracturing,
  • Dirt eating and chewing problems (due to loosening of teeth).


While the swelling of the facial bones is a common symptom, it is not found in all cases of big head. It can take 4 to 12 months to re-mineralise bones but the big head appearance may not change.

The treatment for big head aims to correct the calcium: phosphorus imbalance & daily supplementation is the most effective method to avoid and treat big head.


Author: Elsie Dodd

Tags: PASTURE HORSES Supplements bighead green feed

Top Country Livestock Nutrition
Your Partners In Nutrition


  • Address
    44484 Warrego Highway,
    Roma QLD 4455
  • Phone
    +61 (0) 7 4622 8330


  • Address
    Corner of Willson Street/Mundubbera-Durong Road,
    Mundubbera QLD 4626
  • Phone
    +61 (0) 7 4165 4943