This study was conducted in an attempt to repeat the findings of the previous project entitled ‘Physiology of Heat Stress in Cattle and Sheep’ that reported a weight advantage of cattle supplemented with water based electrolytes.

This study was conducted in an attempt to repeat the findings of the previous project entitled ‘Physiology of Heat Stress in Cattle and Sheep’ that reported a weight advantage of cattle supplemented with water based electrolytes. The project aimed to measure any animal performance and/or welfare benefits to cattle and sheep during and post electrolyte replacement therapy. The report found no evidence that conclusively supported the supplementation of electrolytes on board livestock vessels. However, the study identified heat stress thresholds for heavy rams, wethers, ram lambs, and pregnant Friesian heifers.