12/05/2021
Pretty cool research! Horses need space 🐎
Group turnout provides important socializing opportunities for horses, particularly those that are primarily stalled. However, injuries can occur during group turnout, which could partly be due to the paddock size. To investigate appropriate paddock sizes for group turnouts, 12 horses from an established herd were divided into groups of 4, stalled for 24 hours, and then turned out for 1 hour into one of three differently sized paddocks: 3,681, 2,831, and 1,981 square feet per horse. Groups rotated through paddocks, being housed in one paddock per day. Blood was sampled for cortisol concentrations, a stress hormone, before, during, and after turnout. Counts of agonistic behaviors (chasing, contact biting, and kicking) and low-level threats (pinned ears, tail swishing, and bite and kick threats) were recorded.
When turned out in pens that provided 3,681 square feet per horse, horses exhibited reduced plasma cortisol concentrations during and after turnout. Horses in pens providing 1,981 square feet per horse exhibited greater agonistic and low-level threat behaviors than horses in larger pens.
These data provide insight into appropriate pen sizes for horses from established herds. Providing at least 3,681 square feet per horse may reduce stress and the chance of injury in horses during group turnout. For more information on this research, conducted by The Ohio State University, visit https://doi.org/10.1016/j.jevs.2020.103366