Rumen health is fundamental to cattle welfare: subacute ruminal acidosis (SARA) is endemic in high-producing dairy cows and feedlot cattle, causing pain, systemic inflammation, and secondary health problems.
SARA represents a chronic welfare burden that is difficult to detect because affected animals do not show obvious pain signs. However, the systemic consequences - particularly laminitis - cause significant ongoing pain that is measurable through lameness scoring, altered weight distribution, and pain responses. The connection between diet management and laminitis is well-established: excess fermentable carbohydrate causes rumen acidosis, which produces histamine and triggers vascular changes in the hoof laminae, causing the excruciating inflammation of laminitis. Prevention through nutrition management is entirely achievable: appropriate forage to concentrate ratios, gradual dietary transitions at diet changes, and TMR management that prevents selective feeding dramatically reduce SARA incidence. The welfare case for investing in nutritional management is clear: it prevents suffering from multiple serious conditions simultaneously.