Increased milk production by 9%, reduced feed use by 11.4%, and reduced electricity costs by 7.7% An independent study conducted by alltech e-co2 , a global leading environmental consultant within the animal health and nutrition industry, showed that cows on a dairy farm in the u.K. Increased milk production by 9% after installing uni-light lighting system while reducing electricity costs by 7.7%, food concentrate by 11.4%, and carbon output by 3.9%.This translates to an increase in production o£263 per cow and a decrease in 4000 kwh per 1m litres and 40000 kg concentrate equivalent/1m litres.