This same study also found that a lactate value greater than 6.6 mmol/L had a high predictive value of gastric necrosis and poor outcome. 11 Initial measurement of lactate should not be used to recommend euthanasia. It is more important to follow changes in lactate value with treatment than to make inferences based on a single value. Many animals with a high initial value respond favorably to treatment, as evidenced by a decrease in lactate value, and their prognosis improves.
Definition of energy efficiency: Percentage of total energy input to a machine or equipment that is consumed in useful work and not wasted as useless heat.
Ecological efficiency is a measure of the amount of energy that is produced by one trophic level and is incorporated into the biomass of the next (higher) trophic level.