Question

In food and digestion ecd and eci how are corelated

Answer 1

ECI, also termed "growth efficiency") is an index measure of food fuel efficiency in animals.The ECI is a rough scale of how much of the food ingestedis converted into growth in the animal's mass. It can be used to compare the growth efficiency as measured by the weight gain of different animals from consuming a given quantity of food relative to its size.
The ECI effectively represents efficiencies of both digestion (approximate digestibility or AD) and metabolic efficiency .

And , ECD is termed as efficiency of conversion of digested food .

The formula for the efficiency of food fuel is thus:

ECI =AD +ECD