What is the term for the ratio of the amount of feed input it takes to produce a set quantity of animal product output (such as a unit of weight gain or a dozen eggs)

Answer: The term is feed conversion ratio/rate (F. C. R)

Explanation:

Feed conversion ratio which is sometimes also called feed conversion rate is a rate determinant of the effectiveness with which livestock bodies systems usually convert animal feed into output. Output in this case may be milk for diary animals, eggs for poultry etc.

In simpler terms, feed conversion rate/ratio (FCR) is the amount of units of animal feed that an animal uses to make/produce one unit of product. For instance, a herder may seek to find out the quantity of feed it may take to grow one kilogram of beef. The knowledge the farmer seeks for is feed conversion ratio

Feed conversion ratio

Explanation:

This is the amount of feed needed for the growth and development of the animal and how it's utilized. Some animals require more food before appreciable weight gain or other outputs.

The feed conversion ratio is indirectly proportional to the growth and efficiency. This means the higher the feed conversion ratio the lower the efficiency and vice versa.