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