Concept:Feed utilization in farm animals follows a fixed biological order: food is taken in, broken down, absorbed into the blood, and then used by the body cells.
Explanation:The process starts with ingestion, which is the act of taking food into the mouth through eating or drinking.
This is followed by digestion, where the ingested food is broken down both physically and chemically into simple, soluble substances that the body can use.
Next comes absorption, during which these digested soluble nutrients pass through the walls of the intestines and enter the bloodstream for transport.
The final stage is assimilation, where the absorbed nutrients are taken up by the cells and used for energy, growth, and repair of body tissues.
Therefore, the correct sequence moves from ingestion through digestion to absorption and finally to assimilation.
Answer:Option C: ingestion-digestion-absorption-assimilation.