Explanation:
(a) of the term malnutrition in farm animals;
A state caused by feeding farm animals with inadequate or excess/imbalance nutrients
OR
It may also occur when an animal is unable to use available nutrients due to ill health or there is an imbalance in the nutrients
OR
Feeding animals with diets that do not contain all necessary nutrients in the right proportion


(b) Difference between maintenance and production rations;

Maintenance ration is given to farm animals just sufficient/enough to maintain/sustain the basic/basal metabolic functions of the body
OR
The type of ration given to a farm animal to maintain a constant live weight
while/but/on the other hand/whereas
Production ration is given to farm animals to enable them produce either egg, meat, milk, offspring, hair/fur/wool/work
The amount of feed given to a growing, working or producing animal over/above its maintenance needs.