Agricultural Science Questions and Answers

A maintenance ration is the amount of feed needed to prevent an increase or decrease in the weight of the animal. The ration will just be enough to maintain the supplies of energy and protein for all metabolic activities such as respiration, blood circulation, digestion, locomotion, maintenance of body temperature.

A ration is defined as the feed that is regularly offered to or consumed by the animal. Diets are formulated to meet specific metabolic or physiological functions which include growth, lactation, reproduction, maintenance of pregnancy, egg laying, weaning, fattening etc

Malnutrition is said to occur when a ration (amount of feed provided to an animal per day) does not provide all the food nutrients(carbohydrate, protein,fats and oils, vitamins, minerals, water and other feed additives) in adequate quantities. Those nutrients wanting are said to be deficient which eventually results in nutritional disease.

The B-horizon, also called the sub-soil, is the next horizon immediately after the top soil. It is rich in minerals which are carried or leached down by percolating water.

The A-Horizon, also called the top soil, represents the surface layer of the soil profile. This horizon contains more organic matter than other horizons. The A horizon, the top soil, is the most weathered and leached of all the soil horizons.