Dietary nutrients, requirement and classification

1. Dietary energy and its partition within the animal

2. Dietary energy supplementation
• Dietary energy supplementation refers to the process of increasing the intake of calories or energy-providing
nutrients in one's diet. This can be done for various reasons, such as:
• Weight Gain: Individuals who are underweight or trying to gain muscle mass may increase their calorie
intake to promote weight gain. This is often achieved by consuming foods rich in carbohydrates, healthy fats,
and proteins.
• Increased Energy Needs: Athletes, manual laborers, or individuals with high physical activity levels may
require more calories to meet their energy demands. Energy supplementation ensures they have enough
fuel to sustain their activities and support recovery.

3. • Medical Conditions: Certain medical conditions or treatments, such as cancer, HIV/AIDS, or malabsorption
disorders, can lead to decreased appetite or increased energy expenditure. Dietary energy supplementation may
be prescribed to prevent malnutrition and support overall health.
• Nutritional Deficiencies: In cases where individuals have deficiencies in specific nutrients, such as vitamin
deficiencies, dietary supplementation may be necessary to ensure adequate intake and prevent health
complications.
• Methods of dietary energy supplementation can include:
• Food Choices: Consuming calorie-dense foods such as nuts, seeds, avocados, oils, whole grains, and dried fruits can
increase energy intake without significantly increasing food volume.
• Nutritional Supplements: Ready-to-drink shakes, powders, or bars specifically designed to provide concentrated
sources of calories and nutrients can be used to supplement meals and snacks.
• Meal Frequency: Increasing the frequency of meals and snacks throughout the day can help distribute calorie
intake more evenly and prevent feelings of fullness that may limit overall consumption.

4. Classify dietary nutrients