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What is nutrition
numerous chemical reactions and physiological processes which transform food into body tissues and activities
- ingestion, digestion and absorption of nutrients
- transport of nutrients to body cells
- removal of waste
Why is nutrition important to producers?
- It's involved in every aspect of life.
- It accounts for over half the cost of raising an animal.
What is the most limiting nutrient?
Nutrient cycles of plants require:
a large number of inorganics: ammonia, nitrate, CO2, minerals
Nutrient cycles of animals require:
pre-formed compounds: from feed and microbial processes
Relationship between socio-economic status and meat consumption
meat consumption goes up with economic increase, but can peak at a certain point and reduce slightly
Functional foods are
foods that provide more than your normal nutrition (have something added to it)
chemical in the diet of either an element or coumpound
- reproduction, growth, lactation, and maintenance of life processes
Types of nutients
- Essential-can not be made in sufficient amounts
- Nonessential- can be made by body
Classes of nutrients
- Water- most important
- Carbohydrates & fats- energy
- Proteins- provide some energy
- Minerals and Vitamins- tace nutrients
Functions of nutrients
structure, energy, regulation (homeostasis), production
Chemical composition of an animal
water, protein, fat and ash
chemical composition of a plant
water & dry matter: inorganic-minerals, organic-carbs, lipids, proteins, nucleic acids, organic acids, vitamins