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Introduction to Nutrition

by: Ashley Williams

Introduction to Nutrition ANSC 231- 02

Ashley Williams


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About this Document

These notes cover Chapter 1 & 2 in the book and also cover the lecture notes for the intro to nutrition.
Principles of Nutrition
Dr. Amy Radunz
75 ?




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This 2 page Bundle was uploaded by Ashley Williams on Tuesday September 20, 2016. The Bundle belongs to ANSC 231- 02 at University of Wisconsin - River Falls taught by Dr. Amy Radunz in Fall 2016. Since its upload, it has received 3 views. For similar materials see Principles of Nutrition in Agricultural And Food Systems at University of Wisconsin - River Falls.

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Date Created: 09/20/16
Introduction to Nutrition What is a Nutrient? A nutrient is a chemical element or compound that is essential for supporting  normal development, maintenance, growth and reproductive functions More than 40 different nutrients are required in the diet of MOST animal species  for normal life processes. What are the six classes of nutrients? 1. Water 2. Proteins/ Amino Acids 3. Carbohydrates 4. Lipids 5. Vitamins 6. Inorganic elements These all support cellular needs. Organic molecules produced by plants provide the nutrients for animals, certain  plants and microorganisms. What is Nutrition? Nutrition encompasses all processes of obtaining nutrients, digesting, absorbing,  and assimilating them. Why is nutrition important? 1. It can affect the production of meat, milk, and fiber 2. It can affect work performance 3. It can affect the overall appearance of the animal 4. It can affect the animal’s health. (Disease Prevention) A problem is feeding the world as the population grows because there is limited  space as more and more people begin to move. Advances in nutritional science have resulted in:  Continuous improvements in efficiency of animal production and human  welfare Number 1 cost in a food animal operation = FEED Prehension: The way an animals obtains food  This could be via mouth, tongue, lips or beak. Mastication: Mechanical breakdown of food  Chewing; Grinding food with teeth Digestion: Chemical breakdown of food outside of the body  GI tract o Known to be “outside” of the body because it is a non­sterile  environment that carries food through the body on one track from  mouth to anus Absorption: Uptake of nutrients into the body Metabolism: Net of catabolism and anabolism  Catabolism: breakdown of tissue  Anabolism: Buildup of tissues Food: Edible material that provides nutrients Feed: food that animals eat Feedstuff: Materials used as feeds  Soy bean meal, Hay, Corn, Etc. Diet: Mixture of feedstuffs provided to animals Ration: The daily supply of food an animal receives Nutrition Requirements  Plants o Take up nitrogen → in the form of nitrate or ammonia o Require a large number of inorganic elements o Nutrients needed can be obtained mostly through the soil or  photosynthesis  Animals o Nutrient needs vary between species and age groups, productivity  level/type, and GI tract


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