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Lecture 9

ANSC 101 Lecture Notes - Lecture 9: Vitamin A, Phos, Sulfur

Animal Science
Course Code
ANSC 101

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ANSC 101: Lecture 9 Feeding and Feedstuffs
Nutrient Classes
- Water
- Carbohydrates
- Fats
- Proteins
- Minerals
- Vitamins
- Most critical nutrient – can only live a short period of time w/o water
- Two types of water: free-choice water, and water from feed
- Involved in most body functions (metabolic reactions, assisting in transporting of other
nutrients, maintains normal body temperature, give body its physical shape (70 percent
of cells are water)
- Simple Carbs (non-structural)
Starches: polymer of Glucose units
Easily digested
Cereal Grains: eg. Corn, wheat, barley
- Complex Carbs (fiber, structural)
Cellulose and Hemicellulose
Non-ruminant enzymes cannot digest
Rumen microbes can digest and ferment to metabolites that ruminant animals
- Energy in feed and stored energy in body (adipose tissues)
- 2.25 times more energy per weight than carbs
- Adipose provides insulation
- Polyunsaturated
- Essential fatty acids – animal cannot make (linoleic and linolenic)
- Amino acid chains
- 20 common amino acids found in proteins
- Essential amino acids: animal cannot synthesize these, and must be provided in the diet
- Inorganic (no carbon)
- Calcium and phosphorous (bone and teeth)
- Sodium, potassium and chlorine – electrolytes
- Sulfur- ligaments and connective tissues
- Magnesium- bone and enzyme co-factor
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