ADSC 3300 Lecture 3: ADSC 3300-Lecture Notes 1:30
8 Mar 2017
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What does a nutritionist do: formulate diets to meet the nutrient requirements of animals, evaluate ingredients to determine the least costly way to meet those requirements. Macronutrients: carbs (lipids, proteins and amino acids, water. Essential nutrients (can"t make at all/or enough and must have an essential function: water, energy, essential amino acids, essential fatty acids, minerals, vitamins. The most important nutrient, but people don"t give it much attention. Participates in reactions: when your body metabolizes glucose, we consume oxygen and burn the glucose. 6 co2 and 6 h2o- this is called metabolic water. Physical properties of water: high specific heat, high heat of thermal conductivity, high heat of vaporization. Non-ruminant: no net absorption from stomach or duodenum, major sites: jejunum, ileum, cecum, and colon (small intestine) Ruminant: absorption like non-ruminant, rumen and omasum also important sites. Feed water: non-ruminant diets typically 8-12% moisture, ruminant diet (silage 50% moisture)
