Blood glucose Muscle glycogen
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第11页,共50页。
Carbohydrates
Carbon:Hydrogen:Oxygen = 1:2:1 ratio
Classifications
Monosaccharides - Glucose, Fructose Disaccharides - Sucrose, Maltose, Lactose Polysaccharides - Starch, Cellulose
Water
Intake increased by:
Warm to hot temperatures
High protein levels High salt levels
High fiber levels
High dry matter intakes
7
第8页,共50页。
Water
Normal losses:
3
第4页,共50页。
Water
Sources
Drinking water Moisture content of feeds
As-fed(实样的) feed intake
Dry matter feed intake
Metabolic water
Water released through chemical reactions at the cell level
18
第19页,共50页。
Dietary Limiting Amino Acid
The essential amino acid that is present in the lowest quantity in the diet when expressed as a percentage of the animal’s amino acid requirement