BIOL-1506EL Lecture 10: Day 10 - Lipids
27 Jun 2018
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Day 10 - Lipids
-Hindgut fermenters are much less efficient at digesting cellulose, compared to foregut
fermentors
-this is why we have a much greater number of foregut fermentors, versus hindgut
fermentors (natural selection)
Carnivores
-meat eater
-meat has all nutrients we need, and is easily digestible
-they have simple, digestive system, so only 1 stomach, as meat is easier to digest
then plats
-very small system (stomach,small intestine, etc. are all small relative to other
animals)
-gut/body mass ratios:
-herbiovres have a very high ratio
-carnivores have a much lower ratio, this is why wolfed (carnivores) are able to kill
larger prey (herbivores) as they have more muscle mass
Chitin
-exoskeleton of invertibrates
-polysaccharides (many sugars holding hands)
-more digestible then cellulose
-insectivorous birds (birds that eat insects)
-eat insects off of trees, there insects are much more easily digestible, therefore
giving them more energy
Pectin
-structure polysaccharides, in fruit
-we have the enzyme to digest pectin
-different fruits have different levels of pectin (needed to make jelly, if more is needed
we add Certo which is digestible)
Lipids
-fats and oils
-energy source 2.5 times the amount of energy in the same amount of sugar
-fat depot
-primary depot: subcutaneous fat
-under the skin
-it is the fat we can visually see
-it is the first depot to burn off
-second depot: organic fat
-around the intestines
-second to burn off
-ex. kidney fat, as kidney uses more every in a day then even the heart does
Document Summary
Hindgut fermenters are much less ef cient at digesting cellulose, compared to foregut. This is why we have a much greater number of foregut fermentors, versus hindgut fermentors fermentors (natural selection) Meat has all nutrients we need, and is easily digestible. They have simple, digestive system, so only 1 stomach, as meat is easier to digest. Very small system (stomach,small intestine, etc. are all small relative to other. Carnivores have a much lower ratio, this is why wolfed (carnivores) are able to kill larger prey (herbivores) as they have more muscle mass. Eat insects off of trees, there insects are much more easily digestible, therefore giving them more energy. We have the enzyme to digest pectin. Different fruits have different levels of pectin (needed to make jelly, if more is needed we add certo which is digestible) Energy source 2. 5 times the amount of energy in the same amount of sugar. It is the fat we can visually see.
