Fat – Nutrition questions with correct
verified solutions
Dietary fat ✅✅a categorical reference to lipid in food
Food lipids that are liquid at room temperature are called ✅✅oils
Food lipids that are solid at room temperature are called ✅✅fats
Food lipids are soluble in ✅✅organic solvents (ether, as used for determination of
"crude fat" of proximate analysis
Food lipids are classified by their structure ✅✅1. Most dietary fat is triacylglycerol
(triglyceride)
2. Adipose is the largest body store of triacylglycerol.
Triglyglycerols or "triglycerides ✅✅- the quantitively most common
- adipose is a substantial depot
- source of substantial food energy
Functional importance of dietary fats ✅✅1. Provision of energy and nutrients
2. Feed palatability modifier
Provision of energy and nutrients ✅✅1. dietary fat as a source of energy
2. Dietary fat provides essential fatty acids
3. Dietary fat is essential for absorption of some vitamins
Dietary fat as a source of energy ✅✅- Fat has 2.25 times more metabolizable energy
(ME) as protein and carbohydrate on a weight basis.
- Fat is used to increase dietary energy density for certain conditions
Fat is used to increase dietary energy density for certain conditions ✅✅- normal,
healthy animals
- clinical conditions
normal, healthy animals ✅✅lactation, growth (milk is 50% ME fat, physical
performance (sled dogs)
Clinical conditions ✅✅- assisted feeding when volume must be limited
- diminshed mastication ability, as in aged horses.
, Dietary fat provides essential fatty acids ✅✅- omega-6 and omega-3 fatty acids are
essential
- basis for lower limit of dietary fat as 2 to 5% dietary dry weight.
Dietary fat is essential for absorption of some vitamins ✅✅- Vitamins A, D, E, and K;
fat soluble vitamins
- Dietary fat is needed for formation of intestinal micells
- fat soluble vitamins partition into micelles for absorption along with alimentary lipids.
Feed palatability modifier ✅✅- fat of animal (not plant) origin a positive palatant for
dogs and cats
- fat in ruminant dits, limited inclusion but useful.
- coat and skin condition modifier
Fat of animal (not plant) origin a positive palatant for dogs and cats ✅✅- more
expensive than carbohydrate, high in "botique" diets.
- Promotes undesired body weight gain
Fat in ruminant diets, limited inclusion but useful ✅✅- reduces dustiness, thereby
improves diet and energy intake
- limited to 5 to 7% because of depression of rumen microflora.
Coat and skin condition modifier ✅✅- Vegetable oil supplementation (corn, safflower,
sunflower, flax)
- Coat condition improved if dietary fat is low or low in essential fatty acids.
Why some fatty acids are essential ✅✅- Essential fatty acids are specific,
"polyunsaturated" fatty acids of 18 carbons and longer that are identified by their chain
length and the position and number of double bonds.
Essential fatty acids are specific, "polyunsaturated" fatty acids of 18 carbons and longer
that are identified by their chain length and the position and number of double bonds
✅✅1. Essential fatty acid structure
2. nature of essentiality
3. Fatty acid metabolism
Essential fatty acid structure ✅✅1. polyunsaturated fatty acids ("PUFAs") are fatty
acids with two or more double bonds.
2. Nomenclature: the chemical numberin system (used by biochemists)
3. Nomenclature: the "omega" (w) or methyl-end ("n") numbering system - used by
nutritionists
verified solutions
Dietary fat ✅✅a categorical reference to lipid in food
Food lipids that are liquid at room temperature are called ✅✅oils
Food lipids that are solid at room temperature are called ✅✅fats
Food lipids are soluble in ✅✅organic solvents (ether, as used for determination of
"crude fat" of proximate analysis
Food lipids are classified by their structure ✅✅1. Most dietary fat is triacylglycerol
(triglyceride)
2. Adipose is the largest body store of triacylglycerol.
Triglyglycerols or "triglycerides ✅✅- the quantitively most common
- adipose is a substantial depot
- source of substantial food energy
Functional importance of dietary fats ✅✅1. Provision of energy and nutrients
2. Feed palatability modifier
Provision of energy and nutrients ✅✅1. dietary fat as a source of energy
2. Dietary fat provides essential fatty acids
3. Dietary fat is essential for absorption of some vitamins
Dietary fat as a source of energy ✅✅- Fat has 2.25 times more metabolizable energy
(ME) as protein and carbohydrate on a weight basis.
- Fat is used to increase dietary energy density for certain conditions
Fat is used to increase dietary energy density for certain conditions ✅✅- normal,
healthy animals
- clinical conditions
normal, healthy animals ✅✅lactation, growth (milk is 50% ME fat, physical
performance (sled dogs)
Clinical conditions ✅✅- assisted feeding when volume must be limited
- diminshed mastication ability, as in aged horses.
, Dietary fat provides essential fatty acids ✅✅- omega-6 and omega-3 fatty acids are
essential
- basis for lower limit of dietary fat as 2 to 5% dietary dry weight.
Dietary fat is essential for absorption of some vitamins ✅✅- Vitamins A, D, E, and K;
fat soluble vitamins
- Dietary fat is needed for formation of intestinal micells
- fat soluble vitamins partition into micelles for absorption along with alimentary lipids.
Feed palatability modifier ✅✅- fat of animal (not plant) origin a positive palatant for
dogs and cats
- fat in ruminant dits, limited inclusion but useful.
- coat and skin condition modifier
Fat of animal (not plant) origin a positive palatant for dogs and cats ✅✅- more
expensive than carbohydrate, high in "botique" diets.
- Promotes undesired body weight gain
Fat in ruminant diets, limited inclusion but useful ✅✅- reduces dustiness, thereby
improves diet and energy intake
- limited to 5 to 7% because of depression of rumen microflora.
Coat and skin condition modifier ✅✅- Vegetable oil supplementation (corn, safflower,
sunflower, flax)
- Coat condition improved if dietary fat is low or low in essential fatty acids.
Why some fatty acids are essential ✅✅- Essential fatty acids are specific,
"polyunsaturated" fatty acids of 18 carbons and longer that are identified by their chain
length and the position and number of double bonds.
Essential fatty acids are specific, "polyunsaturated" fatty acids of 18 carbons and longer
that are identified by their chain length and the position and number of double bonds
✅✅1. Essential fatty acid structure
2. nature of essentiality
3. Fatty acid metabolism
Essential fatty acid structure ✅✅1. polyunsaturated fatty acids ("PUFAs") are fatty
acids with two or more double bonds.
2. Nomenclature: the chemical numberin system (used by biochemists)
3. Nomenclature: the "omega" (w) or methyl-end ("n") numbering system - used by
nutritionists
