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Introduction to Nutrition Flashcards

1
Q

Why is nutrition important?

A

Correct nutrition is essential for maintaining optimum health in all species
Failure to do so will have major health effects on the animal

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2
Q

Define nutrition?

A

The process related to the supply of food constituents (nutrients) taken in by a species to support life

Giving the body everything it needs to be able to function. Nutritionally balanced diet.

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3
Q

What are nutrients?

A

Nutrients are the components of food

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4
Q

How do nutrients support life?

A

An energy supply
Providing structural components for new cells
Transporting substances within and through the body - water
Regulating temperature - water
Helping chemical reactions in the body - enzymes
Helping food palatability - Fat

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5
Q

Define ingestion

A

The act of taking food via the mouth

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6
Q

Define digestion

A

The breaking down of food into smaller units by mechanical and chemical means
Use of tongue, teeth, lips and throat

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7
Q

Define absorption

A

The transportation or diffusion of small food compounds into the body

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8
Q

Define metabolism

A

The process by which physiological changes occur in the body through chemical reaction
All the physical and chemical changes that occur in cells to allow growth and maintain body functions

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9
Q

What is metabolism?

A

Metabolism is the sum of all chemical reactions

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10
Q

Define anabolism

A

The process of building up nutrient molecules into large units that store energy
The constructive phase of metabolism which is characterised by the conversion of simple substances into the more complex compounds of living matter e.g. Amino acids into protein

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11
Q

Define catabolism

A

The breaking down of complex organic compounds often resulting with the release of energy
The metabolic process in which energy is used by breaking down large complex molecules into smaller ones

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12
Q

What is the differences between anabolic and catabolic

A

Anabolic:

  • builds up
  • constructive phase
  • energy use
  • ◼️ ⬛️ -> ▪️▪️▪️▪️

Catabolic:

  • breaks down
  • destructive phase
  • energy release
  • ▪️▪️▪️▪️ -> ⬛️⬛️
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13
Q

What does the term dry matter mean?

A

Chemical components available to provide energy once the water content of the food has been extracted

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14
Q

Define hunger

A

The physiological sensation triggered when the body require energy

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15
Q

Define appetite

A

The desire for a particular type and quantity of food to satisfy a bodily need

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16
Q

Define anorexia

A

Loss of desire to eat

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17
Q

Define balanced diet

A

Where all the correct nutrients are available to the animal in the correct quantities

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18
Q

What are the 7 main nutrients in food?

A 
Water
Fat
Protein
Carbohydrates
Vitamins
Minerals
Amino acids
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19
Q

What is the purpose of water?

A

Carrier of substances to and from body tissues
Temperature regulation
Fluid balance
pH of blood
Gaseous exchange
Lubricates joints/tissues and organs
Water is not an energy producing nutrient

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20
Q

What factors may influence the quantity of water an animal requires?

A 
The age
Life stage - lactation, neonates etc
Environmental conditions
Diet
Habit
Physical exertion
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21
Q

What is synovial fluid?

A

Fluid that lubricates the joints

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22
Q

What are the 3 ways water is obtained by the body?

A

Drinking - must be fresh and available at all times
Water in food - varies depending on food type
Metabolic water - produced from catabolism of nutrients;
CHO breakdown 60%
Proteins 40%
Fats 10%

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23
Q

What 6 ways is water lost from the body?

A 
Urine
Faeces
Expired air
Swear
Milk during lactation
Blood loss
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24
Q

What is the purpose of carbohydrates?

A

Provide energy
Can also be converted into body fat
Can affect gut function
Made of sugars

25
Where do we get carbohydrates from?
``` Cereals Potatoes Bread Pasta Rice ```
26
Carbohydrates are classified into two groups, what are they?
Soluble | Insoluble
27
What are soluble carbohydrates?
Simple and complex sugars Cereals provide the majority of energy in commercial dog food These are absorbed and utilised by the body
28
What are insoluble carbohydrates?
Fibre - used to bulk low calorie food | Not absorbed or utilised by the body
29
What are the 2 types of soluble carbohydrates?
Monosaccharide - glucose - fructose Disaccharide - 2 monosaccharides joined by an enzyme reaction - These are classed as simple sugars - lactose - maltose - sucrose
30
What insoluble carbohydrates are there?
Cellulose - found in the wall of plant cells - non digestible in carnivores - important energy source in herbivores - provides dietary fibre
31
What does monosaccharide mean?
One sugar
32
What dies disaccharide mean?
2 sugars
33
What does polysaccharide mean?
Many sugars
34
What are polysaccharides?
Made up of chains of simple sugars Primary plant energy made available by cooking Glycogen - animal starch chain of glucose molecules These are classified as complex sugars
35
Are diets high in insoluble fibre appropriate for animals with high energy requirements?
No Because they are low in energy density So would need a lot of it
36
What are amino acids?
Building blocks of proteins There are 22 different amino acids As few as 50 or as many as several thousands of amino acids line up in a specific sequence to make a protein
37
How do animals receive most of there amino acids?
The food they eat Synthesis Breakdown (catabolism) and build up (anabolism) of chemicals into the required amino acids
38
Define synthesis
Bi-product of chemical reaction
39
What are the essential amino acids?
Amino acids that an animal can not synthesise itself Must be provided in the diet Dogs require 10 essential amino acids Cats require 11 essential amino acids such as Taurine
40
What is Taurine?
An essential amino acid required for cats Only found in meat protein Deprivation causes degeneration of the retina and dilated cardiomyopathy (weakening of the heart) Deficiency poorly shown through symptoms
41
What is arginine?
``` Show signs of protein deficiency Rough dull coat Poor muscle development Reduced immunity Anaemia Poor wound healing Lethargy Anorexia ```
42
What are proteins?
Very complex organic compounds composed of nitrogen, carbon, hydrogen and oxygen atoms Made up of amino acids From part of all living cells, and non living structures such as hair, nails and matrix of connective tissue
43
What is the purpose of proteins?
All enzymes and some hormones are protein Absolutely essential for growth and repair of the body May be used for energy production
44
What are four reasons protein is required in the diet?
Tissue growth and repair Metabolic function (enzymes and protein) Protect against disease Provide energy
45
Proteins are particular important for animals that are...
Growing Reproducing Working Unwell/recovering Carbohydrates have a similar role
46
What 5 ways can protein be lost from the body?
``` Faeces Urine Hair Skin Sweat ```
47
Five foods that contain protein?
``` Meat Eggs Cheese Legumes Nuts ```
48
Which if species has the higher protein requirements, cats or dogs?
Cats require 3.3 - 3.5g/kg/day | Dogs require 1.3 - 1.5g/kg/day
49
Name 4 functions of fats
``` Provide energy Absorption of fat soluble vitamins D,E,K,E Enhance palatability Source of essential fatty acids Insulation Too much fat causes obesity ```
50
What are lipids?
``` Organic substances only very slightly or totally non-soluble in water, but very soluble in organic solvents such as alcohol Contain; - fats - oils - waxes Fat is the most abundant lipid ```
51
What are fat molecules called?
Triglycerides
52
What are essential fatty acids?
Linoleum acid Arachidonic acid There are the parent compounds from which the more complex longer chain compounds can be synthesised by the body Cats have only a limited ability to convert EFA's into the longer compound and therefore require a preformed source of arachidonic acids from animal sources
53
What is DHA?
Needed for cognitive development | Easier training
54
What are volatile fatty acids?
Significant source of energy for herbivores Produced in the ruminant by the fermentation process of insoluble fatty acids Formed by the breakdown of cellulose
55
What are antioxidants and why do we add them to feeds?
``` Prevents oxidation of 'stored' food Prevents fats from becoming rancid and breaking down Examples; - vitamin C - vitamin E - Carotenoids ``` Preserves food
56
How is protein made into an amino acid?
Protein -> protease -> amino acid
57
How is far made into fatty acids/glycol?
Fat -> lipase -> fatty acids/glycol
58
What proteins break down carbohydrates to glucose?
CHO -> amylase -> maltase -> glucose

Animal Health and Husbandry (3 decks)

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