Chemical composition of animal feed

19 important questions on Chemical composition of animal feed

What are the most important functions of minerals?

Formation of bones (Ca and P)
acid base balance within cells
vital role within enzymes

What does phytate do when bound to minerals?

Decrease their absorption and make it less available

What can you do to solve P problems in diets?

Add inorganic phosphorus (phosphate) or add phytase (cuts bonds)
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Name 3 types of proteins in feed

Enzymes in the cell (albumin fraction)
storage proteins in seeds
within the cell wall

Functions of fat/lipids/oils

Energy source
solvent for vitamin A, D, E and K
supplier for essential fatty acids

Saturated and trans fatty acids:

Linear, high cohesion, high melting point, fats

Unsaturated fatty acids:

Branched, low cohesion, low melting point, oils

Two groups of carbohydrates:

Free sugars and starch

Nutritional importance of structural carbohydrates:

Energy supplier for ruminants
limited utilization for monogastric animals

What component of the plant cell wall causes low digestibility?

Lignin

What is needed to break down the 1,4-b-binding in cellulose?

B-cellulase, made by microbes

Two types of vitamins

Bio catalysts and inductive vitamins

Biocatalysts work as co-enzyme within biochemical reactions, which vitamin?

Vitamin B

Inductive vitamins are essential for types of tissue

Vitamins A, C, D, E and K

What vitamin is expressed as µg or mg per day?

Vitamin B

Vitamins can be toxic in high concentrations, what type of vitamins are not toxic?

Bio-catalysts

What two components can have negative effects on digestion of nutrients?

ANFs and toxic components

3 kinds of anti nutritional factors:

Protease inhibitors (e.g. Trypsin inhibitor in SBM)
Tannins
Phytate

Mycotoxins are... And what is the most important group?

Toxic components that are produced by funghi during storage
most important group: aflatoxins

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