Poultry

Question 1

What are the two reasons why feed is required?

Answer 1

• nutritional requirements

- behavioural requirements

Question 2

Why are there behavioural requirements for food?

Answer 2

• motivation to forage, which if not satisfied may lead to injurious pecking

Question 3

What are the nutritional requirements for?

Answer 3

• feathers- growth and replacement, moulting, methionine and cysteine
• egg and shell- calcium and phosphorus, proteins albumen and yolk, egg
  size and chick size, yolk pigments- canthaxanthin= a carotenoid
• bone health in laying chickens
• meat- protein

Question 4

Importance of water

Answer 4

• essential, sick animals have a greater requirement
• insufficient supply will have impacts on growth and performance- increased mortality
• Administer vaccines and medication for whole flock
• behavioural requirement for waterfowl

Question 5

Energy requirements

Answer 5

• as the energy density of feed increases, intake decreases, this may lead to decreased intake of other nutrients, diets adapted
• how to change energy density: fats- increase density; dietary fibre- reduces energy density

Question 6

fibre requirements

Answer 6

main sources: wheat and barley

will contain non-starch polysaccharides- which are indigestible due to the lack of enzymes.

Question 7

Non-starch polysaccharides

Answer 7

two forms: water-soluble and insoluble

Question 8

negative effects of Non-starch polysaccharides

Answer 8

Water-soluble: increases digesta viscosity, leading to reduced nutrient absorption and loose faeces/ colitis
Water-insoluble: entrap nutrients