Poultry Flashcards
1
Q
What are the two reasons why feed is required?
A
- nutritional requirements
- behavioural requirements
2
Q
Why are there behavioural requirements for food?
A
- motivation to forage, which if not satisfied may lead to injurious pecking
3
Q
What are the nutritional requirements for?
A
- 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
4
Q
Importance of water
A
- 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
5
Q
Energy requirements
A
- 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
6
Q
fibre requirements
A
main sources: wheat and barley
will contain non-starch polysaccharides- which are indigestible due to the lack of enzymes.
7
Q
Non-starch polysaccharides
A
two forms: water-soluble and insoluble
8
Q
negative effects of Non-starch polysaccharides
A
Water-soluble: increases digesta viscosity, leading to reduced nutrient absorption and loose faeces/ colitis
Water-insoluble: entrap nutrients
