Animal Nutrition Trials Flashcards
What is the active ingredient in cinnamon?
Cinnamaldehyde
The main goal of the cinnamaldehyde trial was to?
Market lambs for flavour meat without antibiotics. Can plant extracts replace ionophores in lamb diets –> to promote animal growth
What are ionophores?
A lipid-soluble molecule usually synthesised by microorganisms to transport ions across the lipid bilayer of the cell membrane
What were ionophores used for in beef and dairy cattle industries?
To prevent acidosis/bloat and liver abscesses. And increase level of propionic acid.
What is monensin isolated from?
Streptomyces cinnamonensis
What action does monensin have on the body?
It blocks intracellular protein transport and exhibits antibiotic/antimalarial properties. Antibiotic properties: their ability to transport monovalent and divalent metal cations through cellular and subcellular membrane. Ruminants: 28-33ppm
What was the trial design for the cinnamaldehyde trial?
4 different groups a ‘block design’.
The only variable is the amount of cinnamaldehyde fed. (0% in diet, 0.01%, 0.02% and 0.04% CDH/lamb/day
What is “feed conversion efficiency”?
How much feed (Kg) is necessary to conver to 1kg of liveweight. Divide intake by gain.
What is the conclusion of cinnamadehyde trial?
No effects of cinnamaldehyde on animal performance, or rumen fermentation.
Decreased overall off flavour intensity.
What are the conclusions drawn from the trial where lambs were fed juniperberry and cinnamaldehyde?
Ewe lambs fed cinnamaldehyde and juniperberry had higher ADG but neither difference on SMY nor final LW.
Minor changes on meat characteristics
