Ration Analysis Flashcards
(8 cards)
Why is hay in a ration?
More palatable than straw as a source of fibre so encourages higher intake of the TMR
Why is grass silage in a ration?
High in protein
High in energy so will boost the overall ME
Good palatability
Why is maize silage in a ration?
High ME
Why is alkagrain added to a ration?
Adds ammonia -> allows ruminal flora to synthesis protein -> increased RUDP (undegradable rumen protein)
Why is rape added to a ration?
Provides balanced carbohydrate, protein, fibre and minerals
Why wouldn’t you want dry cows to be too fat?
Risk of metabolic acidosis, fatty liver, ketosis, dystocia, decreased immune function, risk factor for metabolic syndrome, poor fertility
Fat cows have a decreased DMI in dry period and early lactation -> increased weight loss and reduced milk yield
Why wouldn’t you want dry cows to be too thin?
Require extra feeding (expensive)
Prolonged calving interval
Produce less milk
Why is straw in a ration?
High fibre source
Promotes good rumen health: scratch factor (pressure of coarse material against the rumen wall stimulates rumination)
Low ME so cow can eat a lot of it without getting fat
