Protein Sources and Byproducts Flashcards
most common protein sources in western canada
canola meal
soybean meal
DDGS
steps from rapeseed to canola
removed glucosinolates and erucic acid
solvent extracted canola meal
high protein meal with high lysine
high digestibility and energy
what to due with hull of canola that is removed to make high protein content meal
pellet for dairy cow fiber
DDGS are byproduct of what industry
ethanol
DDGS may be used to replace what in feedlot
barley grain or barley silage
risk of using DDGS
highly variable nutrient content due to starting materials and processing methods
2 classes of feed byproducts from dry milling
dry and wet
nutrient characteristics of wet or dry distillers byproducts from dry processing
low starch
high fat, protein, fiber
centrifuged or screened whole stillage splits into
thin stillage and wet distillers grains
wet byproducts
wet distillers grain
thin stillage
wheat vs corn DDGS
corn DDGS can replace up to 20% of barley grain in background in 40% in finishing
wheat. DDGS inclusion optimal at 20%
corn DDGS superior energy to both wheat DDGS and barley grain
opppurtunities for DDGS inclusion
increase corn silage use
increase need for protein supplementation
1% recuction in fat of low oil DDGS results in ____% reduction in net energy gains
1.3%
medium vs low oil DDGS
medium has better finishing feed efficiency
no impact on liver abscess
urea protein type
rumen degradable protein
urea is __% nitrogen
46%
risk of too much urea
can cause intoxication so increase slowly
oat hull nutrients
low CP
high fiber
low energy
risk of too much oat hulls
impaction
limit to 50% DMI in wintering and 35% when backgrounding
why producers dont like oat hulls
dont flow well
dusty
why would feedlots refuse screenings
chaff/stems
<15% parent grain
weed seeds
dust/dirt
what affects what you are willing to pay for screenings
your ability to process them
problems with refuse grain screenings
potential to spread weed seeds
animals cannot effectively use in original state
nutrient variability
mycotoxin contamination is often high in screenings
