Classifying Feedstuffs 1:
What is the classification for Legumes?
Green Forage
What groups do you separate your forage samples into for botanical composition?
Grass, Legumes, Weeds, Dead material
What formula is used for NFE?
NFE= sample-(WECCA)
*=SAMPLE - (H2O+EE+CP+CF+ASH)
If you are given 3 feedstuffs, what 2 mixes do you need to make then later balance?
HEM and LEM
What feedstuffs are classified as GREEN FORAGES?
Grasses/ Legumes.
What are the reasons for classifications for Energy Concentrates? (properties of feedstuffs)
<18% CF
<20% protein
high in starch/ energy
Define: number of animals on a pasture for a specified time period
Stocking rate
What's the formula for DM?
DM= total feed sample- moisture/ total sample
Given: 3.5%minerals, and 10% brewers rice.
If you want to create a diet with SBM, Corn, and Oats, what percentage of the diet is from the 3 feedstuffs?
86.5%
This is the first step of Pearson Square!
What are 5 examples of minerals?
Oyster shells, limestone, dicalcium phosphate, monocalcium phosphate, meat/ bone meal, salt, mineral premix
1. Roughages
2. Concentrates
3. Mineral supplements
4. Vitamin supplements
5. Non-nutritive additives
Define: amount of forage available for grazing animals in a specific pasture of field (maximal stocking rate)
Carrying capacity
What formula do you use to find %OM? (given DM and ash)
(DM-ASH)/total sample *100= %OM
Why do we do Pearson Square?
Determine the correct proportion of different feed ingredients based off of their nutrient composition.
what feedstuffs are classified as protein supplements?
oilseed meals, oilseeds, grain legumes, animal proteins, grain processing by products.
What are the properties of GREEN roughages?
50-80% moisture
At least 18% CF
Define: forage allowed to grow and accumulate for use at a later time or during a time of forage deficit
Stockpiled forage
Convert 90kg as fed to DM (10% DM)
DM= 9kg
When creating a HEM, you must select the feed with a higher _____ for the bottom left corner of the Pearson Square.
ME (Metabolizable energy)
List 5 energy concentrate feedstuffs:
Cereal grains, root/ tuber crops, processing by-products, fats, and oils.
EX: corn, potatoes, molasses, sorghum/ milo, citrus pulp...
Which would you select for poultry diets: corn gluten feed or corn gluten meal? Why?
corn gluten MEAL! Meals have a higher Protein content, which poultry need for growth, egg production, and feed efficiency.
If there's 0.0653kg DM Grass and the total DM is 0.0918kg, what is the PROPORTION of grass in the sample? (%)
(0.0653/0.0918) *100
= 71.18% Grass
What is the OM% (given: DM=2.67g, ASH=0.21g, total sample= 3g)
(2.67-0.21)/3 *100 = 82%
The top left corner of Pearson Square MUST have a larger _____ value than the nutrient requirement.
CP (Crude Protein)
What are Non-nutritive additives? give an example:
Supplements that do NOT provide nutrients that are used to:
stimulate growth, boost efficiency, better health...
EX: antibiotics, coloring/ flavor agents, enzymes, coccidostats...