ANIMAL NUTRITION LAB FEEDSTUFF MANUFACTURING

ENERGY

TDN: >70% CP: <20% CF:<18%

PROTEIN

TDN: <70% CP: >20% CF: <18%

ROUGHAGE

TDN: <70% CP: <20% CF: >18%

FRESH FORAGE

TDN: 50-80% CP: 3-30% CF: 20-40%

forage quality

relative plant maturity has the greatest impact on ____ _____

coarsely or finely

grains may be ___ or ____ ground

grinding, cracking, and rolling

mechanical processing

Steam-flaking and Steam-rolling

breakdown of starches by heat and steam application

heat

degree of ___ is dependent on moisture, pressure, and heat obtained

10-15

steam-rolled is steamed for _____ minutes to increase grain moisture by 12-14% which is then rolled into a thick flake

30-60

steam-flaked grain is steamed for ______ minutes in a vertical steam chamber to increase moisture to 18-20% which is then flaked through rollers; this results in lower density of flakes indicating a more extensive process and starch gelatinization

extrusion

presses feed through a screw, generating heat from pressure; when the feed is released and the pressure is suddenly decreased, the feed expands and dehydrates

batch

best for individual batches of feed; can be done with a shovel in a flat surface or in a container with paddles or augers

continuous

best for feed that will hardly change with few ingrediants

conditioning

pelleting

cooling

screening

bagging

steps of pelleting

conditioning

feed is mixed with steam in a conditioner to create wet mush

pelleting

the mash is then fed into a pelleting chamber, where it is forced into a metal die to create

cooling

allowed to cool after pellets are formed

screening

any fine particles that separate from the pellets are collected and either returned to the pelleting chamber or removed

bagging

finished pellets are filled into bags