Feed evaluation Flashcards
what factors need to be considered for a proper ration
environment
intake
output-input
why is intake important
if they eat less than you plan for their requirements arent being met
what percent of lysine do early weaned pigs need
1.6%
what 2 ways can dietary standards be expressed as
quantity of nutrient
percent of diet
what is the biggest priority in feeding standards
energy
units for feeding standards
NE
ME
DE
TDN
T/F dairy cows have a higher percentage of consumed energy going towards maintenance than beef cows
FALSE> most of dairy cows energy goes to milk production
what is the relationship between heat production and bodyweight
non linear
as one increases so does the other
what is the relationship between heat production per unit of boy weight and body weight
as body weight increases heat per unit decreases
what is metabolic body size, what is it used for
BW^0.75
used to predict maintenance energy requirements
equation for heat production related to body weight
HP = 70 x BW^0.75
how does rate of gain effect NEg
the faster you grow the higher your energy requirements
how does composition of gain effect NEg
fat composition will require more energy than muscle composition
T/F bulls leaner than steers leaner than heifers
TRUE
what happens to energy requirements as you mature
fat increases increasing energy requirements
