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Nutrient Requirements of Beef Cattle: Seventh Revised Edition, 1996
DIGBTPj
digestible bacterial true protein produced from the jth feedstuff, g/day
DIGCj
digestible carbohydrate from the jth feedstuff, g/day
DIGFAAi
amount of the ith absorbed amino acid from dietary escaping rumen degradation, g/day
DIGFCj
intestinally digested feed carbohydrate from the jth feedstuff, g/day
DIGFFj
digestible feed fat from the jth feedstuff, g/day
DIGFj
digestible fat from the jth feedstuff, g/day
DIGFPj
digestible feed protein from the jth feedstuff, g/day
DIGPB1j
digestible B1 protein from the jth feedstuff, g/day
DIGPB2j
digestible B2 protein from the jth feedstuff, g/day
DIGPB3j
digestible B3 protein from the jth feedstuff, g/day
DIGPj
digestible protein from the jth feedstuff, g/day
DIP
degraded intake protein
DM
dry matter
DMI
dry matter intake
DOP
days on pasture
E
energy content of milk, Mcal (NEm)/kg
e
base of natural logarithms
EAAGi
efficiency of use of the ith amino acid for growth, g/g (Table 10–6)
EAALi
efficiency of use of the ith amino acid for milk protein formation, g/g (Table 10–6)
EAAPi
efficiency of use of the ith amino acid for gestation, g/g (Table 10–6)
EAT
effective ambient temperature (°C)
EBG
empty body gain, kg
EBW0.75
metabolic body weight based on empty body weight, kg
EBWN
EBW at the next body condition score
EI
external insulation value, °C/Mcal/m2/day
EN
nitrogen in excess of rumen bacterial nitrogen and tissue needs, g/day
EQEBW
equivalent empty body weight, kg
EQSBW
equivalent shrunk body weight, kg
ER
energy reserves, Mcal
FA
daily forage allowance, kg/day
FATj
fat composition of the jth feedstuff, g/day
FATj (%DM)
percentage of fat of the jth feedstuff
FCBACTj
yield of fiber carbohydrate bacteria from the jth feedstuff, g/day
FDMj
amount of indigestible DM in feces from the jth feedstuff, g/day
FE
fecal energy
FEASHj
amount of ash in feces from the jth feedstuff, g/day
FEBACTj
amount of bacteria in feces from the jth feedstuff, g/day
FEBASHj
amount of bacterial ash in feces from the jth feedstuff, g/day
FEBCj
amount of bacterial carbohydrate in feces from the jth feedstuff, g/day
FEBCPj
amount of fecal bacterial protein from the jth feedstuff, g/day
FEBCWj
amount of fecal bacterial cell wall protein from the jth feedstuff, g/day
FEBFj
amount of bacterial fat in feces from the jth feedstuff, g/day
FECB1j
amount of feed starch in feces from the jth feedstuff, g/day
FECB2j
amount of feed available fiber in feces from the jth feedstuff, g/day
FECCj
amount of feed unavailable fiber in feces from the jth feedstuff, g/day
FECHOj
amount of carbohydrate in feces from the jth feedstuff, g/day
FEENGAj
amount of endogenous ash in feces from the jth feedstuff, g/day
FEENGFj
amount of endogenous fat in feces from the jth feedstuff, g/day
FEENGPj
amount of endogenous protein in feces from the jth feedstuff, g/day
FEFAj
amount of undigested feed ash in feces from the jth feedstuff, g/day
FEFATj
amount of fat in feces from the jth feedstuff, g/day
FEFCj
amount of feed carbohydrate in feces from the jth feedstuff, g/day
FEFPj
amount of feed protein in feces from the jth feedstuff, g/day
FEPB3j
amount of feed B3 protein fraction in feces from the jth feedstuff, g/day
FEPCj
amount of feed C protein fraction in feces from the jth feedstuff, g/day
FEPROTj
amount of fecal protein from the jth feedstuff, g/day
FFMtotal
feed for maintenance (adjusted for stress), kg DM/day
FHP
fasting heat production
FM
mobilizable fat, kg
FORAGE
forage concentration of the diet, %
FSBW
final shrunk body weight at maturity for breeding heifers or at the body fat end point selected for feedlot steers and heifers
GF
green forage availability (ton/ha)
GRAZE
forage availability factor if grazing, %
GU
grazing unit size, hectare
HAIR
effective hair depth, cm
HE
heat production, Mcal/day
He
minimal total evaporative heat loss
HIDE
hide adjustment factor for external insulation (1=thin, 2=average, 3=thick)