Urea

Organic chemical compound with the chemical formula CO(NH2)2. Urea is a non-protein nitrogen compound used in ruminant feeding as a cheap source of nitrogen. Feed-grade urea contains about 42-46% nitrogen, which corresponds to 260 to 288% crude protein equivalent.

Values

Main constituents
Parameter As fed On DM Unit Other Unit SD Range Count SD Range Count SD Range Count
Dry matter 99.4 100 % - 0.8 98.3 -100 41 0.6
Crude protein 286 287 % - 6.3 264 -301 147 6.2 267 -298 39
Crude fat 0 0 % -
Ash 0.03 0.03 % - 0 -0.1 4 0 -0.1 3
NDF 0 0 % -
ADF 0 0 % -
Starch 0 0 % -
Gross energy (kcal) 2520 2530 kcal/kg -
Gross energy (MJ) 10.5 10.6 MJ/kg -
Fatty acids
Parameter As fed On DM Unit Other Unit SD Range Count SD Range Count SD Range Count
Fatty acids g/kg 100 % fat
Ruminants
Parameter As fed On DM Unit Other Unit SD Range Count SD Range Count SD Range Count
UFL Systali 0.26 0.26 per kg -
UFV Systali 0.2 0.2 per kg -
PDIA Systali 0 0 g/kg -
PDI Systali 71 71 g/kg -
Rumen protein balance Systali 2543 2557 g/kg -
Fill Unit ruminants Systali 0.225 0.226 per kg -
ME ruminants Systali (kcal) 810 810 kcal/kg -
NE lactation ruminants Systali (kcal) 460 470 kcal/kg -
NE meat production ruminants Systali (kcal) 350 350 kcal/kg -
ME ruminants Systali (MJ) 3.4 3.4 MJ/kg -
NE lactation ruminants Systali (MJ) 1.9 1.9 MJ/kg -
NE meat production ruminants Systali (MJ) 1.4 1.5 MJ/kg -
OM digestibility ruminants Systali - 98.6 %
Energy digestibility ruminants Systali - 100 %
N degradability ruminants Systali - 93 %
DM degradability ruminants Systali - 0 %
Starch degradability ruminants Systali - 0 %
UFL FL1 Systali 0.24 0.24 per kg -
UFV FL1 Systali 0.17 0.17 per kg -
PDIA FL1 Systali 0 0 g/kg -
PDI FL1 Systali 71 72 g/kg -
Rumen protein balance FL1 Systali 2617 2632 g/kg -
UFL FL4 Systali 0.32 0.32 per kg -
UFV FL4 Systali 0.25 0.25 per kg -
PDIA FL4 Systali 0 0 g/kg -
PDI FL4 Systali 70 71 g/kg -
Rumen protein balance FL4 Systali 2427 2440 g/kg -
PDIA INRA 2007 0 0 g/kg -
PDIN INRA 2007 1646 1656 g/kg -
OM digestibility ruminants INRA 2007 - 100 %
Energy digestibility ruminants INRA 2007 - 100 %
N digestibility ruminants - 100 %
N digestibility, intestinal, ruminants - 0 %
N degradability ruminants (k=0.06) - 100 %
Starch degradability, ruminants (k=0.06) - 0 %
DM degradability ruminants (k=0.06) - 0 %
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