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Urea
What is Urea?
Urea is an economic non-protein nitrogen (NPN) source for boosting protein
levels in ruminant rations. It is also a highly effective preservative for
whole grain and wholecrop cereals.
Urea as a protein source:
Adequate protein supply to the rumen is essential to enable micro-organisms
to utilise dietary energy, in particular from forage. Ammonia is a major source
of nitrogen for the synthesis of microbial protein in the rumen. Urea when
fed is readily converted to ammonia by urease enzyme in the rumen, thus providing
an economic source of rumen degradable protein.
- Cost- effective concentrated protein source (287% crude protein)
- Effective ‘protein booster’ for low protein feeds
- Especially useful where maize and cereals are used in complete
diets inherently low in protein.
General recommendations suggest a maximum NPN feed rate of 20g/100kg
LW/day which equates to 43g urea / 100 kg LW. This is approximately
250g urea per day for a 600 kg cow.
Urea as a whole crop cereal preservative:
Applied to whole crop or whole grain cereals at harvest, urea will readily
break down to ammonia, which acts as an effective alkaline preservative for
the crop. Controlled feeding trials and on-farm experience have shown the
benefits of harvesting and feeding alkaline wholecrop cereals:
- Allows flexibility in harvesting
- Maximises dry matter and starch yields
- Improves forage digestibility and intakes
- Prevents aerobic deterioration of the forage
Step
by step guide to alkaline wholecrop cereals
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