Definition of Unit 1 unit(U) of phytase equals to the amount of enzyme, which releases 1µmol of inorganic phosphorus from 5.0 mmol/L sodium phytate solution in 1 min at 37ºC and pH 5.5 . Functions 1. Degrade phytase, release more organic phosphorus. 2. High dosage improves utilization of mineral(Ca2+Fe3+Zn2+Mn2+Na+K+), amino acid, energy etc. 3. Save … Continue reading Natural Heat Stable Poultry Feed Supplement Enzyme Thermostable Phytase
What is the Feed Conversion Ratio (FCR)?
The FCR is simply the amount of feed it takes to grow a
kilogram of fish. For example, if it requires two kilograms
of feed to grow one kilogram of fish, the FCR would be
two.
FCR=2KG FEED / 1kg FISH
This means that when a feed has a low FCR, it takes less
feed to produce one kilogram of fish then it would if the
FCR were higher. A low FCR is a good indication of a
high quality feed.
Why is FCR important?
FCR is a valuable and powerful tool for the fish farmer. It
allows for an estimate of the feed that will be required in
the growing cycle. Knowing how much feed will be needed then allows a farmer to determine the profitability of an
aquaculture enterprise. This means that FCR allows the farmer to make wise choices in selecting and using feed to
maximize profitability.
How are protein and FCR related?
As the amount of protein in the diet increases, the FCR gets smaller. This means that it takes less feed to produce a
kilogram of fish. This can be important, because while feed with higher levels of protein might be more expensive per
kilogram, because it is possible to use less feed, it may actually be the cheapest way to feed fish.
