Calculation FCR(Feed Conversion Ratio) before and after sorting - for trout breeding farms

[kaveh arabdashti]

Hello,

There is technical confusion for me to understanding how transferring trouts from one raceway to another raceway through sorting will(not) effect FCR amount in origin raceway and destination raceway , because when we transfer trout from one raceway to another one ,we add history of feeding of each of them(trouts) to destination raceway , so this factor should re-calculate for both of raceways ,

Is my theory for effecting of sorting to FCR re-calculation correct or wrong ?and if it is correct , how can we re-calculate FCR after sorting in origin and destination raceways?and if it is wrong , why?

Thanks ,

kaveh

[RupertofOZ]

Kaveh... the FCR is a feed conversion ratio... the amount of feed required to produce 1kg weight of fish...

Even if you only transfer some of the fish from one raceway... you can still aproximate the amount of feed used per fish while in that raceway...

And then add the amount of feed used per fish in the second raceway... to determine the FCR....

Or near enough...