Feed conversion Ratio

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Feed conversion Ratio

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Floyd

Joined: 19 Feb 2009
Posts: 65
Location: Off-Grid North West Scottish Highlands

Posted: Mon Feb 25, 13 3:34 pm Post subject: Feed conversion Ratio

Can anyone explain this table to me. It is based on Sasso's Feed Conversion Ratio(FCR). Please forgive the layout I could not get the table to paste correctly.

I am simply trying to work out how much feed a bird killed at 2.5Kg and raised for 84 days would eat/cost in both chick crumb and growers pellets.

Many thanks in advance, I just cant get my head round the calculation.

crofter

Joined: 11 Feb 2007
Posts: 2252

Posted: Tue Feb 26, 13 10:19 am Post subject:

Looking at the last line, 70 days, it looks like an average size bird will be 2531 grams. Male birds will be heavier (2797 grams) and females lighter (2265 grams) Using their fcr of 2.53, that means you will need a total weight of feed of 6403 grams (2531 * 2.53)... in theory. You can work out the split between crumbs and pellets if you know how long you are going to be feeding each for, eg up to 28 days would be an average weight of 670g * fcr 1.62 = 1085 grams of crumbs.

Floyd

Joined: 19 Feb 2009
Posts: 65
Location: Off-Grid North West Scottish Highlands

Posted: Tue Feb 26, 13 3:17 pm Post subject:
Thanks Crofter, That really helps me get a clearer picture.

Bodger

Joined: 23 May 2006
Posts: 13524

Posted: Tue Feb 26, 13 3:25 pm Post subject:
I don't blame you for asking, because my eyes glazed over just as soon as I saw all those figures and columns.

chez

Joined: 13 Aug 2006
Posts: 35935
Location: The Hive of the Uberbee, Quantock Hills, Somerset

Posted: Tue Feb 26, 13 3:30 pm Post subject:
Interesting stuff, thanks both. The wartime book I have says that it stops being profitable in feed conversion terms, to grow cockerels on beyond sixteen weeks; obviously talking about traditional breeds.

Bodger

Joined: 23 May 2006
Posts: 13524

Posted: Tue Feb 26, 13 3:38 pm Post subject:
I don't know about you Chez, but none of the traditional breeds that I've tried to fatten, have been anything like ready at sixteen weeks.

chez

Joined: 13 Aug 2006
Posts: 35935
Location: The Hive of the Uberbee, Quantock Hills, Somerset

Posted: Tue Feb 26, 13 3:43 pm Post subject:

No, quite - but I guess that if you're on a fine line of input/output that they were in the '40's, you could stick it in the slow cooker and get some protein off the carcass. No good for much else, though.

I did two six month old Barnevelders at the weekend and they dressed out at about two kilos each (which is just under 4.5lb, if I've divided properly). I just tend to let them go on now - they seem to mature a lot between twenty and twenty four weeks.

Bodger

Joined: 23 May 2006
Posts: 13524

Posted: Tue Feb 26, 13 3:47 pm Post subject:
My LS cockerels certainly aren't Mr Universe contenders when they go into the pot but the biggest shock that I ever had was when I despatched some huge looking Marans. Anyone for soup?

chez

Joined: 13 Aug 2006
Posts: 35935
Location: The Hive of the Uberbee, Quantock Hills, Somerset

Posted: Tue Feb 26, 13 4:03 pm Post subject:
Even pekins will go for soup

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