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Pigs, acorn, grass

Guy De Pompignac

Joined: Nov 16, 2010
Posts: 190
Location: SW of France
I dig a little in scientific publications about the "montanera" way of fattening pigs on acorns of Q. ilex rotundifolia and grass during months of november and december, here are some numbers :

Each pig eat 5-8kg of acorn and 2-2.5 kg of grass every day (fresh matter) (0.45 kg of grass DM)

>99.5% of bite was either for acorns or grass (50-50 or 60-40)

Daily volontary intake is (g/day)
Crude protein : 230
Crude fibre 183
Crude fat 390

Yield / stocking rate :

* Yield of oak is 8-14 kg/year, so this means you need 0.3-1 oak (Q. ilex) / day / pig
* Pasture yield 200–500 kg dry matter (DM) of the autumn grass production per hectare
* One article says "A stocking rate of 0.76 pigs/ha was established so that the supply of acorns would not run out before the end of the fattening period"

Daily weight gain : 500g


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Kirk Hutchison

Joined: Feb 05, 2010
Posts: 418
Location: Los Angeles, CA
Once I get land I definitely want to try raising pigs this way. Thanks for all the info!

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Jeanine Gurley

Joined: May 23, 2011
Posts: 1392
Location: Midlands, South Carolina Zone 7b/8a
Hmmm...I may have to do a little digging on turkeys eating acorns.

1. my projects

Joined: Dec 03, 2010
Posts: 58
Did you have acorns nearby? 
Jeanine Gurley

Joined: May 23, 2011
Posts: 1392
Location: Midlands, South Carolina Zone 7b/8a
At work there is building that has TONS of acorns around it every year.  Since my husband is in charge of the maintenance of all of the grounds and buildings I know which areas have been treated with chemicals and which have not.

It would be great if I could find a use for all of those acorns.
jacque greenleaf

Joined: Jan 21, 2009
Posts: 464
Location: Burton, WA (USDA zone 8, Sunset zone 5) - old hippie heaven
Know anyone with goats? They love acorns...
subject: Pigs, acorn, grass
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