Ah of course ... I should have known that ...
So that is mostly loss ... I don't think Ethanol counts as a nutrient for chickens, but then our fermentation is mostly bacterial not yeast so ethanol is minimal. The carbon dioxide is of course loss (not that I am mourning the death of a little sugar!).
So the overall energy is likely to be reduced in the feed, but as most grains are on the balance of things, too high energy/low protein, that is a good move.
Interesting piece in the book Nutrient Requirements of Poultry: Ninth Revised Edition, 1994.
"Only about 10 percent of the phytate phosphorus in corn and wheat is digested by poultry (Nelson, 1976)."
To judge from the figures in the first study given by molpet above, around 30% of the Phytate Bound Phosphorous is reduced by fermentation. If this is all converted to usable forms of phosphorous, that is a very significant increase in phosphorous available for the chicken.
So that is mostly loss ... I don't think Ethanol counts as a nutrient for chickens, but then our fermentation is mostly bacterial not yeast so ethanol is minimal. The carbon dioxide is of course loss (not that I am mourning the death of a little sugar!).
So the overall energy is likely to be reduced in the feed, but as most grains are on the balance of things, too high energy/low protein, that is a good move.
Interesting piece in the book Nutrient Requirements of Poultry: Ninth Revised Edition, 1994.
"Only about 10 percent of the phytate phosphorus in corn and wheat is digested by poultry (Nelson, 1976)."
To judge from the figures in the first study given by molpet above, around 30% of the Phytate Bound Phosphorous is reduced by fermentation. If this is all converted to usable forms of phosphorous, that is a very significant increase in phosphorous available for the chicken.