Location:
A German pig fattening farm made biochar trials with a total population of 960 pigs over a fattening period of 80 days.
Date: January 2024
Application method:
A total of 480 pigs have been considered the control group, which got the same feed as the biochar group. The biochar group of 480 pigs was fed in addition to the normal feed also a certain amount of biochar during the fattening period.
In total, 2,000 volume liter of high quality biochar was fed to the 480 pigs of the biochar group over the trial period of 80 days. The biochar was blended into the liquid feed via a drug dispenser.
Results:
At the end of the 80 days fattening period, each of the 480 pigs in the biochar group gained in average 3kg more weight each, compared to the control group. The sales price for each kg living pig was €2.00 ($2.19).
Hence, the following calculation applies:
Cost of biochar per animal €3.18. Cost for 480 pigs €1,526.40
Additional revenue per animal €6.00 Add. revenue 480 pigs €2,880.00
Profit per animal €2.82 Profit with 480 pigs €1,354.00
Animal welfare:
The farmer reported that the pigs did not bite the tails of each other anymore after a period of 3 days feeding biochar, and the pigs had no longer diarrhea after one week feeding biochar. The possible gains of reduced vet costs and pharmaceuticals have not been recorded.