This is a reveiw I wrote of my FF experiment in May and June:
I tried this with 32 of my last 120 CX broilers. We are on week 7 of the growout and I have some observations. I normally use 22% chick starter on my birds and feed it through 8 weeks as standard. For the fermented feed test, I initially just fermented the chick starter. After a week I started adding in whole grains to the fermentation (whole milo, wheat, oats, rolled barley, rolled oats, & cut corn). Currently the ratio is 1/3 chick starter and 2/3 grain mix. The dry feed is on a free feed while the fermented feed is on twice a day feeding based on cleanup.
1) Doing the fermented feed takes about 5 minutes longer each day than dry crumbles.
2) Feed consumption for the ones on fermented is running 1/2 to 2/3 the consumption of the dry feed. I will probably pass on the milo next time because they leave it to the very end and won't eat it unless I let the feeder go empty for a bit.
3) Water consumption is way less than the dry feed group. This is probably at least partially because of the water in the fermented feed. During the brooding stage, the time refilling water for the dry feed chicks canceled out the extra time feeding the fermented feed.
4) Brooder condition was much much better. I use box brooders and they can get pretty nasty at about week 2 to 3. Normally I try to get them out at 3 weeks, but this batch was in till a bit over 4 weeks because of rain storms when I would normally have put them out. This meant that the brooders got really nasty and needed new shavings added morning and afternoon. On the fermented feed group, I just had to sprinkle a few new shavings on a couple times. Mostly just a good mix of the shavings was enough to keep it clean. That is a huge plus! I wouldn't say the poop doesn't stink, but it is much more manageable than standard Cornish Cross poop. It was about like brooding a batch of Barred Rocks or RIRs. Brooder death loss was minimal even with the extended time in the brooder. I lost one in the first week.
5) The birds on the fermented feed are much more active I have never had to put tops on my meat bird brooders, but by half way through the second week, they were trying to get up and set on the 2 foot sides. by three weeks, they were a real pain to keep in since they would fly up every time I went in to feed them. I have them in an 8x8 hoop coop on pasture currently that I had rigged up with roost bars at three feet when I had layers in it. I went out yesterday and there were some on the bars and some trying to fly up.
6) Downside and it could be a big one for many. The growth is noticeably slower. I need to go out a weigh them verses the normal feed group, but it is obvious the ones on fermented feed are smaller. I would say the main group will be ready on schedule next week (8 weeks) but I would say the fermented feed group will need at least 10 weeks maybe 11 to finish out. I normally shoot for an average 4 pound dressed bird for comparison.
Conclusion: I am very tempted to try a larger fermented feed experiment on the next batch. The much more pleasant brooding experience weighs heavily with me and if the total feed consumption isn't too bad for the extra couple weeks, I can live with the slower growout. I just need to plan for it.
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Update: I ended up holding the dry feed group till 9 weeks because of stuff coming up and lack of time to get to the processor. That was a big problem since it was getting hot in Texas in late June. I ended up losing several of the dry feed birds to the heat. I didn't lose any of the FF goup even though they went to 11 weeks. The combined death loss to the extra time in the messy brooder of the dry feed birds and the heat on the dry feed birds more than wiped out any advantage to the better growth rate they had. I only lost one FF bird and it was a runt in week one.
The FF birds did so much better in the heat and the brooder house conditions were SO much cleaner that I am probably switching for good. It is too hot to run broilers in July and August (100-112 every day) here in North Texas so I am just now starting again. I have 200 CX coming from Welp (best hatchery I have found for them) Friday and will run the whole batch on FF. I will keep much better feed consumption and growth records on this batch.