Guinea Incubation Troubles

hillbillywelder

Hatching
Jun 6, 2020
7
1
8
Hello all. I've been "browsing" through the forum for a long time, and finally decided to join as I'm new to incubating eggs, and these guineas are giving me a run for my money.

Here is the back story. My wife and I have a mixed flock of about 4 dozen birds. (Chickens, ducks and guineas). We also raise broilers in our pasture in a tractor. The broilers are getting processed in a few days and I was hoping to raise a bunch of Guineas to butcher in the fall of this year. I have a new Hovabator 2370 forced air incubator. I set 40 guinea eggs in it about 2 months ago. Temp was 99.5 and humidity was around 50%. I candled the eggs and only had 7 that were fertile and growing. Luckily, all 7 hatched out. I am hoping to get 20-30 Guineas to raise. I borrowed a friends Still air incubator and I literally cooked 2 batches of eggs due to a faulty thermometer. (I just figured this out this week, when I cross referenced to another thermometer. The one I was using was about 5 deg cold. (When I had the still air incubator at 101-102, it was probably at 105-106. That leaves me to my 4th batch in my incubator. I candled all 42 on day 10 and not a single one is growing. We have 10 females and 2 males. We see them mating. I eat Guinea eggs for breakfast and I can see what I believe is the bullseye on some of the yolks. They were on a 18% layer crumble from a local mill, but just this week we started to transition to a 16% non Gmo crumble from another mill that supplies our broiler feed.
 

hysop

Hammy Cute as a Button
Premium Feather Member
Sep 16, 2019
3,873
13,788
676
SW Georgia
Guinea eggs are hard to candle. Do you mark them and put them back or at least do an eggtopsy to verify nothing was growing?
 

hillbillywelder

Hatching
Jun 6, 2020
7
1
8
I have a really bright LED light for candeling. I checked the last batch from the still air incubator and nothing was growing.
 

EarlJ

Chirping
May 18, 2020
136
295
80
Northern Ohio
I've read that Guineas mostly pair off and remain generally monogamous. With only 2 males, your problem may be gender disparity. That would explain why you went 7 for 40 (or 17.5%)... if only 2 of your 10 females are producing fertilized eggs, that would be about 20% of the eggs you're gathering. Seems too close to be a coincidence.

Don't know how you'd go 0 for 42 though, unless the hens being fertilized have their clutches hidden away somewhere.
 

hysop

Hammy Cute as a Button
Premium Feather Member
Sep 16, 2019
3,873
13,788
676
SW Georgia
I have a really bright LED light for candeling. I checked the last batch from the still air incubator and nothing was growing.

Did you crack open the eggs that you removed to ensure they weren't developing?

I always do an eggtopsy even if I am 100% sure they are goners. I like to investigate.

I had my still air incubator go crazy one day and the temps rose to 107 F

Thankfully my all my batch of chicken eggs survived, but that's why I no longer use still air incubators.
 

hysop

Hammy Cute as a Button
Premium Feather Member
Sep 16, 2019
3,873
13,788
676
SW Georgia
I agree with @EarlJ guineas pair off and mate with only that one. It is recommended for guineas to have a 1:1 male to female ratio. So that could be the reason your eggs are not being fertilized.

I must have missed where you stated you had 10 females and 2 males.

I have the opposite problem, no females and all males. Wish we could do some trading haha, I have keets coming in, hopefully a few are female.
 

hillbillywelder

Hatching
Jun 6, 2020
7
1
8
Did you crack open the eggs that you removed to ensure they weren't developing?

I always do an eggtopsy even if I am 100% sure they are goners. I like to investigate.

I had my still air incubator go crazy one day and the temps rose to 107 F

Thankfully my all my batch of chicken eggs survived, but that's why I no longer use still air incubators.

I cracked all 42 from the still air incubator.
 

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