Diseases in eggs that can spread to chicks

[FortCluck]

Can someone please tell me what diseases can be transmitted to a chick in an egg...

 

[FortCluck]

@Pyxis @Wyorp Rock @Eggcessive I was told to tag you in this thread...

I think @Wyorp Rock You saw my chick that had the cleft eyelids and one blind eye. Well another one hatched from a different farm, not mine but it has bulging eyes and it is blind in an eye.

I just don't know if any type of disease would cause this because I don't want my whole flock to suffer. I've worked so hard on my flock the past 2 years.

 

[Pyxis]

What you're talking about is called 'vertical' transmission.

Diseases that can be transmitted through the egg include Mycoplasma Gallisepticum, Ornitobacterium rhinotracheale, Newcastle's Disease, Infectious bronchitis but usually the eggs just wouldn't hatch, Mycoplasma sinoviae, Mycoplasma meleagridis, Avian encephalomyelitis, etc etc. This chart shows the major diseases and how they are transmitted. Look for 'vertical' and 'transovarian' as those are the ones you're talking about.

I'm not sure that any of them are necessarily the cause of the problems with your chicks, though.

 

[Eggcessive]

I think that some physical defects can be hereditary, but some may happen spontaneously. The bulging eye with blindness has been a fairly common deformity here on BYC threads over the years. Sometimes it only affects one eye, sometimes both. Here are some threads:
https://www.backyardchickens.com/threads/baby-chick-with-bulging-eye.782753/https://www.backyardchickens.com/threads/baby-chick-hatched-with-one-eyeball-bulging.906917/

 

[FortCluck]

I think that some physical defects can be hereditary, but some may happen spontaneously. The bulging eye with blindness has been a fairly common deformity here on BYC threads over the years. Sometimes it only affects one eye, sometimes both. Here are some threads:
https://www.backyardchickens.com/threads/baby-chick-with-bulging-eye.782753/https://www.backyardchickens.com/threads/baby-chick-hatched-with-one-eyeball-bulging.906917/
View attachment 2012646

My husband freaked me out a bit saying it could be a disease, but I could not find anything online about any disease that would cause it.

It puts me at ease that other people have dealt with chicks with bulging eyes.

 

[FortCluck]

What you're talking about is called 'vertical' transmission.

Diseases that can be transmitted through the egg include Mycoplasma Gallisepticum, Ornitobacterium rhinotracheale, Newcastle's Disease, Infectious bronchitis but usually the eggs just wouldn't hatch, Mycoplasma sinoviae, Mycoplasma meleagridis, Avian encephalomyelitis, etc etc. This chart shows the major diseases and how they are transmitted. Look for 'vertical' and 'transovarian' as those are the ones you're talking about.

I'm not sure that any of them are necessarily the cause of the problems with your chicks, though.

Thank you so much for your help. I'm not sure if a disease would cause what is going on. I think I'm a bit overwhelmed at this point because when it was just the one with the cleft eyelids, it wasn't nerve-wracking but now that there's two of them it is nerve-wracking.