From what i understand just a diet more rich in beta carotene will produce a richer looking yolk. Seems like the chicken’s lifestyle would have other effects, too. And yeah, in the US eggs come throughly washed, which removes a layer on the outside that would otherwise keep them fresh at room temp. I think the salmonella thing is more related to the sanitary conditions of the farm - I.e. whether the chickens are infected with salmonella. Farms have cleaned up in that respect over the past couple decades and it’s much less prevalent than it was at one time.
Salmonella is 50x less prevalent in the EU because they vaccinate their chickens against it. The reason they vaccinate is because they do not wash the eggs.
From what i understand just a diet more rich in beta carotene will produce a richer looking yolk. Seems like the chicken’s lifestyle would have other effects, too. And yeah, in the US eggs come throughly washed, which removes a layer on the outside that would otherwise keep them fresh at room temp. I think the salmonella thing is more related to the sanitary conditions of the farm - I.e. whether the chickens are infected with salmonella. Farms have cleaned up in that respect over the past couple decades and it’s much less prevalent than it was at one time.
https://www.npr.org/sections/thesalt/2014/09/11/336330502/why-the-u-s-chills-its-eggs-and-most-of-the-world-doesnt#:~:text=Cooking%20usually%20kills%20the%20bacteria,hens%20are%20vaccinated%20against%20salmonella.
Salmonella is 50x less prevalent in the EU because they vaccinate their chickens against it. The reason they vaccinate is because they do not wash the eggs.
I see. Maybe I was thinking of Europe when I heard salmonella had been reduced so much.