"They don't lay as much after year 3." What?

Here's a link to some info about the decrease in eggs over a hens lifetime.

edis.ifas.ufl.edu/pdffiles/ps/ps02900.pdf

OK the link doesn't work, but can be pasted into your browser.

 

I've never kept a hen (except 1 pet) past 2 years. I may change that schedule with my current flock. At least some of them are doing great in their 2nd laying period and I now have reason to think that may continue.

Imp, I've seen just about that same information in Principles of Poultry Science, by S. P. Rose. I made some notes on a British study cited and the charts on production looked, more or less, the same.

- During the first laying period, daily production thru the months was between about 95% and 80%.
- The second laying period had daily production between about 85% and 70%.
- The third, production was between about 80% and 55%.

Commercial operations never allow their birds get to that third laying period. Their profit margins are too small. Hens, during their 3rd year, are laying about one-third less eggs than young pullets. And remember, these were production layers and I bet the flock was culled carefully to eliminate, as best as could be determined, the birds that were not laying.

Steve

edited to add: A female chick hatchs with what is essentially "infinite" potential to lay eggs. I say infinite because she will never live long enough to lay out the 500,000 or so immature ova that have been counted in a chick's ovary. She will stop laying at some time if she lives long enough. That she has become unproductive has to do with something other than that she has "run out of eggs," however. Probably, her hormonal responses that prompt egg development just do not last all that many years.

 

Quote:That was a real interesting read. Thanks

 

I have some four year old hens, a miracle, really since about half of my hatchery hens have died from internal laying and ovarian infections. They still lay several times a week when not molting, I'd say 3-4 times each week. Alot depends on the breed and the overall health of your flock.

 

Have heard of the lasting up to 8 years, but at that time, egg production is often almost nil. We want all of ours to be lifers so we hope that they are always layers to some degree. Reader's' Digest book about how to do all kinds of practical things has a page on poultry and says for max efficiency, butcher hens 3rd year after molt begins or possible wintertime slowdown.

 

Your non production line will last the longest. What some called heritage stock which is the older line stock. Other call them non show breeder stock. Show stock will have really bad production as it is mostly bred out of them. What you end up with in these lines is chickens that will not lay a huge amount the first year but will lay for many years after. Those that lay alot of eggs the first year go thru burn out.