In fall/winter, especially, this question is sometimes asked several times a day. The article has your answers!
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/20763/pnw565.pdf
Generally, your answers are:
Decreasing day length
Molt
Broodiness
Flock health
Age
Poor nutrition
Stress
See article for the full explanation of each cause.
Adding articles to supplement the first one since some don't feel it was entirely correct--the main problem is that you can't generalize about all hens, but you have to consider the general information as your starting point. The basic causes listed are correct.
http://edis.ifas.ufl.edu/ps029
http://www.thepoultrysite.com/articles/723/troubleshooting-egg-production-problems
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/20763/pnw565.pdf
Generally, your answers are:
Decreasing day length
Molt
Broodiness
Flock health
Age
Poor nutrition
Stress
See article for the full explanation of each cause.
Adding articles to supplement the first one since some don't feel it was entirely correct--the main problem is that you can't generalize about all hens, but you have to consider the general information as your starting point. The basic causes listed are correct.
http://edis.ifas.ufl.edu/ps029
http://www.thepoultrysite.com/articles/723/troubleshooting-egg-production-problems
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