23 weeks is pretty young...it could be they are just getting all the kinds out of their laying gear. It COULD be the change in weather, but again, it does make me wonder why you would get none. I mean, I would think you'd still get an egg here and there. If it were me, I'd try to rule out egg eating.
Regarding wormers, there are not a whole lot of extremely effective ones out there' there's actually an all-natural one made (I believe) in the UK called VermX. I've heard very good things about it. Other than VermX, the only one I'd trust to absolutely get all worms out is Ivermec Eprinex, which is actually a cattle wormer. Again, do a search on here for it if you're interested in learning more, because there has been lots of discussion about it.
At 23 weeks, I would be somewhat surprised if they had a worm load big enough to make them stop laying.
Sneezing is not good...unless it's from the dust, other atmospheric particles, or use of chemicals (such as spraying fields) close by, I would most definitely begin to worry about sneezing. chickens seem to easily get respiratory issues, and keeping their area clean & dry is the biggest key to making sure they don't get them. It's tough, though, when it rains nonstop!
Regarding wormers, there are not a whole lot of extremely effective ones out there' there's actually an all-natural one made (I believe) in the UK called VermX. I've heard very good things about it. Other than VermX, the only one I'd trust to absolutely get all worms out is Ivermec Eprinex, which is actually a cattle wormer. Again, do a search on here for it if you're interested in learning more, because there has been lots of discussion about it.
At 23 weeks, I would be somewhat surprised if they had a worm load big enough to make them stop laying.
Sneezing is not good...unless it's from the dust, other atmospheric particles, or use of chemicals (such as spraying fields) close by, I would most definitely begin to worry about sneezing. chickens seem to easily get respiratory issues, and keeping their area clean & dry is the biggest key to making sure they don't get them. It's tough, though, when it rains nonstop!