What is a normal amount of chicken illnesses for a backyard flock?

[tori729]

Over the past two years of having chickens, our number one problem has been illness. We seem to not have a huge issue with predators but illnesses don't seem to be avoidable.
Timeline: 8 fully feathered pullets, no issues for a year. Hatched out a bird from a friend's eggs and bought four TSC chicks, also brought in 3 of a friends' flock adult chooks (quarantined in separate pen for a couple weeks). Total flock count: 16
Then things started going downhill. Since last winter, we've lost five to diseases, added in four chicks this spring and just lost one of them. Currently have one in the sick bay for a sour crop that still hasn't resolved.
Symptoms NEVER seem the same: one stopped walking abruptly and died within a day, one seemed to have a respiratory issue, one had huge sores on her body, one seemed to have neurological problems, one may have aspirated from having a sour crop, recently one just stopped eating and eventually couldn't walk so we put her down.
I thought maybe I needed to buy from a backyard owner instead but we have one sick and one just died from that batch. It seems random as to which ones die but when we get new chicks, we tend to lose half of them.
We clean the coop every 1-2 months, completely change out the bedding (it's off the ground so no deep litter). The chickens have a dry area under their coop, food stays dry. I usually add chicken booster or ACV or both to their water to keep minerals up. They have grit and oyster/shells available.

I've heard chickens' super power is dying so I know I'm not alone, I just wonder if this is a normal amount of sickness or if I should be concerned that I'm doing something wrong? I try to go out daily also and just observe the chickens so I can separate if they are acting off.

 

[Debbie292d]

People do things so many different ways, and there isn't a way written in stone that is the only way. You do what you learned to do to raise them and some for whatever reasons didn't make it. It could be a culmination of many things but when you can't put your finger on it, then you just have to keep trying until you can.

We've had as many as 80 silkies, counting chicks, and currently are going through the winter with around 50.

I lost one to some type of liver ailment, the vet said. She was 10 months old and from an exhibition line. Two others died we think of a head injury and one from unknown causes. These were from all different parents, so genetics is not a cause of all of them.

So this year we lost four adults and one chick out of 500 or so hatched here.

Ours have been on Kalmbach's Flock Maker (20% protein crumbles) for a few years. They rarely get anything else, and Kalmbach's Henhouse Reserve is their scratch.

Where we are is high humidity so we had to come up with ways to keep it under 70% in the coops, as higher than that and mold can start growing. We use horse bedding pellets in every coop and hutch. That dries out the poop and is maintenance free albeit changing them once a year or when needed.

We give them added vitamins and probiotics to their feed and/or water weekly.

The brooders also have horse bedding pellets. They are 4' wide so the black ceramic lamp is at one end, and they have 3 1/2' to get away from it.

For their first two weeks, I didn't trust that the well water would be good for them, as it's higher in metals, so they get bottled water, then gradually introduced to the hard water.

Hopefully, this gives you some ideas for something you could try or compare anyway.

 

[dawg53]

You have to practice strict biosecurity when it comes to chickens. Bringing eggs/birds into an existing flock from a friend, farmer down the road or next door neighbor is a recipe for health problems.
Some types of respiratory diseases can be passed through eggs, some can be carried in the air at a good distance, such as Infectious Bronchitis (IB.)
Chickens can be carriers of respiratory diseases, to include contaminating waterers and feeders which are easily spread to other birds in addition to bird to bird direct or indirect contact.

If you're going to add birds to an existing flock, it's best to order chicks from a reputable hatchery or a feed store that orders chicks from a reputable hatchery.

@tori729 Regarding symptoms NEVER seem the same:
I suspect you might possibly be dealing with Marek's disease. Hopefully I'm wrong.
I recommend that have a sick bird sent off for necropsy in order to determine what you're dealing with.
You can contact your local extension office or your state Department of Agriculture and find out how to go about sending a bird off for necropsy.

Symptoms NEVER seem the same: one stopped walking abruptly and died within a day, one seemed to have a respiratory issue, one had huge sores on her body, one seemed to have neurological problems, one may have aspirated from having a sour crop, recently one just stopped eating and eventually couldn't walk so we put her down.

 

[Eggcessive]

Sorry for your losses. Your veterinary Diagnostic Lab in Columbia, SC which is listed in the link below, can do a necropsy on a chicken that you lose and would give you some clues on what is affecting your flock. Understand that some diseases get into your flock from other people’s chicks or eggs, and they will remain until the last chickens are alive. Find out what diseases you have, and close your flock. Adding more birds when there is a chronic contagious disease, will insure they will get it or be carriers.