Helping a hen with reproductive issues with people calcium, but how much to give?

azygous

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Just a while ago here on this forum we were discussing how much calcium to give a hen, and some of us were astonished to discover that we were reading the label on the bottle of calcium wrong. Up until now, I, and also quite a few other people, have assumed that when the label on the front of the bottle says 630mg that means 630mg in each tablet. I'm referring to Equate Calcium Citrate or Citrical which is what we usually recommend for treating hens as the citrate form of calcium is most easily digested, therefore it works fastest. So I've been telling people to give their sick hens one 630mg tablet. As I am just finding out, this is wrong.
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Often, we suggest substituting Tums or another calcium carbonate antacid when there is no other form of calcium supplement on hand. I have in hand a bottle of Equate Antacid Chews and it states on the label it is 750mg calcium carbonate. You might think that means each tablet contains 750mg. Come to find out, this is not the amount of calcium in each tablet. Confused? It's going to get worse before it gets clearer.

In addition to people here in the US, we have people from countries all over the world who come to BYC for help with sick chickens, and we who try to help need to tell them how much calcium to give. Luckily, the metric system of measurement is the same all over. One miligram (mg) is one miligram wherever you are in the world. However, when we pick up a bottle that says 630mg on the front, that is not necessarily the amount of calcium in each tablet. I would like for BYC users in other countries to join this discussion and let us know if the calcium bottles they buy state the actual content of each tablet on the front of the bottle. Because here in the US, in order to find out how much is in each tablet requires hunting down some very small print on the back of the bottles.

On my bottle of Equate Calcium Citrate the front of the bottle says that there is 630mg of calcium in each serving. Notice it does not say "tablet". On my bottle of Equate Antacid Chews it just says 750mg calcium carbonate. Notice it doesn't say "tablet" or even "serving". But on the back of the bottle under Drug Facts, it states "active ingredient in each tablet calcium carbonate 750mg", but then turning the bottle further I get to small print that says under "Drug Facts continued" that the serving is "one to two tablets, but down below that under "other information" it states that each tablet contains 300mg of calcium. Does your head hurt yet? Mine does.

You may have noticed I have mentioned two types of calcium - calcium citrate and calcium carbonate. There is a third type, calcium gluconate, but I don't mention it because the actual calcium content is very low and isn't helpful in the circumstances where we're using calcium to treat reproductive issues in chickens. In fact, calcium carbonate has twice the calcium that calcium citrate has. However, calcium carbonate is much more difficult for a body to digest, therefore absorption is much slower than calcium citrate. This is why we usually suggest calcium citrate for sick hens. It goes to work faster and fast is what we want when our hen is in a reproductive crisis. Now, back to figuring out how much we should give.

I've been recommending calcium for hens with reproductive issues for many years. I've been treating my own hens with calcium ever since, as a novice many years ago, I asked in a thread here on BYC what to do about thin shell eggs. Since then, I've educated myself on the role of calcium in the reproductive system of hens. Calcium is crucial in everything from keeping a chicken's heart beating to building shells on eggs to stimulating contractions to push the egg out. When calcium levels become low in a laying hen, it can cause thin shells, no shells, egg binding and even heart attack. So calcium is a very important tool we use to treat a sick hen. Over the years, I've used the same calcium supplement I use for myself - calcium citrate - and I have been using one tablet from the bottle that says 630mg on the front. I've experimented with less, but that size works best. But, the question is this - how much calcium am I actually recommending?

When I'm answering a distraught person with a sick hen in prolapse caused by egg binding, I don't have time to explain serving sizes and amounts in one tablet of one of the three different forms of calcium. I and the person with the sick hen just want to know how much calcium to give. It's easiest to tell them to give one tablet calcium citrate directly into the beak and be done with it. And that's what I'm going to stick with. Thankfully, calcium is not going to do a lot of immediate harm if too much is given to a hen. Too little is the greater problem as it won't be as effective and the hen could die.

If I need to be more specific about the amount of calcium to give, I will need to say a minimum of 300mg. I am hesitant, though. If others are reading the labels wrong on these calcium supplements as I have been doing, and they find a bottle that says 300mg on the front and if that refers to serving size and not the acutal amount in each tablet, then we risk the sick hen not getting enough calcium to do the job, and quite possibly enough to save the hen's life.

Wouldn't it be swell if we could call up someone in charge of labeling these supplements and say, hey, you need to put the amount of calcium in each tablet on the front of the bottle? But we know that isn't going to happen.

(Cross-posted in the Emergencies Forum)
 
You would 'think', with all the rules and regulations set with drug companies, FDA, ATF, CIA blah blah blah, their would be more direct labeling of how much per capsule/bottle set within.

I've read quite a few of the related threads you and others are involved in, so following with not much knowledge but more interest in learning.

Are you sure there's no 1-800 # you could call and sit on hold for 4 hours and finally be transfered to someone in the wrong department? 🤔
 
Let me step in here as a human healthcare worker...surprisingly, animals' and humans' bodies perform in nearly the same manner MOST of the time.
Firstly, Your comments on supplements: Dietary calcium supplements are SUPPLEMENTS. One thing people don't understand is that while drugs are highly regulated in the USA, supplements are not.
Independent studies have found that within samples of supplements across several companies and even within a single company, the label statement of how much of the active ingredient is supposed to be in a capsule/tablet/caplet, varied from zero percent (none at all) to hundreds of times higher amounts than the label stated. This seems dangerous, yet the lobbyists to Congress for the multi-billion dollar/year supplement industry have successfully prevented regulation.
Having said that, Supplements such as calcium, potassium, and phosphorus tend to be more accurate in labeling than the more exotic supplements such as red yeast rice, etc.

Next, Chickens, like people need calcium to help their hearts beat, grow strong bones, and unlike humans produce shells for eggs. Calcium needs vitamin D to be absorbed properly by us and by chickens. Most D in humans is created by sunlight interaction with skin, chicken skin is mostly shaded by the sun so they get most of their D from food/supplements added to food, and some from the oils their bodies produce when they preen.

Like anything else, too much of anything is harmful. People get kidney stones (Urolithiasis) and so can chickens. Excess dietary calcium fed to immature pullets over time can result in kidney damage that may lead to gout. Luckily chickens seem to know when to go after the extra calcium and when to leave it alone. Many folks put bowls of crushed oyster shells or egg shells out for the hens to graze on as they need it.

I'm not a vet so I cannot speak to the recommended daily intake of calcium for laying hens. Studies I've read suggest that while the size of calcium particles MAY impact absorption, other studies suggest that it isn't a big difference. Crushed egg shells are an excellent (free) source of calcium. If a chicken is getting "layer feed" and has access to crushed calcium egg shells/oyster shells, they should be ok. Signs of low calcium include soft shells and no-shell eggs.
 
Thanks for that good info @Possum-Pie. Over my life time, it seems every ten years there's a big push to get supplements regulated and lobbyists stage a huge public relations push back. Every ten years, they come out of it still unregulated. My sister's mother-in-law died as a direct result of one of the more dangerous weight loss supplements going unregulated.

Luckily, calcium isn't one of these dangerous ones. We recommend oyster shell (calcium carbonate) to supplement feed for laying hens. It's when this form of calcium supplement isn't working in a particular hen that we suggest the calcium citrate with D3 to get the hen through a crisis because it's a form that is absorbed quickly.

Most hens sunbathe. When they are lying in the sun, they usually spread their wing feathers. This is to expose as much surface area of their feathers as they can to the sun. Feathers absorb vitamin D from sunlight just as our skin does. Chickens kept cooped up in places with dark or stormy winters may not get enough vitamin D unless it is given in a supplement. This deprivation of sunlight is one of the reasons a hen can suffer from calcium deficiencies.
 
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