How do you figure your hatch rate percent?

[rebelcowboysnb]

If I set 100 eggs an 25 are clear an get tossed but the other 75 hatch then the hatch rate is 75%. I could say that I hatched 100% of all fertil eggs but the hatch rate is still 75%. If you leave those 25 out for you to understand how good you are doing thats fine but as soon as you start telling people that you get 100% hatches knowing you throw out 25% of the eggs then that becomes a lie.

If you tell the avrage person that your hatch rate is 100% then they assume you mean that you set 100 eggs an get 100 chicks.

So hatch rate is counting all eggs. Fertility has nothing to do with how many hatch an your hatching skill has nothing to do with duds.

 

[organicfoltzfamilyfarm]

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Yeah that's what I said except you explained it a lot better.

Thank you guys!

 

[lemurchaser]

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This is the way I would do it too. Except the fertility rate should be 34/42, because 34 were actually fertile.

 

[lemurchaser]

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True, but if you said you had a hatch rate of 100%, I also assume that you had fertility at 100%. If you said you had 90% fertility and 100% hatch rate, I'd assume 90/100 would actually hatch. All theoretically of course, I'd never count my chickens before they hatched.

 

[speckledhen]

Oops, did I mess up my math, LOL? I thought that didn't look right, then got distracted and forgot to recheck it. Well, anyway the hatch rate is calculated out of the total eggs that were fertile in the first place. The fertility rate is calculated out of how many were set vs how many began to develop.


And, actually, who really cares about the exact percentage unless you are a breeder trying to figure out if the rooster is doing his job? Hatch rates are defined by so many factors, including the health of the parent stock, the skill of the bator operator, the reliablity of the bator itself and the instruments you use with it. So, if you got a 100% hatch rate, you were darn lucky, not necessarily that skilled, LOL. Conversely, if you got less than a 50% hatch rate, it may have nothing to do with you at all.

 

[lemurchaser]

I think the hatch rate only matters to show that they're hatch-able eggs. I mean that if you CAN get a 90-100% hatch rate with unshipped eggs, then at least I have a hope of getting something to hatch. A low hatch rate on one batch, means nothing, but if I'm getting eggs from someone (that knows how to incubate eggs) and they can't get above 50%, I probably wouldn't bother with eggs shipped from them. There are no guarantees in that obviously, but its playing the odds.

Fertility rate shows the male is doing its job, not that they are producing offspring. Hatch rate shows their ability to produce eggs that can hatch. And like Speckled Hen said, a lot more than just the birds goes into that, but it's still something to start with. Averaging hatch rates should be the most reliable way, and then I'd exclude any hatches I knew that were messed up by the incubator/me (ie came in and the eggs were at 108 degrees).