# How do you calculate your hatch rate?

Discussion in 'Incubating & Hatching Eggs' started by shelleyb1969, Mar 30, 2009.

1. ### shelleyb1969Star Bright Farm

Ok, I completely get how you calculate fertility with eggs. But I'm totally confused on how you calculate your hatch rate. Is it based on the beginning number of eggs put into the incubator that actually make it through hatch? Or is it based on how many eggs are placed into the hatcher that actually make it through hatch? And if it's neither, can someone please help!

3. ### gamebirdsonlyOverrun With Chickens

6,405
138
321
Mar 5, 2007
UTAH
I count mine based on how many developed. So if I put 20 eggs in and after the hatch I count the chicks that hatched and then crack all the eggs that hadn't hatched and if there was chicks in them I count them. The ones that had no development don't count.

4. ### shelleyb1969Star Bright Farm

Quote:That's what I was thinking. So no development is factored into the fertility rate, correct?

5. ### gabrielle1976Overrun With Chickens

5,561
57
281
Feb 21, 2009
Columbia river gorge
my first eggs I set 2 eggs one developed and one didnot do anything was completly clear when I tossed it after day like 11 so when little miss noisey hatched wensday I hada 100% hatch right

6. ### Farm FrenzyChillin' With My Peeps

Dec 16, 2008
Oak Hill, Florida
I also do mine on the developed ones, not the ones I discard. Take the number that hatch and divide it by the toal number set (remember not the ones discarded). Then multiply by 100.

7. ### shelleyb1969Star Bright Farm

Quote:That's what I would say....but your fertility rate is only 50%.

8. ### gamebirdsonlyOverrun With Chickens

6,405
138
321
Mar 5, 2007
UTAH
Quote:yes That is how I would look at it.

9. ### shelleyb1969Star Bright Farm

Thanks everyone. You all confirmed what I was thinking, but I just wanted to make sure. My bantam Orp roo has been doing well in the fertility department, and I've hatched a few clutches...so now I need to calculate my hatch rates from them. But then again, good hatch rates and shipped eggs very seldom go hand in hand.