- Thread starter
- #21
It is pretty well known that the F1 progeny of laying hybrids (for example the f1 progeny of the amazing Golden 300 laying duck) will NOT be as productive as the hybrid parents. And so on.
This is the basis of my determination to retain as breeders fine layers from the sex linked birds I will breed. Most likely, if one were to just breed randomly these sex links and their progeny, the rate of lay would keep decreasing to a certain point. This is also why one could argue that the f1 offspring of sex links may NOT produce as well as their parents.
In fact, they probably will not. This is where careful selection comes in.
It seems that some people think that sex links were created for the sole purpose of having babies that could be easily sexed. It is pretty clear that that is NOT the reason for making sex links (though it could be a secondary motive for sure, or a primary motive which took a back seat once it was discovered how well these sex links produced).
Sex links were made because they could lay more eggs. That is why sex links are described as having 'hybrid vigor'. Hybrid vigor can have nothing to do with the color of the fluff on a baby chick!
Hybrid vigor seen primarily as laying prowess, is why sex links were created, it seems (as well as their fine health, obviously).
The hybrid offspring of two so called pure breed parents, depending on the breed of the parents, can out-produce their mothers (or their paternal aunts). Why? Because the cross produces hybrid vigor.
This vigor WILL NOT generally persist if you then breed these first generation sex link offspring. This is why I expect there will be some loss of laying prowess in the offspring of the sex link parents I will breed.
Pure Parents
then
sexlinked offspring with hybrid vigor/health and laying prowess
then
non sexlinked offspring with lesser laying prowess
then from these last birds you begin more careful selection, depending on your goals.
So yes, the f1 offspring of two sexlinks should not produce as well as the mother, possessed as she was of 'hybrid vigor'.
This may be the main reason, if not the sole reason, why alot of farmers just buy new flocks of sex links every one or two years rather than breeding them: precisely because the offspring of the sex links will NOT be as productive.
This is the basis of my determination to retain as breeders fine layers from the sex linked birds I will breed. Most likely, if one were to just breed randomly these sex links and their progeny, the rate of lay would keep decreasing to a certain point. This is also why one could argue that the f1 offspring of sex links may NOT produce as well as their parents.
In fact, they probably will not. This is where careful selection comes in.
It seems that some people think that sex links were created for the sole purpose of having babies that could be easily sexed. It is pretty clear that that is NOT the reason for making sex links (though it could be a secondary motive for sure, or a primary motive which took a back seat once it was discovered how well these sex links produced).
Sex links were made because they could lay more eggs. That is why sex links are described as having 'hybrid vigor'. Hybrid vigor can have nothing to do with the color of the fluff on a baby chick!
Hybrid vigor seen primarily as laying prowess, is why sex links were created, it seems (as well as their fine health, obviously).
The hybrid offspring of two so called pure breed parents, depending on the breed of the parents, can out-produce their mothers (or their paternal aunts). Why? Because the cross produces hybrid vigor.
This vigor WILL NOT generally persist if you then breed these first generation sex link offspring. This is why I expect there will be some loss of laying prowess in the offspring of the sex link parents I will breed.
Pure Parents
then
sexlinked offspring with hybrid vigor/health and laying prowess
then
non sexlinked offspring with lesser laying prowess
then from these last birds you begin more careful selection, depending on your goals.
So yes, the f1 offspring of two sexlinks should not produce as well as the mother, possessed as she was of 'hybrid vigor'.
This may be the main reason, if not the sole reason, why alot of farmers just buy new flocks of sex links every one or two years rather than breeding them: precisely because the offspring of the sex links will NOT be as productive.
