Autosexing Delawares........Help

[Autosexingwares]

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Rhodebars are Wildtype Barred Columbian restricted and their chicks are Autosexing so its possible Tim

Thanks nica I think its feasable, I like rhodbars too, would rhodebars work instead of silver welsummers?

 

[nicalandia]

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Rhodebars are Wildtype Barred Columbian restricted and their chicks are Autosexing so its possible Tim



Thanks nica I think its feasable, I like rhodbars too, would rhodebars work instead of silver welsummers?

while Rhodebars seem to be the right choice because they have Co(same as Delawares) Sexlinked Barring(same as Delawares) and are already autosexing(e+ B) I would NOT recomend using them, why? because they carry a host of other unwanted genes like sex linked gold(s+) mahogany(Mh) and other red enhancers that are recessive and that will plage you for years.... stick with Silver Duckwing Welsummers...

 

[nicalandia]

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Oh Boy..!

 

[tadkerson]

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I can randomly pull chicks of various phenotypes from a box of 100 chicks ( 50 females and 50 males) and have a 50 % chance of getting the sex of the chicks correct. That makes them autosexing. No. To have an autosexing breed the sexing of the offspring must be close to 100%. If sexing is not close to 100 %, the breed is not autosexing. Simple.

Tim

 

[tadkerson]

Thanks nica I think its feasable, I like rhodbars too, would rhodebars work instead of silver welsummers?


Good luck with your auto-sexing delaware project. I hope you realize it will take years of breeding ( 5 or more) and hundreds of chicks to get a bird that is even close to auto-sexing. And even then you will not have an auto-sexing delaware. I will leave the leave this string.

The following is an abstract from the work at a British Columbia University in their work with the redbar a barred red bird.

A study of the colour pattern of Redbar chicks was undertaken to ascertain if the male and female chicks could be distinguished and if so, to devise a system of auto-sexing them. During the 1946 season, 1080 chicks from 36 female and 4 male parents were handled. Seventeen characteristics were described on each parental bird and forty-one on each chick. Down colour differences were found and the auto-sexing accuracy was improved from 62.1% to 94.0% with 80.0% for the whole season. During the 1947 season, 542 chicks from 38 female and 6 male parents and 345 non-pedigreed pure Redbar chicks were handled. Twenty-two characteristics were described on each parental bird and eleven on each chick. Auto-sexing accuracy varied from 91.4% to 98.5% with 93.6% for the whole season. Characteristics of the heads and bodies of the chicks used to obtain these accuracies were as follows: Females - uniform brown colour, brown head stripes, brown back stripes. Males - mottled heads and backs, white head spots, very light heads and backs, short T or I shaped brown head stripe, two whitish back stripes.

Tim

 

[Autosexingwares]

Good luck with your auto-sexing delaware project. I hope you realize it will take years of breeding ( 5 or more) and hundreds of chicks to get a bird that is even close to auto-sexing. And even then you will not have an auto-sexing delaware. I will leave the leave this string.

The following is an abstract from the work at a British Columbia University in their work with the redbar a barred red bird.

A study of the colour pattern of Redbar chicks was undertaken to ascertain if the male and female chicks could be distinguished and if so, to devise a system of auto-sexing them. During the 1946 season, 1080 chicks from 36 female and 4 male parents were handled. Seventeen characteristics were described on each parental bird and forty-one on each chick. Down colour differences were found and the auto-sexing accuracy was improved from 62.1% to 94.0% with 80.0% for the whole season. During the 1947 season, 542 chicks from 38 female and 6 male parents and 345 non-pedigreed pure Redbar chicks were handled. Twenty-two characteristics were described on each parental bird and eleven on each chick. Auto-sexing accuracy varied from 91.4% to 98.5% with 93.6% for the whole season. Characteristics of the heads and bodies of the chicks used to obtain these accuracies were as follows: Females - uniform brown colour, brown head stripes, brown back stripes. Males - mottled heads and backs, white head spots, very light heads and backs, short T or I shaped brown head stripe, two whitish back stripes.

Tim

Good luck with your auto-sexing delaware project. I hope you realize it will take years of breeding ( 5 or more) and hundreds of chicks to get a bird that is even close to auto-sexing. And even then you will not have an auto-sexing delaware. I will leave the leave this string.


Tim

you are too negative Tim, I will go with what nica said, she seem to be sure of what he says,

 

[nicalandia]

I can randomly pull chicks of various phenotypes from a box of 100 chicks ( 50 females and 50 males) and have a 50 % chance of getting the sex of the chicks correct. That makes them autosexing. No. To have an autosexing breed the sexing of the offspring must be close to 100%. If sexing is not close to 100 %, the breed is not autosexing. Simple.

Tim

now you calling Rhodebars/Hambars not True Autosexing?

 

[nicalandia]

you are too negative Tim, I will go with what nica said, she seem to be sure of what he says,

Tim just likes to Argue with me, his knowledge on genetics is Outstanding, I think he has a doctorate on it...


oh and I am a He...LOL