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 Post subject: Brother sister mating?
PostPosted: Mon Mar 17, 2008 3:30 pm 
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Champion Bird
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Can it be done, should it be done, or if you dont really have a choice, what will the results be? Will it harm my breeding program for the future?


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 Post subject: Can it be done
PostPosted: Mon Mar 17, 2008 3:54 pm 
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Prime Pekin
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Yes. Should it be done- depends what you are trying to breed.
What will you get- you will get a concentration of the genes present in the birds,both good & bad, giving a 'purer' strain. If you do it, and most pure breed chook owners do, you will have to cull hard. No molly coddling & breeding from weak birds.


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PostPosted: Mon Mar 17, 2008 6:06 pm 
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I saw a show on SBS a couple of weeks ago about how the white lab rat was developed. The scientists bred brother to sister for something like 8 generations, culling anything that was weak, until they had the purest strain of rats with no bad recesives, each rat was nearly identical!

Now, 8 generations might be a bit excessive for the backyard chook breeder, but the principles are the same. It really comes down to how much time/space/money you've got to breed the large numbers required to cull effectively.

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PostPosted: Mon Mar 17, 2008 8:48 pm 
as blackdotte says you are breeding so that the birds are very similar. it reduces variability. why do you want to? there are good points and bad points. in some cases you may want a great deal of variability as this may increase disease resistance, greater chances of variability increases the chance of some birds surviving and passing on their better genes. if your birds ar not quite what you want greater variability from not inbreeding gives you a greater chance of finding what you are looking for. inbreeding tends to lock in the good stuff as well as the bad stuff.
k.


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 Post subject:
PostPosted: Mon Mar 17, 2008 9:01 pm 
bad things i have unwittingly fixed into my birds at times: split wing, bent breast bone, comb defects, missing toe nails, susceptability to CRD.
k.


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PostPosted: Mon Mar 17, 2008 10:13 pm 
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Showy Hen
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A friend of mines chooks breed with each other, he is up to father mating grand chick or even great grand chick,

is it possible for them to become retarded like the stereotypes for example - an extra foot :shock: or somthing like that?..........


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 Post subject:
PostPosted: Tue Mar 18, 2008 10:30 am 
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Champion Bird
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i want to do it because one of the sons out of the original trios is a far nicer bird than his father. I have heaps of sisters for him to go over, as well as the two females from the original trio. Have I lost anyone? :shock: .

What i'm basically trying to say is that I would rather breed from the son, rather than the father if i can. I just wanted to make sure I wasnt going to harm the breeding program


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PostPosted: Tue Mar 18, 2008 11:00 am 
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After doing an outcross, often breeders will do a brother-sister mating to strengthen and lock in genes to make up a new line. A line that is already well developed its best to avoid doing this cross with I think.

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 Post subject:
PostPosted: Tue Mar 18, 2008 11:12 am 
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Champion Bird
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so would you suggest father daughter mother son?


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PostPosted: Tue Mar 18, 2008 11:22 am 
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chook person wrote:
so would you suggest father daughter mother son?



chook person,
I recommend following a line breeding chart to start with, remembering the points people have posted above, as you only want to breed from the best birds with strong constitution etc.

You can find a chart on this link:
viewtopic.php?t=1304

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 Post subject: Mating
PostPosted: Tue Mar 18, 2008 11:23 am 
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Prime Pekin
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Father X daughter & mother X son will give a greater degree of inbreeding than a sibling cross.


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PostPosted: Tue Mar 18, 2008 1:11 pm 
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Champion Bird
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I'm not sure about anyone else but I have had a quick look at that chart and was a little confused


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PostPosted: Tue Mar 18, 2008 1:15 pm 
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chook person wrote:
I'm not sure about anyone else but I have had a quick look at that chart and was a little confused


keep looking at the chart, as it takes more than a quick look :) maybe print it out

blue for boys, pink for girls. Cross two birds to start with, then next line is resulting progeny, and tells you what to cross each year. :)

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 Post subject:
PostPosted: Tue Mar 18, 2008 7:15 pm 
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what happens if the birds mate with another bird with only one of the same parents? do they still count as being brother sister?


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PostPosted: Wed Mar 19, 2008 10:39 am 
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candijane wrote:
what happens if the birds mate with another bird with only one of the same parents? do they still count as being brother sister?


They would be called half brother or sister.

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