Half Cross To Half Cross Advice Wanted.

[bunnys 1,228]

No such a thing has litter wastage, there be a job for the heavy types same has the racier types keep a few back around the sixteen week time gives Ya more of an idea how they'll developatb bunnys

[Bosun11 537]

In my expierience I've always found more even litters with second generation half cross bull's and the same further down the line BUT it was always line bred and not scatter bred.

 

If i was gonna take a punt on a half cross again i would always go for line bred stuff. IMO if the bloods good and the parents well worked your deffo on to a winner.

[sandymere 8,263]

Line bred animals are not true half crosses, a pup from two half crosses will be a mix but not F1, and not line bred. When line breeding one tends to re breed from pups that suit the work/type which is the idea of line breeding and utilises genetics rather than being led by genetics which is what happens when crossing 1st generation half crosses.

 

Beware spoiler contains science!!!!!!!!!!!!!!!!!!!!

 

 

 

 

To go back to the basic with Mendel’s experiments with peas, a plant from a green pea lineage obtained from self fecundation of its ascendants through several generations was crossed (cross fecundation) with another plant from a yellow lineage also obtained by self fecundation of ascendants. (The self fecundation through several generations of ascendants and the exclusive obtainment of individuals with the desired characteristics ensured that the individuals of the parental generation were “pure”, i.e., homozygous for that characteristic.)Considering hybridization in a trait like the colour of the flowers of a given plant species (red dominant/ yellow recessive) conditioned by a pair of different alleles, what are the phenotypical results of the first generation (F1) and the phenotypical results of the second generation (F2, formed by crossing among F1 genotypes)? What are the phenotypical proportions in F1 and F2? In relation to genotypes and phenotypes the hybridization comprises of: parental generation (P): RR (read), yy (yellow). F1 generation (RR x yy): Ry (red). F2 generation (Ry x Ry): RR (red), Ry (red), Ry (red) and yy (yellow).In the F1 generation the proportion of red flowers is 100%. In the F2 generation, the phenotypical proportion is three red (75%) to one yellow (25%).

 

 

Considering hybridization in a trait like the color of the flowers of a given plant species (red/yellow) conditioned by a pair of different alleles in relation to complete dominance (red dominant/ yellow recessive), why in the F1 generation is one of the colors missing? In this monohybridism one of the colors does not appear in the F1 generation because their parental generators are pure, i.e., homozygous, and in F1 all descendants are heterozygous (each parental individual forms only one type of gamete). Since only heterozygous genotypes appear and red is dominant over yellow the individuals of the F1 generation will present only red flowers.

 

Considering hybridization in a given trait like the color of the hair of a mammalian species (white/black) conditioned by a pair of different alleles under complete dominance (black dominant, B/ white recessive, w), how can the phenotypical proportion obtained in the F2 generation be explained? What is this proportion? In the monohybridism conditioned by two different alleles the F1 generation presents only heterozygous individuals (Bw). In F2 there is one individual BB, two individuals Bw and one individual ww. In relation to the phenotype there are in F2 two black individuals and one white individual, since black is the dominant color. So the proportion is 3:1, three black-haired to one white-haired

 

 

Bunnies it depends on what you class as litter wastage, for me a pup that doesn’t get a home because there is a pen full heavy pups that have limited use is litter wastage.

 

 

 

 

[night warrior 178]

 

I breed a litter last year half cross to half cross so makes them 2nd gen and keep 2 dog pups back at 8 weeks old you could not tell them apart from one was dark brindle and one light brindle and now at 5 month two different dogs one very heavy and one racy and rest of the litter witch all went to close friends have all gone different from heavy to racy so what ive seen with 2nd gen is its a guessing game

did the bitches throw much finer boned mate

yes mate the bitchers are finer but not much the dogs i breed the bitch whitch i own was 8 when she had the pups and the dog was 9 which a good friend owns and we have owned them from pups them self's so we breed them for our self's to carry on from there parents as it won't be long before thay go in to retirement whitch thay both deserve if the pups tern out half as good as there parents we wont have done to bad

[jake824 517]

 

 

I breed a litter last year half cross to half cross so makes them 2nd gen and keep 2 dog pups back at 8 weeks old you could not tell them apart from one was dark brindle and one light brindle and now at 5 month two different dogs one very heavy and one racy and rest of the litter witch all went to close friends have all gone different from heavy to racy so what ive seen with 2nd gen is its a guessing game

did the bitches throw much finer boned mate

yes mate the bitchers are finer but not much the dogs i breed the bitch whitch i own was 8 when she had the pups and the dog was 9 which a good friend owns and we have owned them from pups them self's so we breed them for our self's to carry on from there parents as it won't be long before thay go in to retirement whitch thay both deserve if the pups tern out half as good as there parents we wont have done to bad

i ve had quite a while to think this over and I'm really particular on how a bull cross should work and how the temperament should be so im gonna stick with what I know and trust and do the mating. Thanks for your advice

[bunnys 1,228]

Sandy its a good bit literature yas gleaned from the net has usual and Mendel was a genius of his time ,but has for animals bred for performance ,some of us look for just that performance looks and type second. Atb bunnys

[bunnys 1,228]

Jake824 I would go ahead with thy planned breeding one can think and mull on things to much you'know the quality of thy wire and dam and f they tick boxes and they nick in the breeding there will be welpps ta suit you and thy fellow hunters atb bunnys

[jake824 517]

Jake824 I would go ahead with thy planned breeding one can think and mull on things to much you'know the quality of thy wire and dam and f they tick boxes and they nick in the breeding there will be welpps ta suit you and thy fellow hunters atb bunnys

cheers bunnys.The steadiness and drive are there in the line and in previous off spring from both sire and dam I have just never bred them together and was concerned they would throw cobby short backed off spring but will run a couple of the longer finer boned ones on and put a couple out and see how they come .Cheers bud

[jeemes 4,573]

In my expierience I've always found more even litters with second generation half cross bull's and the same further down the line BUT it was always line bred and not scatter bred.

 

If i was gonna take a punt on a half cross again i would always go for line bred stuff. IMO if the bloods good and the parents well worked your deffo on to a winner.

spot on

[roybo 2,873]

Dont you know of a son to go over your bitch,May be that would be a way to go if one has done the business

[sandymere 8,263]

Sandy its a good bit literature yas gleaned from the net has usual and Mendel was a genius of his time ,but has for animals bred for performance ,some of us look for just that performance looks and type second. Atb bunnys

LOL Bunnys, other than that gained from experience performance is as much genetic as colour or height etc or breeding worker to worker programs would be pointless, or perhaps you could elaborate otherwise? I’d love to learn your counterpoint to genetics………………….

[jake824 517]

Dont you know of a son to go over your bitch,May be that would be a way to go if one has done the business

thought about that one mate but the dog I had in mind is a bit gun ho.good at his job but not quite what I'm after

[bradus 311]

That's my half x on the right and pup on the left is out of him he's 6 months in picture

[jake824 517]

That's my half x on the right and pup on the left is out of him he's 6 months in picture

nice looking dogs but to heavy for what I want bud. The bitch is a bit finer than him and the dog a lot longer bodied . That's why I was asking if the second generation threw a finer rangier dog. The stuff out of my dog is similar stamp to yours but I find they struggle for pace .

[Bosun11 537]

Line bred half cross. One side 3rd gen the other 4th. Nowt else in the mix.This dogs dam was out of the same sire as Bradus's dog.