#germanshepherd #linebreeding
, #inbreeding,#outcrossing,#inbreeding,#linebreeding,#outcrossing,#InbreedingCoefficient #germanshepherd #Homozygotes #Heterozygotes #prepotent #germanshepherd_corner
#Kinship #Inbreeding #VonGontaHaus #Genetics #phenotype #genotype #narrowSenseHeritability #broadSenseHeritability #breeding #selection #traits #breedingValue #population #estimatedBreedingValues #Prepotency #pedigree #DNA #quantitativeTrait #populationGenetics #pureLine #selectiveBreeding #artificialSelection #phenotypicTraits #breeds #animalBreeding
Line Breeding and Inbreeding Continued. The mechanics of dog breeding and creating a line of dogs (or even a separate dog breed) is explained. This is meant to be educational in nature.
Breeding good dogs is an art and not a science. Yet a breeder needs to breed consistent breed type using the AKC approved standard for each breed. Many people are against any kind of close breeding but that is simply ignorant and the fact that many breeders think this is taboo/incest breeding think of the human taboos against that. But breeds were created in the first place by inbreeding and creating very high quality dogs involves intelligent line breeding. Many genes are polygenic in nature and not individually passed. Some genes are sex linked to the X or Y chromosome. This video explains some of the benefits weighted against the risks of this approach. We will discuss Wright's Coefficient of Inbreeding versus Hardiman's Coefficient in later part of this series.
We know that know inbreeding has two consequences that matter to a breeder, one positive (uniformity and prepotency) and one negative (loss of vigor and fertility). Therefore, it would be useful to be able to calculate the degree of inbreeding of an animal because it would make these effects more predictable. This was important because these two effects were at odds with each other; breeders could increase predictability and uniformity by inbreeding, but not without also having detrimental effects on an animal’s health and fertility. Breeders couldn’t just keep inbreeding and inbreeding to get better and better dogs; with each incremental improvement in uniformity and homozygosity, there would be a price to pay in health, vitality, and reproductive performance, traits that are collectively referred to as “fitness”. The short-term gain in consistency from inbreeding was paid for by a longer-term penalty in viability. For those in the business of agriculture, which dog breeding is, it was critically important that the balance between the positive and negative be controlled. Producing great dogs today would be counterproductive if the ability to produce new stock in the future was diminished. How do you a balancing act therefore? This video attempts to explain it.
Please refer to earlier video on line breeding/inbreeding/outcrossing:
Intro video:
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Part1:
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Part2:
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Part3:
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Part4:
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CONTACT INFO:
EMAIL: VonGontaHaus@gmail.com
PHONE: +1 (413) 679-7994
website: [ Ссылка ]
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Excellent book on dog breeding:
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reference websites:
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