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Inbreeding And Breeding Practices In Dogs: Genetic Analysis

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By selectively breeding dogs for appearance, the gene pool of the different breeds is shrinking at an alarming rate. In the article, “Genetic diversity, inbreeding and breeding practices in dogs” by Leroy Grégoire, the topic of the genetic pool in dogs is discussed as an ill effect selective breeding has on it. The article tests the gene pool of dogs and comes to the conclusion of a decreasing trend in the data. Grégoire (2011) addressed the decrease of the gene pool in dogs by saying, “Since the basis of artificial selection is that only a limited number of chosen animals are allowed to reproduce, it is logical to find that there is a large inequality in the use of breeding animals in domestic species” (p. 179). In doing so, the genetic diversity …show more content…

This in turn reduces the gene pool and causes inbreeding to occur. Inbred animals are subjected to many genetic defects and by selectively breeding for appearance, humans are increasing the offspring’s chance of acquiring one. These genetic consequences, “… can be divided into two categories, according to whether the alleles involved have a substantial impact on breed heath or are mildly deleterious” (Grégoire, 2011, p. 179). No matter the category, this proves that there are negative genetic consequences to selective breeding, thus supporting selective breeding as unethical. The ideal breeding situation to increase the gene pool is to breed animals using outcrossing. The article states that, “… over-representation of homozygous individuals may also have positive effects, since it has the effect of increasing the exposure of recessive alleles to selection” (Grégoire, 2011, p. 180). By breeding different dogs that are homozygous dominant and homozygous recessive, the result would be a healthier offspring with the different combined genes, known as hybrid …show more content…

LUPA does not take into consideration the welfare of the dogs being used for the experiments intended to benefit mainly humans. They do not acknowledge what these dogs must go through, as they are purposefully being bred to be pleasing to the eye, yet unhealthy on the inside. They also seem to leave out the fact that there are standards that breeders must follow and it would be extremely difficult to change the breeders’ ways to fix health issues if the look of the dog not up to standards. The article, “Animal Welfare in Modern Dog Breeding” by Astrid Indrebø not only covers the strict standards of the kennel clubs, but also addresses the dog’s wellbeing and responsibilities of veterinarians. All veterinarians should know: “Any dog clearly showing physical or behavioural abnormalities shall be disqualified” (Indrebø, 2008, p. 2). What it all comes down to is the dog’s health and welfare that should be the most important factor. It is up to veterinarians to be unbiased and not look at the breed standard, but the condition of health the dog is in and evaluate the quality of life. And while there are other attempts being made to eliminate the ill effects of selective breeding, such as stricter rules Indrebø (2008) states that, “However, despite the good intentions for improving health through

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