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<blockquote data-quote="MY" data-source="post: 108174" data-attributes="member: 1649"><p>Greenwillow,</p><p>I think 50% is a safe percentage, and still allows one to narrow the gene pool and increase uniformity. </p><p></p><p>On the other hand, with straight 50% stock and nothing tighter to infuse with the other segments of the family where that particular ancestor may be down to 25% or 12.5%, it becomes increasingly difficult to maintain a 50% emphasis down through the generations without painting yourself into a corner, or ultimatley sacrificing that higher percentage of influence in the pedigrees. </p><p></p><p>Mind you, all of this is on paper, and what is really important is capturing "the essence" of the traits that one is breeding for regardless of percentage, but it's nice to maintain the influence "on paper", as well as in type. The objective of maintaining a 50% influenece becomes substantially easier if you have some 75% or 87.5% inbred stock to maintain the goal of 50% emphasis on the "target" ancestor. This gives you many other breeding options. You can breed the family much longer without an outcross if you set yourself up well in the beginning. Unfortunately, most people that set out to breed in this way have no experience to bank on, and usually fail miserably. Then, "inbreeding" gets the bad rap, instead of placing the blame where it belongs..................... on the people who do not understand the principles of inbreeding. </p><p></p><p>For Example:</p><p>I have 3 foundation animals of my canine family. </p><p>Some are as tight as 87.5% on the foundation ancestor:</p><p>Some are 50% and the foundation ancestor is deceased:</p><p>Some are 50% with the foundation ancestor very much alive. </p><p>Others are a blend of the three like 62.5% 25% and 12.5%.</p><p></p><p>Where I am only at 50% and the foundation animal is deceased, I'm finding it difficult to maintain the 50%. I sure wish that some of his 75% offspring were still alive, it would make my quest in maintaining him as an integral part of this family much easier. Nevertheless, he <strong>will</strong> live on through his progeny, it just becomes a bigger challenge to maintain correct structure, performance, size, and fertility as tight as they must be bred now as we move along deeper in this 15 year old endeavor.</p><p></p><p>If anyone doubts the efficacy of these same principles in the cattle industry, one only needs to look to the WYE Angus or the Line-One Herefords to see how it has been done successfully for many decades now. Most folks are probably better off sticking with crossbred, or purebred but outcrossed cattle though, unless they have some extensive inbreeding background in another discipline, or a successful mentor to help them along.</p></blockquote><p></p>
[QUOTE="MY, post: 108174, member: 1649"] Greenwillow, I think 50% is a safe percentage, and still allows one to narrow the gene pool and increase uniformity. On the other hand, with straight 50% stock and nothing tighter to infuse with the other segments of the family where that particular ancestor may be down to 25% or 12.5%, it becomes increasingly difficult to maintain a 50% emphasis down through the generations without painting yourself into a corner, or ultimatley sacrificing that higher percentage of influence in the pedigrees. Mind you, all of this is on paper, and what is really important is capturing "the essence" of the traits that one is breeding for regardless of percentage, but it's nice to maintain the influence "on paper", as well as in type. The objective of maintaining a 50% influenece becomes substantially easier if you have some 75% or 87.5% inbred stock to maintain the goal of 50% emphasis on the "target" ancestor. This gives you many other breeding options. You can breed the family much longer without an outcross if you set yourself up well in the beginning. Unfortunately, most people that set out to breed in this way have no experience to bank on, and usually fail miserably. Then, "inbreeding" gets the bad rap, instead of placing the blame where it belongs..................... on the people who do not understand the principles of inbreeding. For Example: I have 3 foundation animals of my canine family. Some are as tight as 87.5% on the foundation ancestor: Some are 50% and the foundation ancestor is deceased: Some are 50% with the foundation ancestor very much alive. Others are a blend of the three like 62.5% 25% and 12.5%. Where I am only at 50% and the foundation animal is deceased, I'm finding it difficult to maintain the 50%. I sure wish that some of his 75% offspring were still alive, it would make my quest in maintaining him as an integral part of this family much easier. Nevertheless, he [b]will[/b] live on through his progeny, it just becomes a bigger challenge to maintain correct structure, performance, size, and fertility as tight as they must be bred now as we move along deeper in this 15 year old endeavor. If anyone doubts the efficacy of these same principles in the cattle industry, one only needs to look to the WYE Angus or the Line-One Herefords to see how it has been done successfully for many decades now. Most folks are probably better off sticking with crossbred, or purebred but outcrossed cattle though, unless they have some extensive inbreeding background in another discipline, or a successful mentor to help them along. [/QUOTE]
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