The following is based on an excerpt from the 1999 edition of The Total German Shepherd Dog by Fred Lanting, and may not be reproduced without approval. © 2003. Contact the principal author at for permission to quote. Some of the following charts and calculations have been contributed by a geneticist friend, John B. Cole, …
Return to Part 1 Adding the Row ‘Emma’ Now that we have added a second row to form a column, a comment is in order that will greatly reduce your labor. Look ahead to the completed Table 3e, for a moment. If you draw a diagonal line down the matrix from the cell Edmund-Edmund to …
Return to Part 2 In Part 2, we were in the middle of a discussion of inbreeding’s dependence on relationship. You need to read Parts 2 and 3 in close consecutive timing. The following is a continuation of that subject. Let us say, for the sake of argument, that we are thinking about mating Emma …
Continued from PART 4 MORE ON INBREEDING The dog world seems unwilling to learn from science in some respects, and inbreeding-linebreeding is one of those areas. I say “one” because there is no real difference or dividing line between the two terms; linebreeding is simply descriptive of inbreeding on animals a little further back in …
Continued from PART 3 Figure 6. Seven Generations From an Outcrossing Event #’s refer to Outcross generations 1–{ from the 2–{ Pure outcross 3–{ Pure “event” 4–{ Pure 5–{ Pure 6–{ Pure These “Pure Dogs” 7–{ Pure are different individuals Pure “Outcross” represents the individual(s) of another breed “Pure” represents a purebred individual of the …
Continued from PART 2 FY = 0. This example emphasizes a point made earlier: inbreeding is dependent on relationship. In small breeds, it often happens that there are a few very influential individuals to whom most of the population is related. These elevated levels of relationship can make it difficult to plan matings free …
Continued from PART 1 Adding The Row ‘Emma’ Now that we have added a second row to form a column, a comment is in order that will greatly reduce your labor. Look ahead to the completed Table 3 e, for a moment. If you draw a diagonal line down the matrix from the cell …
IT’S ALL IN THE GENES As dog breeders, we engage in genetic “experiments” each time we plan a mating. The type of mating selected should coincide with your goals. To some breeders, determining which traits will appear in the offspring of a mating is like rolling the dice – a combination of luck and chance. …