Basic Concepts for Breeding Dogs

Learn these basic concepts and start your breeding program on the right foot.


Basic concepts for breeding dogsKey Terms
Balance, soundness, proportion, and type are the cornerstones of successful breeding.

• Balance refers to structural symmetry allowing all parts to work in harmony. This perfect fit results from soundness and proportion. These qualities are inseparable, but not synonymous. Poorly proportioned dogs can be sound, and sound dogs can be badly proportioned.

• Soundness signifies optimum mental and physical fitness to accomplish the breed’s intended function.

• Proportion is also determined by function, evaluated by comparing the breed’s ideal length-to-height ratio.

• Type comprises all distinguishing traits like color, coat, eye shape, and temperament (etc). that define a breed to an average, rather than extreme degree.

In the Genes
Most traits are transmitted via polygenic combinations; groups of interacting genes. Many polygenic traits, like size, display continuous variation, distinct divisions do not occur and most individuals possess the trait to an average degree.

Others are expressed as threshold traits, precise combinations of genes producing a limited range of clearly defined variations for that trait.

Other traits are controlled by one gene pair. These can be homozygous if both genes are dominant or recessive for that trait; heterozygous, if a dominant gene is paired with a recessive gene, causing the recessive gene to be hidden.

Breeders rely primarily on physical evaluation and pedigree research for a balanced assessment of phenotype (physical appearance) and genotype (genetic makeup) which is never completely revealed by physical appearance.

The Fine Line
Resulting information can be utilized in three ways to enhance desirable traits and minimize undesirable variations.

1. Inbreeding, brother/sister or parent/offspring mating, is the most intensive approach. It quickly and efficiently stabilizes desirable traits and reveals hidden recessives.

2. Linebreeding, mating less closely related family members, achieves similar results in slower stages.

3. Outcrossing, mating unrelated individuals, introduces hybrid vigor, by breaking up homozygous gene pairs. This temporarily masks undesirable traits and increases unpredictability.

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kimberly   carmi, IL

2/19/2011 2:03:16 PM

Very imformative! knowledgable esspcially for me. i just started breeding and raising rat terriers last year . i need all the info i can get,the more the better. i started with my male B/w terrier and b/w female terrier . now the pups ive got they are beutiful- chocolates like pete and chocolate/white- this litter- i have a blue- solid color rat terrier male. thanks for all the info on the dog channel.

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Cynthia Marston   Sweet Home, FM

3/15/2010 7:22:26 AM

I like the hybrid vigor and unpredictability idea and hate the thought od inbreding....does that even happen in a dog pack???

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Sara   Addison, IL

3/10/2010 8:51:17 AM

Looking for a possible stud for our cairn terrier. She is going into her 2nd cycle shortly, she is very friendly and loves children. What do I need to look for in a mate?

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Sharlene   Suffern, NY

12/7/2009 4:07:24 PM

I was looking for information on pregnant female dog, and how to care for her. What are the step to ensure healthy pups?

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