breed (redirected from traditional breed pyramid)

breed

a group of related animals which are genotypically and phenotypically sufficiently similar to produce physically similar offspring when they are mated with each other. In most countries each breed is managed by a breed society which maintains a register of the animals that are members of the breed, and which animals shall be admitted to the register. The breed society also sets the standards for physical appearance that must be attained. See specific breed name for further descriptions and under species for list of breeds.

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breed class averages

the average production performance for all animals in the breed, arranged in groups according to age and sex.

commercial breed

the breed is at the level where commercial herds are breeding them for the sale market as egg-layers or wool producers rather than as foundation stock to produce the sale article.

breed comparisons

comparisons of productivity between populations each of which consists entirely of members of one breed.

breed complementation

the practice of combining breeds in a breeding program so as to maximize the genetic merit of offspring for total productivity; implies use of breeds which tend to cancel out the undesirable elements in their genetic makeup.

breed multiplier

second echelon in the breeding industry; the stud breeder producing usually sires and, to a lesser extent, dams of superior merit for commercial flocks or herds.

breed nucleus

a stud producing its own male and female herd replacements, without the introduction of outside blood; supplies the multiplier.

breed preservation

when superior breeds appear the superseded breeds are often in danger of extinction; preservation of genes which may be desirable at a later time dictates that the superseded breed be maintained in its pure state.

breed structure

see traditional breed pyramid.

traditional breed pyramid

the supply structure of three echelons, each larger than the one before, within each breed; shape like a pyramid with the breed nucleus at the top, supplying to the second echelon, the multiplier, in turn supplying sires to commercial herds.

breed true

to produce offspring that are very similar to the parent(s); refers to homozygotes.

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Patient discussion about breed.

Q. What kind of dogs are considered "low allergy" breeds? My son really wants a dog and I am allergic. Not severely but... Promised to look into getting a low allergy one. Appreciate any info including how to source free/low cost as money is tight.

A. Take in mind that there are also other criteria for choosing a dog. Some of them need special grooming and some aren't really great with kids, but you can check out these breeds and more at www. dogbreedfacts.com. As for myself, I have had several Bichon Frises, and they can be great with kids and other pets, and they are hardy and very, very intelligent!! They arent too big either! Good luck on your hunt!