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v. bred (brĕd), breeding, breeds
1. To produce (offspring); give birth to or hatch.
a. To cause to reproduce, especially by controlled mating and selection: breed cattle.
b. To develop new or improved strains in (organisms), chiefly through controlled mating and selection of offspring for desirable traits.
c. To inseminate or impregnate; mate with.
1. To produce offspring.
2. To copulate; mate.
A group of organisms having common ancestors and certain distinguishable characteristics, especially a group within a species developed by artificial selection and maintained by controlled propagation.


noun A race or variety of animals or plants related by descent from common ancestors which are phenotypically similar.
verb To produce as offspring, bear, procreate, generate, beget or hatch.


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.

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when superior breeds appear the superseded breeds are often in danger of extinction; preservation of genes which may be desirable at a later time dictates that the superseded breed be maintained in its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

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. 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!

More discussions about breed
References in periodicals archive ?
It was used 1080 one-day-old broiler chicks, provided from breeders of the same age and from six different commercial breeds.
Ear samples for the three Western commercial breeds were collected from the Research Center of Pig Breeding and Reproduction in Shandong province.
Genome-wide assessment of worldwide chicken SNP genetic diversity indicates significant absence of rare alleles in commercial breeds.
According to the ALBC, the genes of Indian zebu cattle provide heat tolerance, Caribbean hair sheep exhibit parasite resistance, and some strains of Chinese hogs are impervious to the bacterial scours that plague North American commercial breeds.
Our previous study elucidated the genetic variability of Asian native chicken populations and commercial breeds and genetic relationships among them using seven egg white protein polymorphisms (Kinoshita et al.
By the 1960s it was one of the country's three most numerous commercial breeds.
The distinctive "pear-shaped" Welsh Pig was one of the three most numerous commercial breeds in Britain in the 1960s, but the arrival of commercial breeds with reduced fat content was behind a decline that made it one of the rarest.
Could this information shed light on how North American commercial breeds respond to similar circumstances?
It demonstrated that methods used for assessing rare breed numbers are not always applicable to commercial breeds.
This study was the first attempt to analyze comparative population structure of important commercial breeds of chicken in India along with some native stock of birds.
The commercial breeds are usually New Zealand Whites, Californians or crossbreeds thereof.

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