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A breeder may also assist with breeding animals in the zoo. In other cases, a breeder can be referred to an animal scientist who has the capabilities of developing more efficient ways to produce the meat and other animal products humans eat. [1] Earnings as a breeder vary widely because of the various types of work involved in the job title.
Responsible breeders take into consideration the temperament, as well as the health and appearance of the mating pair before breeding. Breeders of purebred dogs can register the birth of a litter of puppies to a dog registry associated with a kennel club to record the parentage of the litter in stud books.
In addition, the breed club, kennel club, or other governing authority may have other restrictions on the type of animal that can be used for breeding to produce offspring that can be registered. For example, some horse registries allow backbred and crossbred individuals to be breeders. However, most dog registries do not accept crossbred ...
[1] The "subjective selection of breeding stock" in horses has led to many horse breeds with particular performance traits. [2] While breeding animals is common in an agricultural setting , it is also a common practice for the purpose of selling animals meant as pets , such as cats , dogs , horses , and birds , as well as less common animals ...
Selective breeding has been responsible for large increases in productivity. For example, in 2007, a typical broiler chicken at eight weeks old was 4.8 times as heavy as a bird of similar age in 1957, [ 36 ] while in the thirty years to 2007, the average milk yield of a dairy cow in the United States nearly doubled.
Humans, unlike most other species, have concealed ovulation, a lack of obvious external signs to signal estral receptivity at ovulation (i.e., the ability to become pregnant). Some species of animals with estrous cycles have unmistakable outward displays of receptivity, ranging from engorged and colorful genitals to behavioral changes like ...
For example, to breed chickens, a breeder typically intends to receive eggs, meat, and new, young birds for further reproduction. Thus, the breeder has to study different breeds and types of chickens and analyze what can be expected from a certain set of characteristics before he or she starts breeding them.
The Victorian Stud Book was then published in Volumes 1-2 which were edited by William Levey to the year 1864 and volumes 3-4 edited by William Cross Yuille to the year 1874. [3] The Australian Stud Book (ASB) began in 1878 as a private venture by A. & William C. Yuille, Melbourne bloodstock agents who published nine volumes.