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Animal breeding is a branch of animal science that addresses the evaluation (using best linear unbiased prediction and other methods) of the genetic value (estimated breeding value, EBV) of livestock. Selecting for breeding animals with superior EBV in growth rate, egg, meat, milk, or wool production, or with other desirable traits has ...
Selective breeding (also called artificial selection) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits (characteristics) by choosing which typically animal or plant males and females will sexually reproduce and have offspring together.
A lek is an aggregation of male animals gathered to engage in competitive displays and courtship rituals, known as lekking, to entice visiting females which are surveying prospective partners with which to mate. [1] It can also refer to a space used by displaying males to defend their own share of territory for the breeding season.
In 1977, Stephen T. Emlen and Lewis W. Oring created a mating systems model that shows how resource distribution affects female living patterns and subsequently, mating systems. In a mating system, the limiting sex (usually females) is the one that the limited sex (usually males) tries to monopolize. [6] The combination of resource distribution ...
(Mating Systems, p 275) In polyandrous mating it has been suggested that male cooperation may outweigh the costs of sharing paternity in situations of scarcity, of foods and of high competition levels for land or females. Female size and a large breeding territory defended by more males may force male cooperation.
A mating system is a way in which a group is structured in relation to sexual behaviour. The precise meaning depends upon the context. With respect to animals, the term describes which males and females mate under which circumstances.
Terminal crossbreeding is a breeding system used in animal production. It involves two (different) breeds of animal that have been crossbred.The female offspring of that cross is then mated with a male (the terminal male) of a third breed, producing the terminal crossbred animal.
Polygynandry is a mating system in which both males and females have multiple mating partners during a breeding season. [1] In sexually reproducing diploid animals, different mating strategies are employed by males and females, because the cost of gamete production is lower for males than it is for females. [2]