Resumen de Introduction of hiperprolific chinese pig breeds on occidentals: a review
Luis Fabian Yañez, Jacqueline Trompiz, Hiram Vecchionacce
Introduction of exotic seedstock represents a potential way to improve livestock native populations, and has played an important paper in development of modern pig breeds. Some Chinese breeds offer genetic improvement possibilities of litter size. A discussion of papers published about the use of hiperprolific Chinese pig breeds in occidental¿s breeds¿ genetic improvement is presented. Firstly, historical an evolutionary view of such pigs is show. Then classic classification based on geographical distribution in different region from China, contrasted with a modern classification, cluster analysis realized with reference to biological traits. Forward, a reference to the investigative programs is made from those countries concerned to study Chinese breeds, as pioneer China, United States, France and other countries are included. Respect to methodologies employed in the study of hyperprolific Chinese breeds, results published in crossbreeding works are compared, partitionant agents and molecular genetics. Finally, perspectives of introduction gene from Chinese pig breeds on pigs populations traditionally exploited in tropical regions are discussed. Hiperprolific Chinese pig breeds conform a value and unusual gene¿s pool from domestic animals on the world, represented by a large diversity that involved size, prolificacy, reproductive performance, environmental adaptation, represents an extremely broad base of genetic resources that may be used for adaptation to production systems, disease resistance and parasites in other world areas
