Yangzhou University has made a breakthrough in breeding lean pig breeds

Introduction: the project of "Jiangquhai lean meat pig new line cultivation" jointly undertaken by the school of animal husbandry and veterinary medicine of Yangzhou University and Jiangyan pig breeding farm has achieved phased results At present, the zero generation of Jiangquhai lean meat pig new line (temporary name) has been completed, with 107 adult sows and 26 boars In pig production, the application of two-way hybrid pig, its growth rate is slow, the proportion of carcass fat is high, more and more can't meet the market demand, but the application of "two foreign one" three-way hybrid pig, the establishment of production and breeding system is complex and difficult In 1994, Professor Jing Rongbin, a famous pig breeding expert, led the researchers to settle in Jiangyan pig breeding farm and began the long process of cultivating our own lean meat pig breeds From 1994 to 1996, several foreign lean meat breeds and Chinese local breeds, such as Jiangqu sea pig, Taihu Lake pig and Heicha pig, were used to carry out different combinations of crossbreeding experiments Jiangqu sea pig, Fengjing pig and Duroc pig were selected as breeding materials for new strains of pigs From 1997 to 1998, 24 pedigrees of Duroc, mainly American strain, were introduced and hybridized with fengjiang pig From 1999 to 2001, the basic group of new line zero generation pigs was formed through cross selection of basic parents According to the test, the zero generation Jiangquhai lean meat new line (temporary name), the number of litter of adult sows is more than 14, the daily gain of growing finishing pigs is about 700g, the feed conversion rate is 3.15:1, the carcass lean meat rate is more than 56%, and the intramuscular fat content is more than 3.5% It is fully believed that after 5-6 years of strict selection, China's own lean meat pig breed will be born in Jiangsu Province.