Hang pig ( Hang pig ) is also known as "Hangkou pig" or "Shanghang pig", because it is mainly produced in Hangkou and Shanghang in Xiushui County, Jiangxi Province.
Hangzhou pig has good reproductive performance, strong adaptability, strong disease resistance, resistance to coarse feeding, tender meat, delicious taste, is an excellent mother of hybrid utilization. In 1986, it was included in the "Chinese Pig Breed History", and in 2010, it was approved by the Ministry of Agriculture of the People's Republic of China and won the Registration Certificate of Geographical Indications of Agricultural Products of the People's Republic of China (Protection of Origin).
Physical appearance characteristics
Physical characteristics
The Hang pig is strong. The head is black, moderate in size, and the head type is divided into two types: dog head and lion head (mainly dog head, accounting for 85%), and the head shape is wider. The forehead is wide with inverted figure-eight wrinkles, the mouth is medium long, and the ears are medium large and droopy. The lion's head forehead is slightly sunken, wrinkled, deep, and the mouth is short, which is slower than the dog's head type. The body is covered with hair "dark clouds covered with snow", and the skin is white. 13 pairs of ribs, sagging abdomen. The limbs are white and the joints are strong. The end of the boar's tail has a long hair, like a thorn.
Weight and body size
On December 10, 2006, the Institute of Animal Husbandry and Veterinary Medicine of Jiangxi Academy of Agricultural Sciences measured the weight and size of Hangzhou pigs, and their weight and body size were significantly reduced compared with the data of Xiushui Hangzhou pig breeding farm in 1982 (Table 1).
Production performance
Reproductive properties
In January 2007, xiushui Hangzhou pig original breeding farm counted the reproductive performance of 30 hangzhou pig sows with more than three litters, the gestation period (114.53±0.19) days, the number of litters (12.2±0.14) heads, the number of live litters (11.37 ±0.15) heads, the newborn nest weight (9.29±0.10) kg, the initial weight (0.82±0.01) kg, the average 30-day age weaning, the number of weaning survival (10.60±0.11), and the weaned weight (3.14 ± 0.02) kg, breast milk lactation (21.63±0.21) kg.
According to the 2004 measurement of the original breeding farm of Hangzhou pigs, the fine breeding farm of Hangzhou pigs in Xiushui County was measured from 1980 to 1981, and the fattening performance of Hangzhou pigs was shown in Table 2.
Variety evaluation
Hangzhou pig has a history of more than 2,000 years, also known as "Hangkou pig" or "Hangzhou pig", Hangzhou pig reproductive performance is good, strong adaptability, strong disease resistance, resistant to rough feeding, Hangzhou pork is delicious, good taste, rich in amino acids, zinc, selenium and other trace elements beneficial to the body, whether steaming, boiling, frying, frying are the best ingredients for conditioning, but also the excellent mother of hybrid utilization.
In the future, we should do a good job in breeding protection, expand the number of groups, and use Hangzhou pigs as a mother to produce binary and ternary hybrid commercial pigs.
Development status
In 1969, the Hangzhou Pig Breeding Farm, that is, the Xiushui Hangzhou Pig Breeding Farm, was established in Xiushui, Jiangxi, and a protection and utilization plan was formulated. In 2006, there were 6 boars and 80 sows.
In 1980, Zhang Hua of Jiangxi Animal Husbandry and Veterinary Research Institute and Xiushui Hangzhou Pig Breeding Farm used Hangzhou pig sows and Middle Yorkshire pigs and Subai pigs to conduct a binary hybridization experiment, and set up a parent control group, and the hybrid advantage rate of Yorkshire pigs and Hangzhou pigs was 15.9%. Now its hybrid sows account for about 70% of local sows, all of which are free range.
In recent years, the production area has invested in the construction of the Xiushui Hangzhou Pig Project, which is a characteristic pork project with Chinese regional symbols jointly developed by Bolai Agricultural Group and the Xiushui County Government of Jiujiang City, which has established the commercial idea of "large-scale breeding and integrated operation", and through the market model of "company + farmer" and "order agriculture" of the Xiushui Hangzhou Pig Project, it has driven the breeding and development of Hangzhou pigs in Xiushui County and surrounding areas.
In order to cooperate with the Xiushui County Government to build the Xiushui Hangzhou Pig Project, the "Jiujiang Xiushui Hangzhou Pig Development Co., Ltd." was specially established, which belongs to The Bolai Agricultural Group. Jiangxi Bolai Agricultural High-tech Co., Ltd., a subsidiary of Bolai Group, is a "national key leading enterprise of agricultural industrialization", and the slaughtering, segmentation and transportation of pigs meet EU standards. The company has established a provincial enterprise technology center in Jiangxi and passed ISO9001, OHSAS18001, HACCP management system certification. There is an automated production line for the annual slaughter of 800,000 pigs, and the target project of slaughtering 30 million pigs per year is being implemented.
The information comes from "China Livestock and Poultry Genetic Resources Chronicle - Pig History" and "Characteristic Hangzhou Pig".
Seed Preservation Assessment Tool . SMIC One
Using the "SMIC-1" chip for detection, Hangzhou pig breeding and breeding farms can know the effective content of the group, comb the genealogy of the group, and clarify the inbreeding coefficient of the group. When there is excessive inbreeding in the population and the overall seed preservation effect is not good, the artificial breeding intervention through the genomic kinship coefficient can be carried out in time to reduce the increase in inbreeding and maintain the genetic diversity of the Hangzhou pig population.
Based on the research results of academician Huang Lusheng of Jiangxi Agricultural University, "SMIC No.1" integrates the latest achievements of 12 domestic universities and research institutes in the field of pig genome research, such as Nanjing Agricultural University, China Agricultural University, Beijing Animal Husbandry and Veterinary Research Institute, Huazhong Agricultural University, etc., for the research and application of domestic pig genome breeding, providing technical support for building the "Chinese breeding pig" brand. Using the "SMIC-1" chip to detect the DNA of the experimental samples, and after the quality control of the obtained SNP data, genetic diversity analysis, kinship analysis, population genetic structure analysis, and inbred coefficient analysis can be performed on the seed preservation population, and the seed preservation field can be more accurately seed preservation work through the analysis results.