Thanapongtharm (2016) stated that in Thailand, pig production intensified significantly during the last decade, with many economic, epidemiological and environmental implications. Also detailed geographical analysis of the different production systems will be used to spatially-inform planning decisions for pig farming accounting for the specific health, environment and economical implications of the different pig production systems. Pig farming is very important in Vietnam, esp. In Thai Nguyen city and Northern provinces, pork products are suitable for people's taste. At present, most pig breeds are selected and raised in accordance with local conditions, especially wild boar and hybrids are very popular with people, the demand for products is increasing day by day. Lander et al (2020) pointed Pigs have played a central role in the subsistence and culture of China for millennia. The close relationship between pigs and people began when humans gradually domesticated wild pigs over 8,000 years ago. While pigs initially foraged around settlements, population growth led people to pen their pigs, which made them household trash processors and fertilizer producers. Study results show for instance, For commercial cross-bred wild boar farming, a diet with a protein level of 16-14% and a metabolic energy level of 3000-2900 kcal/kg of feed in the diet for growth and fattening most appropriate, which has both the growth ability of hybrid wild pigs and economic efficiency under semi-wild breeding conditions in Thai Nguyen ecological environment. Last but not least authors present food processing of wild pigs into delicious stir-dried pork.

In case of Northern region of Vietnam, many provinces and cities such as Thai Nguyen that have much and enough conditions for feeding wild pigs in Thai Nguyen ecological environment. Feeding wild pigs and managing wild pork meat quality is meaningful in Vietnam, esp. In Thai Nguyen province as pork products can offer variety of tastes due to food processing and suitable for Vietnamese tastes and can export to the world widely. We might note that wild pigs prefer to live in herds, from 5-10 pigs and live in mixed forests. To meet demand from global markets including US and Europe, we need better solutions for feeding wild pigs and enhance quality of wild pork meat. From wild pork meat, people can offer delicious food via pork processing as suggested in the paper. Last but not least, we propose protein and energy mechanism for wild pigs feeding in case study of Vietnam. On conclusion, it's stated that, In Thailand and China, wild boars have also been domesticated and crossed with native pigs to become livestock in the breeding system for 12-18 years. Purebred Thai wild pork has many advantages over Vietnamese wild boar such as high resistance, less care, self-fertilization without human intervention, simple housing, low cost. livestock production is low but the output is stable. With the development of society, the demand for wild pork meat and pure local pigs are being preferred. Therefore, farmers are gradually taming farming in the direction of concentration but still keeping their wild behavior.

Feeding wild pigs and managing wild pork meat quality is meaningful in Vietnam, esp. In Thai Nguyen province as pork products can offer variety of tastes due to food processing and suitable for Vietnamese tastes and can export to the world widely. At present, most pig breeds are selected and raised in accordance with local conditions, especially wild boar and hybrids are very popular with people, the demand for products is increasing day by day. But raising pigs is also facing many obstacles, because wild boars are wild, domesticated more difficult than foreign pigs, and require a large area of land and a rich source of green food. Wild boars have good characteristics of adaptability, tolerance to harsh conditions in mountainous areas, taking advantage of natural food sources and low technical requirements. Authors use statistical data and qualitative analysis to draw conclusion. The study find out that Softness, the amount and structure of collagen Then The cut of the meat is dry, the meat is slightly hiss, the muscle is a bit tight; And Fresh color -Healthy pork is usually light pink to crimson in color. This parameter is an important food quality standard.

Authors perform this research to study on constructing value chain of wild pork and wild pigs in the northern region of Vietnam. Thuy, N.T (2021) presented the analysis results show that factors including: income, natural conditions, loan capital, market have a great impact on the level of people's participation. Since then, the article has suggested some solutions to improve people's participation in agricultural value chain development of wild pigs and wild pork. Thom, BT., & Huy, D.T.N (2021) stated Feeding wild pigs and managing wild pork meat quality is meaningful in Vietnam, esp. In Thai Nguyen province as pork products can offer variety of tastes due to food processing and suitable for Vietnamese tastes and can export to the world widely. Feeding wild board in different environment also affect quality of wild pork meat, for example in US, Brazil or In Vietnam. It is in the study we will make comparison to wild pork meat in China and Thailand and suggest to enhance vale chain linkage of wild pork and wild pigs to enhance exporting markets. Last but not least, better value chain linkage can be enhanced through reducing transaction costs from wild pig farming to factories and producing wild pork meat following European standards or GlobalGAP or VIETGAP.

No abstract