The introduction of China's pig breeds

There are many kinds of fragrant pigs in China, and their morphology, color, and so on varies from region to region. However, the common feature is its small size and strong resistance. Therefore, it is also called a miniature piglet. 1 . Southeast Guizhou Xiangshan pigs are mainly distributed in the mountainous region of Jiuwan Mountain in the southeast of Guizhou Province. The characteristics of growth are short stature, straight lines from the forehead to the nose, few wrinkles, shallow, and insignificant. The ears are small and thin, with both ears extending forward and upward, and the tips slightly hanging. The back is wide and dimpled, and the abdomen is round and some are touchable. Short limbs, sensitive activities. Mao mostly black, thin skin tender, suitable for roast suckling pigs, waxy pigs and so on. The average boar weight was 38 kg, body length 81 cm, chest circumference 78 cm, height 47 cm. At the age of 80 days, semen appears for the first time. Usually, at the age of 170 days, the amount of ejaculate reaches 25 ml. Each milliliter of semen contains about 2.5 billion to 3.8 billion sperms and can be used as the initial mating. The adult sow had an average body weight of 40 kg, a body length of 80 cm, a bust of 78 cm and a body height of 45 cm. The initial estrus of the sows is generally around 120 days of age, and the estrus cycle is about 20 days, with a duration of about 5 days. There are 5-6 pairs of nipples, and there are fewer litters in the first birth, usually about 5, and it can gradually increase afterwards. There are more than 8 births. 2 . The Yibei Xiang pig Yibei pigs are mainly distributed in most of the areas in the northern part of the Hechi of Guangxi Zhuang Autonomous Region with Huanjiang, Dongxing, Tamura, and Mulun as the center. Before the founding of New China, it was under the jurisdiction of Yibei County, hence the name “Yibeixiang”. pig". As early as in 1939, the product map of Yibei County was recorded. Therefore, Yibei Xiang pig has a long history. There are two types of Yibei fragrant pigs: One adult has a relatively large body weight of about 70-8 kg. The head fits in the middle ear with a large sagging, the mouth is slightly curved, and the neck is thin. Length, chest deep and narrow, back waist concave, abdomen is not mopping, limbs short, short round plump, short legs; another adult weight, about 50-70 kilograms, mouth short, small ears, The neck is short and thick, and the body is round and full. The bones are fine, the back is concave, and the abdomen is mopping. The two types of community features are: the frontal plane, near the nasal disk, with 4-6 deep horizontal stripes. The ear thickness stretches to the front, the coat is black and fine, and the hair is thick. There are individual pigs with four legs and tails with white hair. The forelimbs are in correct posture and the hind limbs are lying. Adult male pigs generally start to breed around the age of 5 months, and the hard-ageing period of male pigs is 2-3 years. Adult female pigs generally have an initial puberty of about 120 days, an estrus cycle of about 20 days, and a estrus duration of about 5 days. The pregnancy period of mother pigs is 113 days, and the number of births is about 6 for the first time, and each child can reach 9 or more in the future. 3 . Radish pigs, radishes, pigs, pigs, pigs, pigs, pigs, pigs, pigs, pigs, pigs, pigs, pigs, pigs, pigs, pigs, pigs, pigs, pigs Adult male pigs usually have a body weight of 25 kg. Piglets grow rapidly during the first 4 months of age and reach 20 kg at 4 months of age. Growth slows after sexual maturity. The weight of adult female pigs is generally around 30 kilograms, up to 35 kilograms. The number of first-born mothers of female pigs is generally 4-5, and the number of second-born babies is 8-10. The average weight of the piglets was 450 g at the time of birth. The average body weight at 1 month was 1 kg, body length was 30 cm, and chest circumference was 32 cm. The radish pig is characterized by its small size, genetic stability, and system purification. It is recognized by the relevant experts as a precious variety and has high scientific research, economic, and social value. 4 . Tibetan fragrant pigs Tibetan fragrant pigs are mainly distributed in plateau areas in Tibet, Qinghai, and other places, and are also called barn pigs, ferns and pigs. Small size, long, straight, tapered cone; frontal narrow, frontal row between the nasal tray less wrinkles, not obvious. Both ears extend to the sides, the body is relatively short, the chest is also narrow, the back is straight or slightly convex, the abdomen is flat, the hindquarters are taller than the front, and the hips are tilted. The limbs are strong and the hoof is solid. The coat is mostly black. The average boar weight was 14 kg, body length 50 cm, chest circumference 49 cm, and body height 31 cm. The adult sow had an average body weight of 13 kg, a body length of 57 cm, a chest circumference of 51 cm and a body height of 35 cm. There are about 5 litters born in the first born sows and more than 8 in the middle. Piglets weigh about 500 grams at birth and weigh 2-5 kilograms at 2-3 months of age. Tibetan fragrant pigs are rare breeds of plateau mini-pigs in the world. They can adapt to harsh cold climates, can grazing all year round, supplement a small amount of concentrates during the winter season, and have extensive management. Feeding on the fruit of rowan, rhizomes, etc. in the fields of ramie, sour sorghum, wild wolfberry, wild carrot, bulbous sorghum, wild wolfberry, grass seeds and woods. Tibetan fragrant pigskins are thin, with high meat yields and a lean meat percentage of 52% or more. Therefore, it is more suitable for breeding in areas with poor weather. 5. Qilixiang Qialixiang pig, also known as Bamaxiang pig, banana pig, etc., is originated in Bama, Bangxi, and Tiandong areas in western Guangxi. It is represented by the pig produced in the Qili district belonging to Enron County in the early years, hence the name “Qili Xiang Pig”. Adult pigs usually weigh about 40 kg, about 50 cm in height, and about 100 cm in length and chest circumference. The head is small and light, the mouth is slender, flat from the forehead to the nasal septum without obvious wrinkles, small and thin, slightly concave on the back, chest wide, abdomen sagging, nipples 5-7 pairs. The coat is black and white, with some dark spots on its back and an inverted triangular white spot on its forehead. Seven-year-old sweet-smelling pigs matured earlier. The initial estrus of female fragrant pigs was generally about 120 days. The estrus cycle was 18 days, the gestation period was 111 days, and the estrus was 62 days post-partum. The weight of the newborn piglet was 450 grams, about 2 kg at 2O days, and about 5 kg at 60 days of age. Qi Lixiang Pork Pork has fine bones, thin skin, white fat, fresh muscles, fine muscle fibers, high meat yield, and thick and fragrant meat. It is an ideal artificial breed.

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