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Eight eyebrow pig
Eight eyebrow pig (public) Eight eyebrow pig (mother) Eight eyebrow pig is also called Chuanxi pig or West pig. The central production areas are the Shaanxi Trail River Basin, Gansu Gansu East and Ningxia Guyuan. It is mainly distributed in Shaanxi, Gansu, Ningxia, Qinghai and other provinces and autonomous regions, and is also distributed in neighboring Xinjiang and Inner Mongolia. Bamei pig has the characteristics of strong adaptability, strong stress resistance, good meat quality, strong fat deposition ability, extensive resistance management, and hereditary stability. However, the eight pigs also have the disadvantages of slow growth, poor hindquarters development, and thick skin. First, the appearance of the head is relatively narrow and long, large drooping ears, the amount of vertical "eight" wrinkles, hence the name eight eyebrows. Coat black. According to the body appearance and production characteristics can be divided into big eight eyebrows, twenty eight eyebrows and pig three types. 1, big eight: a larger body. The head is heavy, the surface is slightly concave, and the amount is wider. The wrinkles are thick and deep, criss-crossing, and they have the word "ten thousand" or "shou". The ears are drooping, longer than the nose, and straight. Longer back, drooping belly. The limbs are slightly taller, the hind legs are more lying and the tail is longer. The skin is loose and loose, with multiple wrinkles on the body and hind limbs. The coat is long and thick. Nipples 6 to 7 pairs, up to 9 pairs. The economy matures later. The masses described the big eight eyebrow pigs as: "The head of the birthday, the eight-character eyebrows, the large face of the ears cover the mouth, and the skins of the skin cover the trouser legs." In the early years after the founding of the People's Republic of China, a large number of big eight eyebrow pigs were present, but now they are few, accounting for only about 1% of the total number of eight eyebrow pigs. 2. Ermei: The intermediate type between Big Eight and the little pig. The head is narrower and longer, and the amount of the "eight" wrinkles is clearly thin and shallow, and the ears are drooping, long and open. The back is long and narrow, with large sagging belly and oblique squat. The thighs are full, the hind legs are more lying, and the wrinkles are less, and not obvious. 6 pairs of nipples, up to 7 to 8 pairs. High production performance, is a medium-mature type. It accounts for about 19% of the total number of eight eyebrow pigs. 3, small pigs: smaller body, side oval. The body is compact and flexible. The head is light, small, straight, with more spiny hair on the forehead, less wrinkles and shallower skin, less sagging ears, harder ear shells, commonly known as apricot ear, mouth tip, commonly known as cucumber mouth. The back is shorter and wider, the abdomen is slightly sagging and the rear drive is full. Shorter limbs. Thin skin. There are 6 pairs of nipples. Precocious and easy-to-fertilize, suitable for farming in rural areas. It accounts for about 80% of the total number of eight eyebrow pigs. Second, fattening performance Bajiao pig growth is slower, a longer finishing period. Big eight eyebrow pigs only weigh around 50 kg at 12 months of age, slaughter at 2 to 3 years with a body weight of 150 to 200 kg, and are 8 centimeters thick and 20 to 25 kilograms of flower oil. The fattening period of the 28 brows is shorter, 10 to 14 Moon age, body weight 75 to 85 kg can be released; the pig can be slaughtered when the pig is 10 months old and weighs 50 to 60 kg. The daily gain during the finishing period was 458 grams and the lean meat rate was 43.2%. Eight eyebrow pig meat is good, bright red flesh, muscle was marbled, tender, fragrant, carcass lean meat protein containing 22.56%, eye muscle pH 6.71. Third, reproduction performance boar sexual maturity, about 30 days of age that is sexual behavior. Boars began to be bred when they were 40 kg old at 10 months of age. The general life span is 6-8 years and there are as many as 10 years or more. The sows started estrus at 3- to 4-month-old (average 116 days). The estrus cycle is generally 18-19 days, the estrus duration is about 3 days, and the estrus after birth is generally about 9 days after weaning (5-22 days). ). The sows were started to breed at the age of 45 kg. There are 6.4 heads of litters and 12 heads of more than three babies. The general useful life is about 4 years. Adult boars ejaculate 250-400 ml.