Tibetan pig
First, the appearance characteristics Tibetan pigs have mostly black coats, some pigs have incomplete "six whites" characteristics, a few pigs are brown, and piglet coats have brownish longitudinal stripes. The bristle hair is long and dense, and the coat is dense and downy. The body is small, the mouth is long, straight, tapered, and the frontal area is narrow, with less frontal wrinkles. Ears are upright and flexible. The chest is relatively narrow, the body is short, the back is straight or slightly arched, the hindquarter is slightly higher than the forequarters, the hip is tilted, the limbs are firm and compact, upright, the hoofs are firm, and the nipples are mostly 5 pairs. According to the survey, the body length of one Tibetan boar sow is 85.1 cm in length and 73.25 cm in chest. The body height is 49.92 cm and the weight is 33.04 kg. The boar is 85.1 cm long, 34 cm bust, 42 cm tall and weighs 25.91 kg. Second, living habits Tibetan pigs can adapt to harsh cold climate, year-round grazing and poor feeding and management conditions. In the Qinghai-Tibet plateau mountain area with an elevation of 2500-3500m, the annual average temperature is 7°C～12°C, the minimum wintertime is -15°C, and the frost-free period is 110-190 days. With the lack of feed resources and the harsh conditions of grazing for about 10 days a day, Tibetan pigs can still survive well. This extremely strong adaptability and stress resistance is a unique germplasm characteristic that other pig breeds do not possess. Third, production performance Tibetan pigs under the conditions of grazing all year round, fattening pigs gain weight slowly, 12-month-old body weight 20-25kg, 24 months of age 35-40kg. It was determined that, under house-feeding conditions, a mixture of 13.81 MJ of digestible energy and 166 g of digestible crude protein per kg was eaten freely, and the body weight at the age of 307 was 53 kg, and the daily weight gain was 173 g. The consumption per kilogram of the mixture was increased. 5.24kg. The average weight was 48.62kg, the slaughter rate was 66.6%, the lean percentage in the carcass was 52.55%, and the fat rate was 28.38%. Sows generally produce one litter each year, and the average sow of the first-born sow is 4.78 first-croft, 6.03 second-born and 6.43.
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