(1) Introduction of varieties Sutai pig is selected from the Taihu Pig Breeding Center of Suzhou City, Jiangsu Province. It is a hybrid of Xiaomeishan, Zhongmeishan, Erhualian and Fengjing pigs as female parent and Duroc as male parent. In 1999, it was approved by the National Animal Husbandry Certification Committee. Sutai pig has many good characteristics such as birth weight, fast growth rate, high lean meat ratio, resistance to crude feeding, and delicious meat quality. It can be used as a female parent for producing lean lean pigs. Its whole body is black hair, big ears, down and forward, clear wrinkles on the face, mouth medium and straight, strong limbs, straight back, small abdomen, full hindquarters, with obvious features of lean pigs. The sow had a weight of 116.31 kg at the age of 9 months, a boar weight of 126.56 kg at the 10th month of the boar, and a daily weight gain of 623.12 g during the finishing weight of the finishing pig. The feed utilization rate was 3.18, reaching 90 kg body weight and 178.9 days of age. The slaughter rate of 90 kg was 72.88%, the average back fat was 2.33 cm, the eye muscle area was 29.03 square cm, and the carcass lean percentage was 55.98%. The average litter size of the sows was 14.45. The number of piglets weaned at the age of 35 days was 11.8, and that of the 60-day-old piglets was 216.25 kg. Sutai pigs were crossed with Landrace boars. Their offspring could weigh up to 90 kilograms at 164.43 days of age. The lean carcass rate of the carcass could reach more than 60%, and the average litter production was 487.08 kilograms. Can be raised in most areas of China, suitable for large-scale pig farms, specialized households, and farmers. (2) Feeding procedures shall be carried out according to the national "Lean Meat Pig Feeding Standard". (Lean meat pig breeding technology can be found in the Agricultural Net Technology column).
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