(I) Breeding of breeds Sutai pig is a new lean Chinese pig breed based on Taihu pigs with the most number of litters in the world. It maintains the high reproductive performance of Taihu pigs, has a delicious meat quality, and has strong adaptability. Crossbreeding pigs have the characteristics of high growth rate, high lean meat percentage, and significant heterosis, which is an ideal maternal for the production of lean-type commercial pigs. Sutai pig is a new lean pig breed developed from the Sutai pig Breeding Center of Suzhou City (now the Sutai Group) based on Taihu pigs. It passed the scientific and technological achievements appraisal in 1995 and passed the national livestock and poultry species approval committee in 1999. The new breed certification. Sutai pig has won the second prize of national scientific and technological progress as a scientific and technological achievement, the former major scientific and technological achievement award jointly issued by the former State Development Planning Commission, Science and Technology Commission, and the Ministry of Finance, the first prize of scientific and technological progress of the Ministry of Agriculture, and the first prize of agricultural technology promotion in Jiangsu Province. Suzhou Science and Technology Progress Award and other awards. (b) Physical appearance Su Tai pig is black hair, medium and large ears, hanging down, face with shallow lines, mouth medium and straight, strong limbs, straight back, small abdomen, full hindquarters, well-balanced structure, with obvious lean Pig characteristics. 7 pairs of effective nipples. A small number of pigs have jade nose (nasal white). (III) Production performance 1, growth and development During the period of weaning ~ 50 kg, the daily gain is 5,7025.6 grams, and the daily weight gain is 7,102,8.8 grams during the 50-90kg phase. 2, reproductive performance The average sows produced 14.51.06 sows, 13.780.98 live pigs were born, and the weaning weight was 7.850.56 kilograms at 35 days. 3, fattening performance The age of 90 kg was 1783.45 days, and the feed conversion rate was 3.11 during the fattening period. 4, carcass quality Carcass lean meat rate was 56.10% 1.32, intramuscular fat up to 3%, bright red flesh, delicious meat, tender and juicy, moderate fat, suitable for Chinese cooking habits and tastes. (IV) Hybridization and Utilization Sutai pig is a female parent. It is a good model to produce “Sutai†hybrid pigs by crossbreeding with Great White boars or Landrace boars. Sotai hybrid pig carcass lean meat rate of 59 to 60%, 90 kg body weight at the age of 160 to 165 days, 25-90 kg stage daily gain of 700 to 750 grams, feed conversion rate of 1:2.98. (v) Feeding management features 1, Sutai pig breeding When boars are 7 to 8 months old and they have a weight of 80 to 90 kg or more, they can start breeding. Sows are suitable for 6 to 7 months of age and 70 kg or more in weight. The average estrus cycle of the sow was 20.3 days and the estrus duration was 3.95 days. The characteristics of the sows are stunned, vulva red or swollen, moist, and with thin mucus outflow. Some sows also exhibit reduced appetite, crawling across other pigs or jumping behavior or squealing estrus symptoms, when the back press occurs. Immobility, when the vulva swelling subsides, is the best time for breeding, mating methods are natural mating and artificial insemination. 2. Su Tai pig breeding Sutai pig does not require high feed and has good crude resistance. It can make full use of agricultural and sideline products such as bran, bad residue and vine. Sows diets can be as high as about 20% in crude fiber feed and are a pig breed that is tolerant to roughage. (vi) For farmers The Suzhou Sutai Pig Breeding Center (predecessor of the Sutai Group) was established in 1984. It is a breeding base for the breeding of Sutai pig jointly invested by the Ministry of Agriculture, Jiangsu Province, and the Suzhou Municipal Government. The leading product: Sutai Pig, Su too cross sows, Taihu pigs.
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