With the support of the National Science and Technology Support Program, the development of a new breed of new breeder breeding technology and the selection of breeding stocks for livestock and poultry has developed rapidly. A number of important aquatic animal and aquatic species have been selected for breeding.
The molecular marker-assisted selection technology, the cattle and sheep X/Y sperm separation breeding technology, the in vitro embryo production technology of young livestock, the efficient ovulation control technology of cattle and sheep, and the long-term preservation technology of livestock semen were integrated and innovated, and the efficiency of cattle and sheep was established. Breeding technology and rapid expansion of the two major technological systems. A high-quality, stable somatic cell bank has been preliminarily constructed to provide high-quality cell materials for transgenic animal breeding, somatic cell nuclear transfer, and stem cell research, to form a complete oocyte culture and preservation platform, and to establish fresh oocytes for cattle, sheep, and pigs. In vitro maturation culture system obtained the first domestic frozen oocyte fertilized calf in vitro, filling the domestic blank.
Through the determination of dairy cows' production performance, identification of body appearance, determination of young bull descent, etc., the number of Chinese Holstein cows registered has reached 101,000, and the total number of performance tests has reached 87,780. Fifty-six elite bulls with determined scores were selected and 1,000 seeded cows were selected. Through the collection of production performance and DNA samples, eight new functional genes and polymorphic loci that affect milk protein content were identified, including ABCG2, OPN, and PRLR, and a high protein core seed cow population was established. Ten high milk protein-based bulls. The investigation of species resources of Sanhe cattle and Xinjiang brown cattle was carried out, and a database of 11,000 Mikawa cattle was established, forming a pattern of 100 core groups and 10,000 breeding groups; and a population of 700 (heifers) was formed in Xinjiang. Brown cattle breeding core group. Using the beef cattle linear scoring method, an individual matching scheme was established based on the body appearance of Luxi beef for the basic herds, and the Qinchuan beef cattle breeding core group and the Red Angus cattle breeding core group were established.
Utilizing the breeding and meat quality and production performance of the eight excellent local breed resource selection and breeding lines (strains) of Northeast China Minzhu, Laiwu, Huai, Qingping, Tibetan, Beijing Black, Rongchang and Saba. As for the eight landraces as a maternal, the feed conversion ratio etc. were measured. Through the continuous breeding and improvement of the pure brown line layer and white shell layer chickens, two new high-yield layer chicken breeds (supporting lines) with different characteristics were formed. The newly-cultivated new breed of white feathers and gooses has the advantages of excellent reproductive performance, early growth speed, and plumage whitening when adult or on the market. It is suitable for industrialized meat goose production enterprises and various meat and goose producers as well as down production. Or balance down production.
In the selection of new aquatic product lines, 49 Nile tilapia families, 81 F2 breeding families and 19 control families, 63 gingival half-sib families and full-sib families, and 28 filial generations were established. Half-sib families, 64 maternal full-sib families. A total of 48 full-sib families of Penaeus chinensis were established, including 7 half-sib families and 4 F2 families. Thirteen anti-high ammonia nitrogen families and 16 anti-high-pH families were selected. A total of 44 siblings and half sibling families were established. Thirty-five penaeid shrimp families were established, and 75 Wanna vannamei anti-WSSV families were developed. Eight pedigrees and one breeding group were obtained.
In the breeding and breeding of forage grasses and special animal breeds, the breeding of high-quality, high-yield repellents and feedstuff new varieties was carried out, and a new pasture variety, Korbania camphorata, was cultivated. In 2006, new forage grasses were approved. Three breeding materials for silkworm anti-NPV virus, natural green earthworms, and low rate-reducing varieties were created. The long silk, high-grade, raw silk, three silkworm varieties, “Suko×four seasonsâ€, were selected and silkworms suitable for feeding in summer and autumn were identified. 4 crossbreeding combinations were selected; 2 mulberry varieties with high quality, high yield and suitable for harvesting were selected and planted in Jiangsu, Zhejiang, Inner Mongolia and other provinces (districts). The screening and blocking breeding of the high-calcic acid bee population has completed 60 groups in the core group, and the dilute acid content exceeds 1.8%.