Plant extract is a product formed from plants as raw materials, through physical and chemical extraction and separation process according to the needs of the use of the final product extracted, to obtain and concentrate one or more active components in plants in a directional way, without changing the structure of the active components.
Proportional extract is the extract, liquid extract or powder made by the extraction and concentration of raw materials such as plants and animals. The number of raw materials before extraction and the mathematical ratio of the product after extraction and concentration generally do not have very clear composition and content.
1. According to the content of active ingredients, it can be divided into three types: effective monomer extract, standard extract and ratio extract;
2. Divided into glycosides, acids, polyphenols, polysaccharides, terpenoids, flavonoids, alkaloids, etc.
3. According to the product form, it can be divided into vegetable oil, extract, powder, lens, etc.
4. According to their use, plant extracts can be divided into natural pigment products, traditional Chinese medicine extracts, extract products and concentrated products.
Plant extract ,Proportional extract,TLC,Thin layer chromatography,Chinese herbal extract PYSON Co. ,Ltd. , https://www.pysonbio.com
Technical measures to increase fertility of breeding pigs
The number of litters in sows is not only related to breed, age and parity, but also raising the breeding and management level of breeding pigs and excavating breeding potential of breeding pigs is also one of the important factors. First, do a good job of feeding and management of boars 1. Breeding boars. The species value of boars is the key to determining the breeding situation. In order to ensure adequate supply of nutrients in production, male boars can provide high quality and sufficient amounts of semen to lay the foundation for mating. First of all, it is necessary to meet its nutritional needs. The dietary requirements for adult boars include digestion energy of 4,100 kcal/kg, protein of 16% to 18%, calcium to phosphorus ratio of 1 to 2:1, and appropriate addition of some essential Amino Acids to ensure copper, Iron, zinc and other trace elements and the effective content of Vitamins. Second, feed should be diversified to achieve nutritional complementarity. Feeding should be regularly quantified to ensure that breeding boar breeding conditions to prevent excessive fat or too thin. Third, appropriate amounts of physiological acid feed, such as cereals, bran, oil cakes, etc., are added to improve semen quality and increase breeding success. 2. Management of boars. The first is to strengthen the exercise, exercise once every morning and afternoon, each exercise for 1 hour, and the journey is about 2 kilometers. Second, exercise should pay attention to avoid the cold and the hot sun. The third is to make reasonable use of breeding pigs. Adult boars are usually bred one or two times a day, and each week rests for one day. After the breeding is completed, the boars are returned to their original houses for rest, and they cannot immediately drink or feed. 3. Pay attention to the balance between nutrition, exercise, and mating. The nutrition, movement and mating of boars are interrelated and mutually restrictive. Nutrients are abundant, and if there is not enough exercise and breeding, the boar will be over-fed, the ability of breeding will be reduced, and the quality of semen will be reduced. On the contrary, excessive exercise and breeding, and lack of nutrition, the boar weight loss, the quality of sperm decreased, the number of effective sperm decreased, lack of vitality. Therefore, we must maintain the balance of the three to ensure the provision of high-quality, sufficient amount of semen. Second, strengthen sow breeding and feeding management 1. Selection of gilts. The gilt body shape and breasts should be well developed and the number of teats should be 14 or more. In addition, the genetic basis of their parental fertility should be considered, taking into account their paternal and maternal indexes. Strictly control the age of birth and body weight, implement repeated breeding, and strengthen feeding management to maximize the heritability of the sow. The gilts are generally reared in small groups and fed feeds with full protein and amino acid balance. In order to allow the growth and development of the reserve pigs, qualified farms (households) can feed more high-quality green feed. Boars bred for not less than 20 minutes a day for bred pigs can obtain higher estrus rates and conception rates. 2 empty sow breeding management. The feeling of ovulation is directly affected by the sow's lyrical condition. The first is to ensure the supply of empty nutrients, especially the supply of protein. If the supply is insufficient or the quality is not perfect, the normal development of egg cells will be limited, the number of ovulation will decrease, and the conception rate will decline. The second is to meet the needs of Minerals and vitamins, especially the supply of calcium, vitamin A, and vitamin D, and to maintain the sow's moderate lyrical and vigorous energy. For pregnant sows with poor body condition, short-term high-quality feeding can be performed prior to mating, that is, high-energy feed is supplied 10 to 14 days before the breeding to increase the number of ovulation and improve the quality of eggs. At the same time, a large amount of green and succulent feed is supplied in sow diets to maintain good external environmental conditions and the cleanliness and hygiene of pigs, and to pay attention to sunstroke prevention and cooling work. 3. To strengthen the feeding and management of pregnant sows. Within one month after mating, it is the peak period of embryonic death. Therefore, the feed should be full-priced and safe, and must not be fed moldy and deteriorating feeds. At the same time, the feed energy should be properly reduced; the machinery caused by stress, scare, mutual fighting, violent drive, etc. should be reduced. Sexual abortion. Before giving birth, the sows should not be fed too much. Ensure that there is sufficient clean drinking water. If necessary, take a laxative or diuretic to prevent constipation and mastitis. The main task of feeding and management during pregnancy is to ensure the normal development of the fetus in the mother's body, prevent miscarriage, and ensure the upper body condition of the sow. In the first 3 weeks, feeds such as corn and soybean cake are properly fed, and the protein content is 13%~15%; the sow's digestive ability is enhanced in 4~12 weeks, the medium nutrient level should be maintained, and the protein content is 11%~13%. Juicy green feed; After 12 weeks, the fetus develops rapidly and needs a lot of nutrition. At this time, diversified feed should be provided, and the protein content should account for 15% to 18% of the diet; 2 weeks before delivery, the appetite is poor, and the digestive capacity is weak. Feed digestible feeds and make small meals. The sows in the later period of pregnancy are kept separately and the delivery room equipment should be suitable, hygienic, clean and well ventilated. Before the production of piglets, heat preservation equipment is equipped to enhance the care of the piglets and prevent the sows from squeezing the piglets. Allow sows to exercise freely before labor, avoid sharp turns during exercise, avoid movement on slippery or muddy roads, stop outside of the house in case of rain, snow or cold weather to avoid freezing or slipping. Do not startle, whip, bite frame and other undesirable stimuli. Third, timely breeding 1. Select the appropriate timing of breeding. Sows generally ovulate 24 to 36 hours after estrus. The fertilization time of eggs is only 8 to 12 hours. The sperm can survive in the sow for 10 to 20 hours. In order to ensure the combination of sperm and egg when the vitality is the strongest The eggs are all fertilized and form embryos. The appropriate breeding time is 2 to 3 hours before ovulation or 19 to 30 hours after estrus. In actual production, the appropriate timing should be flexibly selected according to the age and breed of the sow, “the old with the early, small with the late, not the old with the middleâ€, “cultivated varieties should be early, local varieties should be late, hybrid varieties In the middle, premature and late breeding will affect the fertility rate. 2. Choose a reasonable breeding method. The way of mating is also an important part of determining the number of litters. A large number of practices have proved that: reassuring (sows use 1 boar in 12- to 18-hour intervals during a love period) and double allocation (sows use 2 boars for 15-30 minutes at a time With 1 time) and 3 times the breeding effect is better. Farms (households) can choose the appropriate method according to the conditions and needs in the actual production to achieve the purpose of increasing the number of litters. 3. Take care to prevent breeding failure and mating bleeding. Breeding failures are manifested by boars not climbing estrus sows and estrus sows unwilling to allow boars to cross. The main reason is due to young male pigs without mating experience, old age of body fat, heat stress and penile trauma, gilts No mating experience, uterus and urinary tract inflammation after sow weaning. The control measure is to allow young boars to watch the mating process of adult and experienced boars. The male and female pigs with damage to the reproductive system, inflammation, and sows are cleaned with disinfectant drugs, treated with antibiotics and treated with symptoms, and then bred. Breeding bleeding is mainly due to boar penis damage and sow birth canal injury, generally with antibiotic treatment can quickly restore the breeding function.