China's local pig breeds are sexually mature and have many ovulations. According to the statistics of 9 varieties of northeast minced pigs, Jinhua pigs, Jiaxing black pigs and Neijiang pigs, the average sexual maturation time was 130 days, and the average number of ovulation pigs was 17.21 pigs and 21.58 pigs. Sexual maturity of foreign pig breeds is generally more than 180 days, and the number of ovulation is also less. The number of litters produced in local pig breeds is large. The average number of pigs produced in the above varieties was 10.54, and the average yield was 13.64. The breeds of Changbai pigs and Large White pigs with high fertility in foreign countries had an average yield of 9.25 heads and averaged 11 heads. In comparison, local pig breeds also have good breeding characteristics such as a large number of teats, obvious estrus, high conception rate, strong nursery abilities, and a high rate of piglet rearing.
Meat quality:
Although the local pig breeds have more fat and less lean meat, the meat quality is obviously better than that of foreign pig breeds. In some foreign lean-breeding breeds, the incidence of PSE meat (ie, pale flesh, soft texture, and oozing out of the cut surface) is high. Chinese local pig breeds are of excellent quality, tender and juicy muscles, and the muscle fibers are fine and dense. Larger, moderate distribution of muscle marble, muscle fibers filled with fat particles, can produce a special flavor when cooking.
Adaptability:
In the long-term natural selection and artificial selection process, local pig breeds have good cold-resistance, heat-resistance, disease-resistance, low-nutrition-tolerance and ability to adapt to crude fiber feed.
Growth rate:
In terms of growth rate, foreign pig breeds are significantly higher than those of local pig breeds in China. During the growing-finishing period, the average daily gain of Chinese local pigs such as local pigs, Jinhua pigs, and Taihu pigs was 453 grams. The average daily weight gain of foreign pigs Landrace, Duroc, and Yorkshire pigs was 667 grams. Foreign pig breeds can reach more than 90 kilograms at 180 days, while Chinese local breeds reach 90 kilograms far beyond 180 days.
Feed utilization rate:
The average feed-to-meat ratio of local pigs, pigs, Jinhua pigs and Taihu pigs in China was 3.5:1, and the average feed-to-meat ratio of foreign pigs Landrace, Duroc, and Yorkshire pigs was 3:1. The high feed utilization rate of foreign pig breeds can save feed and reduce feed costs.
Lean rate:
The porcine lean rate of foreign pig breeds is higher than that of Chinese local breeds. The lean meat rate of foreign breeds is more than 55% when it weighs 90 kilograms, and the carcass lean rate is less than 45% when it is 90 kilograms.
Low content monomer plant extract, main content 1%-50%. Including but not limited to Pu-erh tea extract 40%, rhodiola rosea extract 1%, 3%, pueraria root extract 30%, 40%, celery extract 5%, salvia miltiorrhiza extract 5%, 10%, burdock seed extract, salicin 5%, aloe vera extract, gynost' pentaphyllum extract 20%, green tea extract, ginseng extract, chlorogenic acid extract.
Plant extraction process
1. Select plants/herbs. No more than ancient prescriptions, prescriptions, folk herbs to find. At present, common and uncommon herbs have been studied. At present, it is mostly to increase the amount of medicinal materials to extract and separate components with low content, or to find medicinal plants that have never been studied from miao medicine, Tibetan medicine, Mongolian medicine, Africa, Latin America and other places.
2. The extraction. Solvent petroleum ether, n-hexane, cyclohexane, benzene, chloroform, ethyl acetate, n-butanol, acetone, ethanol, methanol, water (low polarity → high polarity). Daily medicine decoction effective, water and ethanol and other solvents with large polarity, such as artemisinin boiling ineffective extraction with petroleum ether and other solvents with small polarity. Common medicinal materials water/alcohol/ether to go through, separation and identification of more compounds.
3. The separation. This is the most important work. In the solution extracted from the second step, there are dozens of compounds, usually by column chromatography, which is often referred to as the column flushing. It's a lot of work, it's boring, it's low tech. A master's student might do this every day for two years. The column for separating compounds, as shown below, is as large as 2 meters high and as small as 10 centimeters. Change the solvent condition of mobile phase, change the material of column, different conditions and different separation principles of column repeatedly punching, can be separated from the monomer compound.
Low Content Monomer,Rhodiola Rosea Extract,Kudzu Root Extract,Herbal Extract Apigenin
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