The special wild boar is a kind of wild boar which uses the pure wild boar as a parent and the lean boar as a female parent for breeding after multiple breeding and domestication. The special wild boar not only maintains the advantages of high lean meat, tender meat, strong disease resistance and wide adaptability of the wild boar, but also maintains the high lean meat percentage, fast growth and development, high feed utilization rate, and strong fertility of the lean type pigs. The characteristics of gentle and good feeding, and to overcome the defects of the small wild boar, slow growth, seasonal reproduction, and fewer litter size. At present, special wild boar aquaculture has become a popular option in the aquaculture industry and is listed in the promotion project of the Spark Program of the Ministry of Science and Technology. The construction of special wild boars on pig farms is easy to be frightened. The site should be high-dry, flat, leeward, with sufficient water and convenient transportation, and be far from villages, residential areas, factories, mines, schools and biological products plants. However, the fence of special wild boars is higher than that of ordinary pigs, which is generally 1.6 meters high. Steel gates are used for the doors. The living area of ​​the keeper is separate from the production area of ​​the special wild boar and cannot be mixed together. Special wild boar sheds are best placed in high ground areas, easy to drain, and easy to light and ventilation (the original home pig house can also be reared for minor modifications). The new enclosure outside the nest requires cement paving. The shed asks for a nest room and an outside nest room. Li Wo Room for special wild boar sleeping, litter size, length of about 3 meters, width of about 2.8 meters, sheds and sheds, built general style of pigsty, covered with straw or wheat straw ceiling, outside the nest room for boar defecation , diet, exercise and sun exposure, about 3 meters long, about 2.8 meters wide, fenced with cement surface, building height of 1.7-1.8 meters. A water tank can be built at the root of the wall for drainage, using a masonry cement structure with a length of 1 meter, a width of 0.5 meters and a depth of 23 centimeters. It should be noted that the drinking pool is not easy to build too deep or too narrow, otherwise, when the summer weather is hot, the swine cubs will catch cold in the pool, which will cause suffocation and stillbirth in pregnant sows. A 1 meter wide passageway should be left between the inner and outer chambers to facilitate the free access of wild boars. The gates are generally left in front of the nest room. Feeding management Feeds and feeding management methods for feeding special wild boars are roughly the same as for domestic pigs. Special wild boars are resistant to roughage, and the crude fiber composition in the diet should be increased. According to practice, the feed formula for special wild boars is: corn 61%, bran l5%, brangrass 8.7%, rice bran 6%, rapeseed cake 5%, bean cake 3%, bone meal 2%, salt 0.3%. In order to reduce the biting of each other, it is best to give young branches and stems and leaves of wild vegetables after eating. Farmhouse common tender corn, red sorghum, wax gourd, potato, sweet potato, peanut meal, sweet potato soup, corn ear, squash, eggplant, fresh mulberry leaves, fresh jasmine leaves, black locust leaves, carrots, white radish, Chinese cabbage, floor-standing apples, Pears are foods that they like to eat. Slaughter is usually carried out when the special wild boar is 8-9 months old and weighs about 90 kg. Disease control of special wild boars is the same as that of domestic pigs. Due to the exceptionally strong disease resistance of special wild boars, adult wild boars rarely become ill. However, wild boars are susceptible to yellow and white tinea and can be controlled by conventional drugs. Although the special wild boar has strong disease resistance, it is still necessary to pay attention to environmental sanitation and disinfection of pig farms in the management, and to ensure that the pig farms are warm in winter and cool in summer. In order to protect the piglets from cold in the winter, a warm yurt-like lap can be built in the pigsty. In the summer, pigs can be planted around the sty and vine plants can be shaded, and the pigs are often bathed. Note Now, the breeding of special wild boar has become a hot spot for special breeding. The supply of special wild boar seedlings is in short supply, and the prices have been rising. Some farms use pure wild boars to impersonate purebred wild boars (since pure boars are twice as expensive as wild boars), the offspring of the domestic pig (male) hybrid (mother) have only 12.5 pedigrees. %-25%) Pretending to be a special wild boar. Therefore, in the purchase of special wild boar seedlings, according to the characteristics of the special wild boar color, shape and appearance to be identified to ensure the quality of introduction. In the breeding process, we must pay attention to purification and rejuvenation. Purebred wild boars are only used for breeding, special wild boars are used for commercial purposes, and hybrid algebra must be controlled during the crossbreeding process. Generally, it should not exceed three generations. It must be emphasized that the feeding of special wild boar must be carried out in accordance with the requirements of the green livestock product breeding technology. The advantage of the special wild boar is that the game has a strong flavor, no pollution, safety, high quality, and rich nutrition. Therefore, it is necessary to ensure its "green" advantage in the special wild boar feeding and management process. The feeds and feed additives used must comply with the relevant provisions of the "Food Standards for Feeds and Feed Additives for Green Foods". The veterinary drugs used for the prevention and treatment of diseases must meet the requirements in the "Guidelines for the use of veterinary drugs for green foods." Clenbuterol hydrochloride (commonly known as Clenbuterol) must not be used.
An organic compound formed by dehydration of amino acids, containing carboxyl and amino groups, and being amphoteric. Also known as "peptide".
Two, one of the amide. It consists of two or more amino acids joined by the amino group of one amino acid to the carboxyl group of the other. An amino acid cannot be called a peptide, nor can a peptide be synthesized, but must be a compound of two or more amino acids linked by a peptide bond. Compounds where two amino acids are linked by a peptide bond are called dipeptides; A compound with three amino acids linked by peptide bonds is called a tripeptide, and so on, a compound with thirty-four amino acids linked by peptide bonds is called a thirty-four peptide.
A peptide is a chain of polymers of amino acids
A peptide is a chain of polymers of amino acids
Three, is related to the biological body of a variety of cell functions of biological active substances. Hundreds of peptides have been found in living organisms, which are essential participants in the body's complex physiological activities. All cells can synthesize peptides and their functional activities are regulated by peptides. It involves hormones, nerves, cell growth and reproductive fields, and its importance lies in the regulation of various systems, organs and cells in the body. The physiological and pharmacological effects of enzymatic polypeptides are mainly to activate related enzymes in vivo, promote the permeability of intermediate metabolic membrane, or affect specific protein synthesis by controlling DNA transcription or translation, and eventually produce specific physiological effects or play their pharmacological effects. Peptide is better than amino acid, one is faster than amino acid absorption; Second, it is absorbed by the body in a complete form; Third, active absorption (amino acids are passive absorption); Fourth, low consumption, compared with amino acids, peptide absorption has the characteristics of low consumption or no energy consumption, peptide absorption through the duodenum, directly into the blood circulation, their own energy nutrition transported to various parts of the human body; Fifth, peptide absorption is less than amino acid, with the characteristics of unsaturated; Sixth, there are only 20 kinds of amino acids, with countable functions, while peptides take amino acids as substrates, which can be synthesized into hundreds of thousands of kinds.
It is mainly divided into medical polypeptide drugs, peptide antibiotics, vaccines, antimicrobial peptides for agricultural use, small peptides for feed, cosmetics for daily use, soybean polypeptides for food, corn polypeptides, yeast polypeptides and sea cucumber peptides.
From the functional point of view, can be divided into antihypertensive peptide, antioxidant peptide, cholesterol lowering peptide, opioid active peptide, high F value oligopeptide, food strong taste peptide and so on.
Active peptide, and nutrition, hormone, enzyme inhibition, regulation of immunity, antibacterial, antiviral, antioxidant has a very close relationship. Polypeptides are generally divided into: polypeptide drugs and polypeptide health products. Traditional peptide drugs are mainly peptide hormones. The development of peptide drugs has been developed into various fields of disease prevention and treatment, especially in the following fields. [2]
Antitumor polypeptide
Tumorigenesis is the result of many factors, but ultimately all involve the regulation of oncogene expression. In 2013, many tumor-related genes and regulatory factors have been discovered. Screening peptides specifically bound to these genes and regulatory factors has become a new hot spot in the search for anticancer drugs. For example, somatostatin has been used to treat endocrine tumors of the digestive system; American scholars found a hexapeptide can significantly inhibit adenocarcinoma in vivo; Swiss scientists have discovered an octapeptide that induces apoptosis in tumor cells. [2]
Antiviral polypeptide
By binding to specific receptors on host cells, viruses adsorb cells and rely on their own specific proteases for protein processing and nucleic acid replication. Therefore, peptides binding to host cell receptors or active sites such as viral proteases can be selected from the peptide library for antiviral therapy. In 2013, many small peptides with antiviral properties have been screened from peptide banks in Canada, Italy and other countries, and some small peptides have entered the stage of clinical trials. In June 2004, the Chinese Academy of Sciences institute of Microbiology came out of the news, which was undertaken by the Chinese Academy of Sciences known
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