Penglai Successfully Popularized Mink Immunization Technology

Yantai Penglai science and Technology Bureau invited experts to appraise the "mink immunization procedure research and popularization" project undertaken by Penglai animal husbandry and veterinary workstation. technology Reaching the advanced level in China.

For the first time, the experiment was conducted for the first time to systematically test the growth and decline of maternal antibodies and the interference of maternal antibodies and the growth and decline of maternal antibodies in mink virus enteritis. mink The growth and decline of maternal antibodies in viral enteritis were systematically studied, and the best immunization procedure was screened out.

The implementation of this project can significantly improve canine distemper and viral enteritis in mink. Antibody level To reduce the incidence and raise the survival rate of mink, the annual economic benefit is about 80000000 yuan, which is of great significance for the healthy, rapid and sustainable development of mink industry in Penglai.

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The Haikou experimental station of the Chinese Academy of Tropical Agricultural Sciences has taken the lead in the study of banana in China. In China, there are about about 10000000 tons of banana waste discarded each year, of which 1% to 2% of the extracted banana stems are available. Worldwide, bananas yield about 1.065 billion tons a year, and the amount of fiber available is considerable.

According to Sheng Zhanwu's statement, banana fiber is a resource to be exploited and utilized. Banana fiber can be divided into banana stem fiber and banana leaf fiber. Banana stem fiber is found in the phloem of banana tree and belongs to bast fiber. Banana leaf fiber is contained in leaves of banana tree and belongs to leaf fiber. The data show that there are about 130 bananas in the world, with the largest output in Central America, followed by Asia. Banana cultivation in China is mainly distributed in Guangdong, Guangxi, Fujian, Taiwan, Yunnan and Hainan, and there are also a few cultivation in Guizhou, Sichuan and Chongqing. Bananas are not only rich in resources, but also relatively concentrated in the region, which is conducive to the implementation of industrialization.

Data show that some foreign enterprises have developed banana viscose fiber. However, the utilization of banana fiber in China is still at the level of natural fiber. Sheng Zhanwu said that the banana fibers developed by them were not pulping, the same as ramie, and also natural fibers.

The main chemical components of banana phloem were cellulose, followed by hemicelluloses, lignin, pectin substances, water soluble substances and wax. The cellulose content in banana phloem is lower than that in flax and jute, but its content is about 60%. Compared with linen and jute, banana has a higher content of hemicellulose and lignin, and the two accounts for more than 30% of the chemical composition of banana fiber. Therefore, it is relatively difficult to manufacture, and it also causes the luster, softness, elasticity and spinnability of banana fiber, which are all worse than flax and jute. However, the results showed that the crystallinity and orientation of banana stem fiber were lower than that of flax and jute, indicating that the arrangement of macromolecules in banana fibers was not as regular as that in flax and jute. Therefore, compared to flax and jute, banana fiber has the characteristics of low strength, large deformation, low birefringence, easy to absorb moisture and moisture, and easy to dye.

In fact, the research on banana fiber in China is not only limited to degumming, but also its high fiber has entered the market. Mr. Liang, a saint bamboo household textile company, said they had developed a high banana fiber. However, the cost performance of banana fiber has no advantage. Mr. Liang said that the market price of banana fiber is 70 thousand yuan / ton to 80 thousand yuan / ton, and its application is basically the same as that of bamboo fiber. Compared with the antibacterial function of bamboo fiber, banana fiber has no outstanding selling points. And bamboo fiber has been accepted by the market, so they have abandoned the development and production of banana fiber.

The fabric made of banana fiber has also won the national fabric award. Mr Liang said that they were also very optimistic about the development prospects of this variety, and had sent a large number of samples to customers. However, after considering the customers comprehensively, they did not show positive willingness to purchase. They also gradually realized that the market's enthusiasm for banana fiber was not as strong as they expected.