Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Poverty alleviation or mitigation through science and technology is one of the strategies implemented in China. Grassbased Livestock Husbandry aims to develop sustainable and profitable ruminant farming systems and is an attractive and effective countermeasure for poverty alleviation in grasslands of China. Our survey indicated that 152 counties in the grassland region are in poverty, representing 56.7% of the total 268 counties. Hence, grasslands are the regions where the “hard core” poverty populations reside. As a pilot initiative, Chinese Academy of Sciences has launched projects in the grasslands in the north and the moutain meadows in the south to couple forage cultivation and processing with husbandry of elite local livestock breeds by improving the efficiency of converters of feed to products, and the projects have substantially helped local people increase their household incomes. Nationwidely, the grassland occupies more than 40% of the total national land area, hence the sustainable development of grass-based livestock farming systems could play a central role and have great potential in poverty alleviation.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： The construction of a scientific and technological system of ecological grass-based livestock husbandry (GLiH) provides technical support for the “Macroscopic Food Security” concept and the“National Strategy of Giving Priority to Ecology and Green Development” in the new era. At the same time, it represents an urgent need for the domestic circulation. Scientific grass processing and production of forage grass can help form the GLiH industrial chain by connecting the front-end “forage grass cultivating” and back-end “livestock raising”. However, China still faces many problems in terms of forage grass processing and production, and the development of the grass industry. On one hand, a series of technical bottlenecks exist in forage grass processing and production, namely nutrition loss, limited nutritional value, and the difficulty of quality and security control. On the other hand, a variety of problems in the development of the grass industry, such as insufficient standardization, commercialization, industrialization, marketization, and intelligentization are also present. The above problems not only limit the healthy development of the grass industry, but also lead to the discrepancy between forage grass and livestock, which greatly affects the formation and healthy development of the core industrial chain of GLiH. Here we describe the strategic demands of forage grass industry development, and discuss the theoretical and technical bottlenecks that need to be solved through the processing and production of forage grass products. We then put forward specific suggestions for the scientific processing and production of forage grass and the healthy development of grass industry. We hope that these recommendations will provide a theoretical basis and a feasible way to improve the technological level of forage grass processing and production in China, to build a high-quality grass industry, and realize the deep coupling of GLiH industrial chain.
Subjects: Biology >> Bioengineering submitted time 2018-08-13 Cooperative journals: 《中国生物工程杂志》
Abstract：对一株解淀粉芽孢杆菌TF28产生的抗菌脂肽进行分离鉴定及抑菌活性研究，采用酸沉淀、乙酸乙酯和甲醇萃取技术制备了抗菌脂肽粗提物，经过2次HPLC分离纯化，在保留时间32-42min内获得8个抗菌脂肽纯品，经MALDI-TOF-MS鉴定为芬芥素（fengycins），对尖孢镰刀菌和禾谷镰刀菌显示较强的抑菌活性，该研究为提高菌株TF28抗菌脂肽产量的定向遗传改造奠定基础。
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