Crop straw is expected to be the main forage for livestock and poultry in China

Introduction: Xinhua news agency, Hohhot, May 10 (reporter Li Yunping) some experts believe that in the face of severe shortage of coarse feed and increasing food pressure, crop straw is expected to become the main forage for livestock and poultry in China Lu Dexun, honorary director of the Institute of animal nutrition, Inner Mongolia Academy of Animal Sciences, said that for food crops, about half of the organic matter produced by photosynthesis is grain, and the other half is straw In China, the annual output of all kinds of straw is about 640 million tons, the output of pods and chaff is about 115 million tons, and the total output of them is 760 million tons, which is more than 50 times of that of grassland in North China According to rough estimates, if 40% of the national straw feed is processed and utilized, it will produce feed value equivalent to 112 million tons of grain, and the country can raise 100 million more cattle At present, although there are many ways to use straw in China, such as returning farmland, burning fire, raising livestock, repairing houses, etc., the overall utilization rate is only more than 10%, and Hebei, Shandong, Liaoning and other provinces with better straw development and utilization are less than 30% The utilization rate of crop straw is low, which usually leads to waste of resources, direct combustion and environmental pollution According to Zhang Jikun, a doctoral student in ruminant nutrition at Inner Mongolia Agricultural University, the shortage of roughage has become a bottleneck restricting the development of herbivorous livestock and poultry in China Crop straw can be the main source of roughage for a long time and play an important role in the development of herbivorous livestock and poultry We mainly overcome the shortcomings of high fiber content and low crude protein content when straw is converted into feed In order to make full use of the nutritional value of straw in animal husbandry, we must use the most advanced theory of system nutrition to guide, and use system integration technology to improve the utilization rate of straw According to Zhang Jikun, the technology of whole plant silage and micro storage of corn should be promoted while scientific and reasonable utilization of crop straw In view of the nutritional defects of straw, a variety of special materials for herbivorous livestock were developed and screened, which are suitable for the popularization and application in beef cattle, beef sheep and dairy cattle.