(1) The application of animal embryo engineering technology in animal reproduction includes cryopreservation technology, embryo transfer, embryo production in vitro and sex identification. Among them, embryo freezing technology further overcomes the time limit of female livestock cycle in embryo transfer and solves the problem of long-distance transportation
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(2) The application of feed biotechnology in feed production is a branch of science that studies and develops new feed resources and feed additives (such as functional microbial agents, feed enzyme preparations, immune regulators, growth regulators, etc.). ) and its nutritional value, biological efficacy and mechanism of action. Feed biotechnology can be used to develop feed resources (such as yeast protein powder, seaweed, etc. ), new feed (such as biological feed), improve the utilization rate of protein in feed (such as fermented soybean meal, functional peptide protein, etc.). ), through microbial fermentation of roughage, improve the nutritional value and palatability of roughage, and develop various green feed additives, such as protease, oligosaccharide, cellulase, phytase, organic acid, microecological preparation, mildew remover, etc. In a word, feed biotechnology is widely used in improving feed digestibility, eliminating anti-nutritional factors, improving feed utilization value, improving animal health and product quality.
(3) Application of Veterinary Biotechnology in Prevention and Treatment of Livestock and Poultry Diseases At present, monoclonal antibody kits are widely used in clinical diagnosis, differential diagnosis, virus typing and epidemiological research of animal infectious diseases. Using recombinant DNA technology to produce genetic engineering vaccines for livestock and poultry is an important field of livestock and poultry control biotechnology. Genetic engineering vaccines for livestock and poultry include bacterial, viral, parasitic and fungal engineering vaccines, among which genetic engineering vaccines for preventing intestinal colibacillosis of livestock and poultry have been commercialized.
(4) The application of environmental biotechnology in improving the breeding environment. Microecological preparations and fermentation technology have been widely used in the environmental control of animal pens and the fermentation treatment of animal manure. A variety of beneficial microorganisms (yeast, Bacillus subtilis, yeast, etc.). ) diluted in a certain proportion and sprayed into animal pens, or oral microecological preparations (such as mixing materials or drinking water) can obviously improve the air quality and breeding environment in the pens; Secondly, using selected microecological agents to ferment livestock manure can effectively degrade and transform sulfide and nitride in manure, produce bio-organic fertilizer, reduce environmental pollution and improve the comprehensive benefits of aquaculture.