one. Using the principle of air convection and solar elevation angle, build a pig house according to local conditions
Make full use of the flow of air in different seasons to construct a pig house and assist in the provision of adjustable ventilation facilities such as shutters to control the flow and flow rate of air in pig houses. The roof and window of the pig house fully consider the sun's sunshine rules to make it suitable for pig production.
two. Utilize the principle of biological fermentation to treat excreta and solve environmental pollution problems
The fermentation bed becomes a highly efficient breeding ground for fermenting microorganisms and is the core of the lazy man's pig raising technology. The large number of beneficial bacteria used in the fermenting microorganisms, due to their growth and reproduction, rapidly degrade and digest the pig excrement, thereby achieving the effect of treating the pig manure.
three. Utilize greenhouse and cool pavilion effect to improve the somatosensory temperature
In winter, the insulation curtain is lowered, and the entire pig house becomes a warm greenhouse. At the same time, the fermentation bed also generates considerable heat, so that the abdominal temperature of the pig can be improved very well. Similarly, in the summer, the pigs felt very cool because of the almost open windows and the effect of similar pavilions such as sweeping winds and drafts.
four. Using the principle of occupation of beneficial bacteria to enhance the disease resistance of pigs and improve the efficiency of feeding and the quality of pork
The pathogenic bacteria are based on the pathogenic bacteria reaching a considerable concentration. Because of the large numbers of beneficial bacteria such as ecological lazy pigs and fermenting microorganisms, beneficial bacteria are permeated on beds, air, and even piggery corners, making beneficial bacteria an advantage. The flora has become a natural barrier to pathogens. Even a small amount of pathogenic bacteria stimulates the pig to produce a specific immune response, so that the pig can form a strong protective force.
Preparation of Fenebute
1. Prepare the first intermediate
Benzaldehyde and ethyl acetoacetate into ethanol, stir at room temperature under the catalysis of organic alkali reaction with filter cake filtration after 45 ~ 50 h, after the completion of the filter with ethanol elution filter cake, dry cake solids, then ethanol filtrate concentrated to a quarter of the original volume, to cold, concentrate filtering alcohol washing, solid, merging two solid is the first intermediate; The mole ratio of benzaldehyde, ethyl acetoacetate and ethanol is 1:2.5 -3:12-15.
2. Prepare the second intermediate
The first intermediate is added to the mass concentration of 20% sodium hydroxide solution, and the reaction is stirred at 85-90°C for 2-5 hours. After filtration, the filter cake is used for filtration. After filtration, the filter cake is washed, the filtrate is combined and cooled, and the filtrate is cooled by stirring for 3h. Solid second intermediate; The mass ratio of the first intermediate to the sodium hydroxide solution is I: 1.8-2.0;
3. Prepare the third intermediate
The second intermediate was dissolved in pure acetic anhydride solution for reflux 3 ~ 5h. After the reflux, the acetic anhydride was concentrated and dissolved with toluene. After the dissolution, ammonia water was added, and the reaction took place at 60_65°C for 1 ~ 1.5 h. Filtrate, wash and dry the precipitated solid to get the solid third intermediate; The mass ratio of the second intermediate, pure acetic anhydride solution, toluene and ammonia water is 5:1-1.2:0.5-0.8:0.5-0.8;
4. Prepare Finebute
The third intermediate was dissolved in 25% sodium hydroxide solution and cooled to _5°C ~ 10°C. After cooling, sodium hypochlorite was added slowly within 15-20min for 1h reaction, followed by ice bath reaction of 0.5 ~ 1.5 h and water bath reaction of 0.5 ~ 1.5 h. Finally, the temperature was gradually increased to 60 ~ 80°C for 1-5 h, and the reaction was cooled again after completion. After cooling, hydrochloric acid was added in the ice water bath to adjust the PH to 2, and the decolorization was stirred at room temperature. After filtration, sodium hydroxide was added in the ice water bath to adjust the PH to 6-7, and the cooling was stirred for 2 hours. The mass ratio of the third intermediate, sodium hydroxide solution and sodium hypochlorite is 1.0:0.8-1.0:1.0-1.1.
phenibut hcl powder,phenibut hcl vs faa, phenibut hcl capsules
Shaanxi YXchuang Biotechnology Co., Ltd , https://www.peptide-nootropic.com