First, airflow
In the early spring, the air flow will reduce the temperature, increase the amount of heat released by the body, and exacerbate the effects of cold. However, with no air flow, the harmful gas and excess steam in the house are not easily discharged, which also affects the chicken's health and egg production. The airflow rate around the chicken body is 0.1m/s to 0.2m/s, and the maximum is not more than 0.25m/s. The air introduced into the house should be evenly distributed to all parts of the house to prevent unevenness and dead angle. Blow directly to the chicken body. Block all gaps on the roof, ceiling, doors and windows.
Second, the temperature
The suitable temperature for laying hen house should be 13°C～23°C, the most suitable temperature is 16°C～20°C, the temperature difference between the vicinity of the ceiling and the ground does not exceed 2.5°C～3.0°C, and the temperature difference between the wall and the center of the chicken house does not exceed 39°C. °C. Door closures can be used to seal the windows, set wind barriers, paint the walls, add insulation materials to the ceiling, increase stocking density, use multi-layer cages, and hay to pave the ground.
Third, humidity
Under the premise of the Sherwin warranty, the relative humidity in the house is guaranteed to be 50% to 60%. Try to reduce the amount of water in the house. Strengthen the insulation of the chicken house, do not allow the temperature of the house to fall below zero, and prevent moisture condensation. The ground is covered with hay and aired in time. Timely removal of contaminated toilet waste. Ensure that the ventilation system is good and discharge excess water vapor in time.
The virus is composed of a nucleic acid molecule (DNA or RNA) with a protein consisting of non-cell morphology of the campal life of the living body. The general symptoms of viral infection are fever, headache, cough and other symptoms of systemic poisoning and viral host and invasion of tissues and organs leading to inflammatory symptoms caused by local symptoms (diarrhea, rash, liver function damage, etc.). Different symptoms of the different virus, some viruses can also damage the myocardium, causing viral myocarditis. There are two types of viral infections, mostly recessive infections (subclinical infections), and a few are dominant infections. Dominant infection can be divided into acute infection and persistent infection. There are many ways of antiviral infection, such as direct inhibition or killing of viruses, interference with virus adsorption, prevent viruses from penetrating cells, inhibit viral biosynthesis, inhibit viral release or enhance host antivirus capabilities. At present, there are several major types of antiviral drugs: Anti-Respiratory virus infection drugs, anti-immune virus drugs, anti-hepatitis virus drugs, anti-herpes virus drugs.
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