Warm winter and spring climate is cold and changeable, which brings a lot of inconvenience to chicken production, especially the effect of low temperature on laying hens is very obvious. Therefore, under normal circumstances, we can take appropriate increase in breeding density, and close the doors and windows, add straw, drinking warm water and stove heating and other ways to keep cold insulation, so that the minimum temperature maintained at 3 °C ~ 5 °C.
In winter and spring ventilation, due to lower temperatures, the doors and windows of the chicken house are closed and ventilation is reduced. However, harmful gases such as ammonia gas, carbon dioxide and hydrogen sulfide generated from the chicken exhaust gas and chicken manure accumulation will accumulate in the chicken house, and the chicken will be easily induced. Respiratory and other diseases. Therefore, the winter and spring chickens should effectively handle the relationship between ventilation and warmth, timely removal of feces and debris in the chicken house, to ensure clean air. When the weather is good at noon, the windows should be ventilated so that the air in the house is fresh and the oxygen is sufficient to prevent the problem. However, be careful when ventilating. Do not blow cold air directly on the chicken to prevent the chicken from catching a cold.
The low ventilation and humidity in winter and spring houses reduce the evaporation of water, and the hot air in the house will contact the icy roof and the wall will condense into a large amount of water droplets, causing excessive humidity in the house, giving bacteria and parasites. Mass reproduction creates conditions. Therefore, winter and spring must strengthen management, pay attention to keep the house clean and dry, timely repair of damaged sinks, avoid over-filling with too much water, and strictly forbid water to the ground.
Disinfection and disinfection work should be carried out throughout the entire process of raising chickens. The temperature in winter and spring is low, and the frequency of bacteria activity decreases. However, the winter and spring weather is cold and the chicken's resistance is generally weakened. If you ignore the disinfection, it can easily lead to outbreaks of the disease and cause heavy losses. Therefore, winter and spring must do a good job of disinfection and regular disinfection.
Supplementary illumination is the driving force of all life activities. In winter and spring, nights are long, and laying hens often suffer from decreased light production. In order to overcome this natural defect, artificial supplemental lighting can be used to make up for it. In general, the total time of daylight should not be less than 14 hours, but it should not exceed 17 hours (more than 17 hours will cause chicken physiology disorders). For example, the natural daytime light is 12 hours, and it is necessary to artificially supplement light for 2 hours to 5 hours every day.
Energy-enhancing chickens rely on the energy feeds they eat to obtain heat energy to maintain body temperature. The lower the ambient temperature in winter and spring, the more heat energy the chickens use to protect against the cold. It has been determined that winter and spring chickens consume about 10% more food than other seasons. Therefore, in the feed of winter and spring chickens must ensure sufficient energy feed, in addition to ensuring a certain percentage of protein, but also should be appropriate to increase high-energy feed containing starch and sugar, in order to meet the chicken's physiology and production needs.
The resistance of strong winter and spring chickens has declined. Special attention must be paid to the prevention of epidemics and regular immunizations. According to the actual situation, some preventive drugs can be regularly targeted, and the content of vitamins and trace elements in feeds can be appropriately increased, the constitution of chickens can be enhanced, the ability of chickens to prevent diseases and production capacity can be improved, and the aquaculture efficiency can be improved.
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