In winter, laying hens are under cold stress, what should we do in management?
In chicken production, especially under the conditions of intensive production, chickens have a certain strain and adaptability to the stimulation of stocking density, climate, immunization, transfer, grouping, beak cutting, light and other factors. If the intensity of these stimulations If it is too large or lasts too long, and exceeds the body's physiological tolerance, it will affect the growth, development, reproduction and disease resistance of the chicken, and even directly cause death. In the cold winter, chickens are most susceptible to cold stress, which affects the laying rate of laying hens, reduces benefits and increases costs. In order to avoid cold stress, you should be prepared and take appropriate measures.
In order to keep warm in winter, the windows and doors are often closed and ventilation is not carried out. As a result, the air in the house is dirty, the humidity increases, and the litter is damp. It is not good for the growth of chicken feathers and feet, but it is also due to the deterioration of the air environment. , Ammonia, hydrogen sulfide, carbon dioxide, methane and skatole, etc. doubled, dust and microorganisms exceeded the hygiene standards of the chicken house, causing respiratory diseases in chickens and causing economic losses. Therefore, it must not be purely for heat preservation, without ventilation, and a certain airflow rate in the house should be maintained.
Chickens tend to shrink into a ball in a cold hen house. They can decompose body fat to generate a lot of heat to resist the cold, or increase their feed intake to adjust themselves. This not only reduces physical fitness, but also reduces the feed conversion ratio, which is very uneconomical. Therefore, doing a good job of cold-proof and heat preservation in chicken coops is particularly important in winter feeding management. The optimum temperature for laying eggs in the hen house is 13℃~23℃, if it is lower than 13℃, the laying rate of laying hens will decrease.
In winter, the proportion of high-energy in the chicken feed should be increased, and the protein content should be appropriately reduced. The amount of feed should be increased appropriately to ensure that growth and laying are not affected by low temperature. When the temperature gradually rises or falls, the chickens can adjust their feed intake to meet their thermal energy needs. If the cold current comes and the temperature drops suddenly, the chickens themselves cannot adjust their feed intake at once, which will cause great stress.
Therefore, when raising chickens in winter, we should pay attention to the weather forecast, and strive to increase the amount of feed for each chicken 1 to 2 days before the cold snap to cope with the lack of heat energy when the temperature drops. Or add soybean oil to feed to increase energy and increase the level of metabolizable energy. When the cold current passes and the temperature rises, the original feed amount will be restored immediately to avoid over-fertilization. Cold stress belongs to environmental stress. In addition, physiological stress and management stress. As a breeding manager, you should understand the physiological habits of chickens. According to the growth characteristics of chickens, start with the environment and breeding to prevent and control Stress.
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