First, raise chicken house temperature The most suitable temperature for laying hens is 18～24°C. For a long time under 15°C, the production of eggs will be affected. The egg laying rate decreases with the temperature drop, and is lower than -10. °C stops egg production. Therefore, maintaining the proper ambient temperature for laying hens in winter is an important part of improving chicken production. Prepare for cold protection before entering winter. If the temperature is too low, there should be heating equipment. It is advisable to maintain the temperature above 10°C.
Second, keep the air fresh and winter both cold insulation, can not ignore the ventilation. Because the chicken will discharge a lot of moisture during breathing and defecation, so that the humidity increases, the dust increases, attached pathogens, viruses and other pathogens floating in the air, plus chicken manure in the fermentation process produces ammonia, hydrogen sulfide, methane and other harmful gases , will impair the health of chickens and affect egg production. Long-term ventilation and ventilation will cause toxic gas poisoning, such as ammonia poisoning and hydrogen sulfide poisoning. Therefore, the windows must be frequently ventilated. Normally, open the south window or open a partial exhaust fan during the day. In winter, it is necessary to ensure that the temperature, but also to ensure that the air is fresh, generally in the morning into the coop without a pungent, smoked eyes can feel.
Third, the reasonable feeding temperature is low in winter, laying hens to resist the cold and egg production and feed intake increased, in the preparation of diet should be appropriate to increase the heat more feed, metabolic energy per kilogram diet should not be less than 2750 kcal Cake feed should account for 10% to 20%. At the same time, 2% to 3% of lipid diets can be added to feed during the winter season. To ensure adequate drinking water in the winter, it is best to drink clean warm water.
Fourth, artificial supplemental light hens in the laying period to gradually increase the light time to 12 to 14 hours, the longest can not exceed 16 hours. Artificial supplemental lighting is better for morning lighting. According to the length of the night, it was decided to turn on the light in the morning and it was turned off until dawn. The total amount of natural light and artificial lighting time was 12 to 14 hours. Artificially supplementing the light to install a 25-watt electric lamp on every 10 square meters of ground. It is required to have a lamp umbrella. The lamp should be about 2 meters away from the ground and the electric light should be distributed evenly. Light bulbs should always be kept clean and bright.
V. Timely elimination of low-yielding chickens and discontinued chicken hens' egg production is not only affected by external conditions, but also by internal factors. In order for hens to produce more eggs, they must select good breeders. High-yielding chicken breeds also have individual differences, so we must regularly eliminate low-yielding chickens and discontinue chickens to avoid wasting feed. Identification of low-yielding chickens and high-yielding chickens is mainly carried out in the professional production of chickens from the appearance and physiological changes of chickens.
1. High-yield chickens have large, ruddy, elastic, and feel warm with hands. Low-yielding chickens or discontinued chickens have small, shriveled, unglazed hands and cool touches. The sick chicken is small and pale.
2. The pubic symphysis of laying hens is more than 3 fingers, and the production chickens can't fit two fingers.
3. The high-yield chicken is soft and elastic between the end of the sternum and the pubis, and the abdomen is large. The distance between the sternum and the pubis can be more than 4 fingers. The low-yield chicken and the discontinued chicken are small in size and inelastic.
4. After the high-yielding chickens were put into production, the yellow pigments of the skin faded from the anus, eyelids, ears, tendons, feet and knee joints in turn. The low-yielding or discontinued chickens faded slowly or remained yellow.
5. After the high-yield chickens have been put into production for a period of time, the feathers are relatively rough and dry, and the feathers of the low-yielding chickens are still shiny and plump.
6. High-yielding chickens start late for moulting, and some high-yielding chickens change their feathers to produce eggs. Low-yielding chickens begin to moult early and discontinue production after moulting.
Second, keep the air fresh and winter both cold insulation, can not ignore the ventilation. Because the chicken will discharge a lot of moisture during breathing and defecation, so that the humidity increases, the dust increases, attached pathogens, viruses and other pathogens floating in the air, plus chicken manure in the fermentation process produces ammonia, hydrogen sulfide, methane and other harmful gases , will impair the health of chickens and affect egg production. Long-term ventilation and ventilation will cause toxic gas poisoning, such as ammonia poisoning and hydrogen sulfide poisoning. Therefore, the windows must be frequently ventilated. Normally, open the south window or open a partial exhaust fan during the day. In winter, it is necessary to ensure that the temperature, but also to ensure that the air is fresh, generally in the morning into the coop without a pungent, smoked eyes can feel.
Third, the reasonable feeding temperature is low in winter, laying hens to resist the cold and egg production and feed intake increased, in the preparation of diet should be appropriate to increase the heat more feed, metabolic energy per kilogram diet should not be less than 2750 kcal Cake feed should account for 10% to 20%. At the same time, 2% to 3% of lipid diets can be added to feed during the winter season. To ensure adequate drinking water in the winter, it is best to drink clean warm water.
Fourth, artificial supplemental light hens in the laying period to gradually increase the light time to 12 to 14 hours, the longest can not exceed 16 hours. Artificial supplemental lighting is better for morning lighting. According to the length of the night, it was decided to turn on the light in the morning and it was turned off until dawn. The total amount of natural light and artificial lighting time was 12 to 14 hours. Artificially supplementing the light to install a 25-watt electric lamp on every 10 square meters of ground. It is required to have a lamp umbrella. The lamp should be about 2 meters away from the ground and the electric light should be distributed evenly. Light bulbs should always be kept clean and bright.
V. Timely elimination of low-yielding chickens and discontinued chicken hens' egg production is not only affected by external conditions, but also by internal factors. In order for hens to produce more eggs, they must select good breeders. High-yielding chicken breeds also have individual differences, so we must regularly eliminate low-yielding chickens and discontinue chickens to avoid wasting feed. Identification of low-yielding chickens and high-yielding chickens is mainly carried out in the professional production of chickens from the appearance and physiological changes of chickens.
1. High-yield chickens have large, ruddy, elastic, and feel warm with hands. Low-yielding chickens or discontinued chickens have small, shriveled, unglazed hands and cool touches. The sick chicken is small and pale.
2. The pubic symphysis of laying hens is more than 3 fingers, and the production chickens can't fit two fingers.
3. The high-yield chicken is soft and elastic between the end of the sternum and the pubis, and the abdomen is large. The distance between the sternum and the pubis can be more than 4 fingers. The low-yield chicken and the discontinued chicken are small in size and inelastic.
4. After the high-yielding chickens were put into production, the yellow pigments of the skin faded from the anus, eyelids, ears, tendons, feet and knee joints in turn. The low-yielding or discontinued chickens faded slowly or remained yellow.
5. After the high-yield chickens have been put into production for a period of time, the feathers are relatively rough and dry, and the feathers of the low-yielding chickens are still shiny and plump.
6. High-yielding chickens start late for moulting, and some high-yielding chickens change their feathers to produce eggs. Low-yielding chickens begin to moult early and discontinue production after moulting.
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