The ideal ambient temperature for laying hens is 15 to 25°C, with the best performance in this temperature range. When the ambient temperature exceeds 30°C, the chicken must use the increased number of breaths to dissipate body heat, and then the feed intake decreases, the drinking water increases, the excrement becomes thinner, the egg production decreases, and the egg becomes thinner and the broken egg increases. Loss to layer production. In order to keep laying hens high in summer during high temperatures, farmers can take the following measures in light of local conditions.
1. Ventilation and cooling. For houses with ventilated facilities, the operating time of the fans must be increased and the ventilation interval should be shortened. Wet curtains should be hung at the air inlet to increase the humidity of the houses. In a naturally ventilated house, all vents should be opened for maximum ventilation. Conditional ventilation fans may be installed in the house to increase air convection between the house and the outside world and reduce the temperature of the house.
2. Greening and cooling. Planting trees and rattan plants on the sunny side of the coop, and planting flowers on the ground, the plant has greened the house, reduced heat radiation, absorbed carbon dioxide, reduced the density of dust, and purified the air inside and outside the house.
3. Spray water to cool down. In the event of poor natural ventilation at high temperatures, fresh and cool deep well water is sprayed directly into the chicken body and chicken house at noon and afternoon each day using a high-pressure spray gun or sprayer to absorb water from the house using water atomization.
4. Shade sunscreen. In the hen house's sunny side, direct sunlight, doors and windows, and sheds in the sheds, set up shade nets to avoid direct sunlight. After the air passes through the shade net, it becomes cool and enters the house, which reduces the temperature in the house by 2 to 3°C.
5. Water curtain cooling. Use a pump to make a curtain in the door and window of the chicken house. The air is cooled down through the curtain to enter the house. The temperature in the house can be 5 to 6°C lower than the temperature outside the house.
6. Reduce the stocking density. If conditions permit, the cages can be stocked within 75% to 80% of the normal feeding volume in the cage or on the free-range ground, which can effectively reduce the temperature in the house.
7. Add grease. The consumption of summer chickens is reduced, so the allocation of energy feeds should be reduced, generally between 5% and 10%. Can use animal and vegetable oils instead of energy feeds, plus feed 1% to 2% of fats and fats, due to the amount of heat dissipated by the digestive fat is less than the amount of energy dissipated by the digestive energy feed.
8. Appropriately increase protein feed. In summer, as the feed intake of the chicken is reduced, the intake of protein is insufficient, which directly affects the formation of eggs. Therefore, in order to meet the needs of the laying hens for various amino acids, the protein level in the diet can be increased by 1% to 2%.
9. Appropriate increase in calcium. Calcium is the main component of the formation of eggshells, and the calcium content of the diet should be kept as low as 3.5%.
10. Add vitamin C. Chickens in heat stress need a lot of vitamin C to dissipate heat, and the high temperature also reduces the ability of the chicken to synthesize vitamin C. Adding vitamin C to feed can reduce death, increase egg production, and the amount can be adjusted to normal. 2 times the amount.
11. Add sodium bicarbonate. Sodium bicarbonate has the effect of cooling the sun, which can increase the production of laying hens and increase the quality of the shells. It is beneficial to add 0.2% to 0.3% of sodium bicarbonate to feed.
12. Add green feed. Green feed has good palatability, is rich in vitamins, can increase feed intake of laying hens, and is good for heatstroke. It can add about 50 grams per day in the diet, such as fresh watermelon rind, bitter leeks, and melons. Wait.
13. Supply fresh cold water. Keep a clean, cool and sanitary drinking water in the sink throughout the day. It is best to use deep well water and keep it flowing. If necessary, add ice cubes to the water to reduce the water temperature.
14. Adjust the feeding time. The feed is now ready for use. Feed it as much as possible during the cool days of the 1st, from 4:00 to 5:00 in the morning, from 10:00 to 11:00 in the morning and from 6:00 to 7:00 in the evening, after turning on the light in the morning and evening. Each time before turning off the lights, they will be fed one more time.
15. Disinfect chicken. Can be combined with spray water cooling to carry chicken spray disinfection. 2 to 3 times a week with chicken disinfection, can choose to use high-efficiency and low toxicity drugs such as 100 poisoning, peracetic acid and so on. At the same time do a good job house flies, mosquitoes, pest control work.
16. Timely excrement. There are clearing machines for cleaning twice a day, and artificial cleaning for cleaning once a day. The flat-raising people must change their litters frequently, often disinfect them, and keep them clean inside and out.
17. Strengthen the observation of chickens. Observe the feed intake, drinking water and defecation of the chickens at any time, take measures as soon as they are found to be abnormal, and eliminate the poor quality chickens in time to reduce the spread of disease and economic losses.
18. Keep the house as quiet as possible. Cleaning, quail eggs, feeding water, removing manure, disinfection and other actions should be light, to avoid noise interference, reduce the amount of chicken exercise and prevent frightening groups.
1. Ventilation and cooling. For houses with ventilated facilities, the operating time of the fans must be increased and the ventilation interval should be shortened. Wet curtains should be hung at the air inlet to increase the humidity of the houses. In a naturally ventilated house, all vents should be opened for maximum ventilation. Conditional ventilation fans may be installed in the house to increase air convection between the house and the outside world and reduce the temperature of the house.
2. Greening and cooling. Planting trees and rattan plants on the sunny side of the coop, and planting flowers on the ground, the plant has greened the house, reduced heat radiation, absorbed carbon dioxide, reduced the density of dust, and purified the air inside and outside the house.
3. Spray water to cool down. In the event of poor natural ventilation at high temperatures, fresh and cool deep well water is sprayed directly into the chicken body and chicken house at noon and afternoon each day using a high-pressure spray gun or sprayer to absorb water from the house using water atomization.
4. Shade sunscreen. In the hen house's sunny side, direct sunlight, doors and windows, and sheds in the sheds, set up shade nets to avoid direct sunlight. After the air passes through the shade net, it becomes cool and enters the house, which reduces the temperature in the house by 2 to 3°C.
5. Water curtain cooling. Use a pump to make a curtain in the door and window of the chicken house. The air is cooled down through the curtain to enter the house. The temperature in the house can be 5 to 6°C lower than the temperature outside the house.
6. Reduce the stocking density. If conditions permit, the cages can be stocked within 75% to 80% of the normal feeding volume in the cage or on the free-range ground, which can effectively reduce the temperature in the house.
7. Add grease. The consumption of summer chickens is reduced, so the allocation of energy feeds should be reduced, generally between 5% and 10%. Can use animal and vegetable oils instead of energy feeds, plus feed 1% to 2% of fats and fats, due to the amount of heat dissipated by the digestive fat is less than the amount of energy dissipated by the digestive energy feed.
8. Appropriately increase protein feed. In summer, as the feed intake of the chicken is reduced, the intake of protein is insufficient, which directly affects the formation of eggs. Therefore, in order to meet the needs of the laying hens for various amino acids, the protein level in the diet can be increased by 1% to 2%.
9. Appropriate increase in calcium. Calcium is the main component of the formation of eggshells, and the calcium content of the diet should be kept as low as 3.5%.
10. Add vitamin C. Chickens in heat stress need a lot of vitamin C to dissipate heat, and the high temperature also reduces the ability of the chicken to synthesize vitamin C. Adding vitamin C to feed can reduce death, increase egg production, and the amount can be adjusted to normal. 2 times the amount.
11. Add sodium bicarbonate. Sodium bicarbonate has the effect of cooling the sun, which can increase the production of laying hens and increase the quality of the shells. It is beneficial to add 0.2% to 0.3% of sodium bicarbonate to feed.
12. Add green feed. Green feed has good palatability, is rich in vitamins, can increase feed intake of laying hens, and is good for heatstroke. It can add about 50 grams per day in the diet, such as fresh watermelon rind, bitter leeks, and melons. Wait.
13. Supply fresh cold water. Keep a clean, cool and sanitary drinking water in the sink throughout the day. It is best to use deep well water and keep it flowing. If necessary, add ice cubes to the water to reduce the water temperature.
14. Adjust the feeding time. The feed is now ready for use. Feed it as much as possible during the cool days of the 1st, from 4:00 to 5:00 in the morning, from 10:00 to 11:00 in the morning and from 6:00 to 7:00 in the evening, after turning on the light in the morning and evening. Each time before turning off the lights, they will be fed one more time.
15. Disinfect chicken. Can be combined with spray water cooling to carry chicken spray disinfection. 2 to 3 times a week with chicken disinfection, can choose to use high-efficiency and low toxicity drugs such as 100 poisoning, peracetic acid and so on. At the same time do a good job house flies, mosquitoes, pest control work.
16. Timely excrement. There are clearing machines for cleaning twice a day, and artificial cleaning for cleaning once a day. The flat-raising people must change their litters frequently, often disinfect them, and keep them clean inside and out.
17. Strengthen the observation of chickens. Observe the feed intake, drinking water and defecation of the chickens at any time, take measures as soon as they are found to be abnormal, and eliminate the poor quality chickens in time to reduce the spread of disease and economic losses.
18. Keep the house as quiet as possible. Cleaning, quail eggs, feeding water, removing manure, disinfection and other actions should be light, to avoid noise interference, reduce the amount of chicken exercise and prevent frightening groups.
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