The temperature in autumn gradually decreases, the temperature difference between day and night is large, and the change between cold and warm is extremely irregular. Appropriate measures should be taken to strengthen the feeding and management of laying hens and prevention and control of epidemics so as to provide a comfortable production environment for layer hens, improve the physique of layer hens, and ensure that hens have high production performance. The fall management of laying hens should mainly do the following:
First, ventilation
The suitable temperature for laying hens is 13-25°C and the relative humidity is 50%-70%. Too high and too low will affect the chicken's production performance. In early autumn, the weather is relatively hot and there is more rain, and the house is relatively humid. Therefore, ventilation and ventilation should be strengthened. However, after entering the fall, the temperature gradually decreased, we must pay attention to the weather forecast, timely adjustment of the number of fans and the opening and closing time of the water curtain, timely adjustment of the area of ​​the air inlet to ensure that the wind speed is moderate, the temperature is appropriate.
Second, the temperature
During the autumn, the maximum temperature in the outside world can reach 30°C, and the lowest temperature in the night can reach 16°C-18°C. Therefore, the temperature in the house should be controlled. Especially after the Mid-Autumn Festival, the temperature drop is relatively obvious. At night, attention should be paid to the regulation of vents; when the temperature of the chicken house is lower than 15°C, vents or doors and windows should be closed at night, paying particular attention to the stress caused by sudden temperature changes.
Third, ensure nutrition
In hot summer, the intake of layer chickens is relatively low, and laying hens need to ensure that they have sufficient nutrition to form eggs, and the chicken body is in relative fatigue. With the fall of temperatures in the fall, the hens will resume their physical fitness as soon as possible, and their feed intake will gradually increase. At this time, feed nutrients should not be reduced and more animal protein feeds should be fed. At the same time, in order to promote the digestion of chickens, 15-20 grams of B vitamins are added per 100 kg of diet. In addition, the appropriate amount of vitamin C and vitamin E can increase the resistance of laying hens and reduce the influence of stress factors. If moulting is performed on laying hens, it is best to add 1%-2% gypsum powder to supplement sulphur and calcium in the feed.
Fourth, add lighting
The illumination of laying hens should be gradually extended and should not be gradually shortened. The light intensity should be gradually stronger and should not be weakened, nor should it be increased suddenly. The daily light time during the laying period is generally 14-16 hours. After entering the autumn, the natural light in the north becomes shorter and weaker. The lighting management of the house should be adjusted in time. Keep the lighting time and light intensity constant and the uniformity of light in order to avoid moulting the flock. Under normal circumstances, a 15-watt light bulb is installed in a chicken house of about 15 square meters, and the distance from the ground is 1.5-2 meters. Each morning and evening lighting for a period of time, together with the daylight hours, the daily light time is 14-16 hours. It is appropriate.
V. Observing the flock
Identify abnormal layer chickens in time, eliminate low-laying layer chickens, and observe whether the mental status, feed intake, drinking water, fecal form and color, egg production and egg laying time, and eggshell quality are changed every day; at the same time, according to crown and meat The color of the beak and legs of the chicken, and the timely elimination of low-yielding chickens. Under normal circumstances, high-yield chickens have strong blood circulation, crowns and meats are bright red, and low-yielding chickens have smaller and thinner crowns and meats because of atrophy and are pale and dry. High-yielding chickens are formed of yolk due to a large amount of yellow pigments in the body, so their mouths and legs become light yellow or white; low-yield chickens tend to use yellow pigments less frequently in the body, and their mouths and legs tend to exhibit yellow color. According to the clinical performance of laying hens, abnormal laying hens were found in time and low-rank laying hens were eliminated.
6. Prevention and control of epidemics
After entering the autumn, insects are relatively frequent and prone to white-crown disease and chicken pox. Therefore, weeds should be promptly removed and sterilized in order to ensure internal hygiene and regular feeding of some diseases that can prevent both diseases. Drugs such as chicken pox scattered. In addition, the detection of Newcastle disease and bird flu antibodies should be strengthened and immunization should be conducted in a timely manner. In addition, in the event of a sudden change in weather, such as wind and rain, some drugs can be added for prevention while strengthening the management of feeding.
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