Four things to pay attention to when raising laying hens in autumn
In the autumn, there is a big contrast with the hot summer. Therefore, layer breeding should also be adjusted accordingly to ensure the healthy growth of layer hens and continue to maintain good egg production performance. There are many things to pay attention to when raising layer hens in autumn. Today, I will focus on four things, so chicken farmers should not neglect.
1. Adjust the feed for laying hens
In autumn, in order to adapt layer breeding to the changing seasons and use feed more reasonably and efficiently, the following adjustments should be made:
1. The supply of protein feed can be appropriately reduced
Due to the high temperature in summer, the feed intake of chickens will be significantly reduced due to heat stress. If the diet does not increase the nutrients, it will not be able to meet the needs of laying hens for growth and egg production due to the reduction of feed intake. Therefore, the protein content of the summer diet should be 1%-2% higher than other seasons. At the end of summer, when autumn arrives, it should be re-adjusted to reduce the increased protein level by 1%-2%. On the one hand, it can save feed costs, on the other hand, it can improve the utilization rate of protein feed and reduce environmental pollution.
2. Add enough mineral feed
Since autumn, most laying hens are still in the peak period of laying eggs, and the chickens need more calcium, so the calcium and phosphorus ratio in the diet should be appropriate, and the calcium content in the general compound feed should reach 3.5%-4% . Too much or too little calcium in the compound feed will affect the palatability of the layer feed and the egg production rate of the flock. In order to increase the intake of calcium without affecting the palatability of the feed, the shell powder can be separated from the feed and fed in a single trough to allow the chickens to eat freely to meet the needs.
3. Appropriately reduce anti-heat stress additives
Since laying hens are prone to heat stress in summer, some anti-heat stress drugs, such as VC, baking soda, etc., are generally added to layer feed to reduce the impact of high temperature on laying hens. As the autumn turns cooler, the use of anti-heat stress additives can be reduced or eliminated.
4. Appropriately increase energy feed
Because it turns cooler in autumn, chickens need more energy to maintain their own body temperature than in hot seasons. Therefore, corn, sorghum and other high-energy concentrates should be appropriately added to the diet of laying hens, and the amount should generally reach 52%-60%.
2. High-yield supplement light
Light is the source of life for all things. Therefore, light is also an important factor that affects laying hens. After the fall, the light will gradually weaken, so pay attention to supplement. In the breeding of layer hens, reasonable supplement of light is an effective way of low consumption and high output, which can not only increase the egg production of layer hens, but also improve the egg quality. However, the following three points should be paid attention to when supplementing artificial light:
Feeding of laying hens: Three-stage light management of laying hens rearing
1. Reasonable light and color application
Different light colors and wavelengths have different effects on laying hens. Experiments have proved that under the same conditions of other breeding conditions, the egg production rate of hens raised under red light is significantly higher than that of hens under other colors of light, generally by about 20%.
2. The duration is stable and appropriate
Supplementary light for laying hens generally starts at 19 weeks of age, and the light duration should be from short to long, and it is advisable to increase it by half an hour per week. When the daily light time reaches 16 hours, the light should be kept stable, and the duration should not be short. The best way is to add light once a day in the morning and evening.
3. The light intensity is uniform and suitable
For normal laying hens, the required light intensity is generally 2.7 watts. In order to ensure sufficient illumination for the bottom of the multi-layer caged chicken house, the illumination should be increased during the design, generally 3.3 to 3.5 watts per square meter. Therefore, the bulbs installed in the chicken house should be 40-60 watts. Generally, the height of the lamp is 2 meters, and the distance between the lights is 3 meters. If more than two rows of light bulbs are installed in the chicken coop, they should be arranged crosswise. The distance between the light bulbs against the wall and the wall should be half of the distance between the bulbs. You should also pay attention to replace the broken bulbs at any time. Wipe the bulbs once a week to keep the house inside. Appropriate brightness.
Third, the regulation of the chicken house environment
Entering autumn, the temperature difference between day and night will increase, and attention should be paid to adjusting the temperature reasonably to minimize the impact on the hens due to sudden changes in the outside temperature. In late autumn, the temperature drops significantly. Open chicken coops must be well protected from cold and heat preservation. When the temperature is low, close the windows to prevent the invasion of cool wind. In addition, there is a lot of rain and humidity in autumn, and the air in the house is humid and dirty. Various pathogenic microorganisms are easy to grow and multiply, which can induce respiratory and intestinal infectious diseases. Ventilation should be carried out when the temperature is high at noon to prevent excessive humidity. Prevent feed mildew.
4. Eliminate low-yielding laying hens
The appearance of low-laying hens has two main characteristics: 1. The body is thick, the head is thick, and the individual is too fat. 2. Weak body, smaller head and lighter weight. The best time to eliminate these chickens is before the end of the rearing period before the laying cage.
Low-production layer hens moult early, stop production early, and take a long time to moult the main feathers. Only 1-2 eggs are replaced at a time. These chickens should be eliminated when the laying period is over and high-yielding chickens are planned to be retained.
In addition, the combs and meat beards of low-laying hens are rough and cold, and the abdomen lacks elasticity. The cloaca can hold 1 to 1.5 fingers, and it is tight and dry. The best time to eliminate these chickens is after the end of the high-yield period.
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