How much do you know about scientific brooding?

1. Scientific feeding management is the key. First, do a good job of brooding and cultivate high-quality and robust chicks. According to a large number of studies at home and abroad in recent years, there is a strong positive correlation between the body weight of chicks and the main performance indicators during the laying period. Therefore, high temperature brooding must be used during the brooding period. That is, 33°C for 1-2 days; 32°C for 3-4 days; 30°C for 5-7 days; 28°C for 8-14 days; then drop 3°C every week until 21°C. Secondly, it is necessary to supply high-quality full-price feed to ensure the light time, 1-2 days old. 24 hours; 3-4 days 22 hours; 5-7 days 20 hours; 8-10 days 18 hours; 11-14 days 16 hours; 15-21 days 15 hours; after 21 days, gradually keep 8-12 hours.

Also pay attention to ventilation. Beak trimming was performed at 8-9 days of age. Immunization and drug administration are carried out according to the hygienic and epidemic prevention procedures.

Second, during the breeding period, we should focus on weight control and improve the uniformity of the flock. Studies have confirmed that the uniformity of 16-week-old is positively correlated with the persistence and survival rate of egg laying. During the brooding period, due to the supply of high-quality full-price feed, the chicks are fully developed and their weight is relatively large. Entering the breeding period, it is necessary to limit the feeding, control the body weight within the range specified by the feeding standard, and increase the uniformity of the flock to more than 85%.

Third, during the laying period, it is necessary to provide a stable production environment and prevent chickens from becoming overweight. Overweight chickens will cause a large amount of fat to invade the gonads, affecting the development of follicles and the secretory function of other gonads, which will lead to a decrease in egg production. Overweight chickens can also lead to fatty liver, causing increased mortality in the flock. For this reason, regular weighing should also be carried out during the laying period to determine whether the body weight of the chicken is normal.

Laying hens are particularly sensitive to various external stress factors. Once stimulated, a stress response will occur, resulting in physiological dysfunction, a decline in egg production, and an increase in mortality. Therefore, relocation, feed changes, and strong winds must be minimized as much as possible. . The impact of severe cold and heat, poor ventilation, sudden changes in light, vaccination, personnel exchanges, and vehicle noise on chickens will provide chickens with a quiet, comfortable and stable environment, so that chickens can maximize their production potential.

2. Scientific lighting management. A good lighting program can promote laying hens to produce more eggs, increase egg weight, and improve the survival rate and economic benefits of raising chickens. Appropriate light management is; 1-2 days old are given 24 hours of light to facilitate feeding, and then gradually change to constant light or natural light. After entering the breeding period, the natural light is mainly used, and the constant light can be sealed and shaded for 8-12 hours if conditions permit. At least 13 hours of light stimulation was given at 18 weeks of age, and then increased by 15-30 minutes every week or two weeks to 17 hours. If the light time increases too fast, it will cause adverse phenomena such as prolapse of the anus and pecking of the anus. The light intensity of the laying hen house is generally controlled at 10-20 lux, and the light time and intensity cannot be reduced during the laying period.

3. create a suitable living environment for laying hens. In order to make laying hens produce more eggs, it is necessary to create a suitable growth and egg-laying environment for the chickens as much as possible, and to take corresponding supporting feeding and management measures according to the changing laws of different seasons. In the high temperature and high humidity season in summer, attention should be paid to preventing heatstroke and cooling, strengthening ventilation in the house, maintaining a dry environment, providing sufficient and clean drinking water to the chickens, and appropriately increasing the amount of green vegetables to improve the feeding ability of the chickens. .

In winter, special attention should be paid to the cold protection and heat preservation of the chicken house and artificial supplementary lighting. The temperature in the house should be maintained above 13°C, the light should be 15-16 hours, and the drinking water should be properly warmed, and no cold water should be drunk.

3. the feeding links are fastened tightly, and attention should be paid to saving feed. The biggest expense of raising chickens is feed, which accounts for more than 70% of the total cost of raising chickens. Improper feeding and management will inevitably lead to a large amount of waste of feed. According to the author's investigation and chicken production practice, about 5%-6% are wasted due to excessive feed addition, about 10%-12% are wasted due to unscientific design and installation of feeding troughs, and about 10%-12% are wasted by rats, finches and insects. 7%, and chicken feed loss accounts for about 5%.

The measures to reduce feed waste are: First, the installation height, depth and length of the feed trough should be changed according to the different weeks of age and cage density of laying hens, and the amount of feed added should not exceed 1/3 of the depth of the trough. It is necessary to feed less frequently, reduce the leftover food in the tank, and determine the daily feed amount based on the egg production rate. Generally, when the egg production rate is 50%-60%, the daily feeding amount of each chicken is about 95-100 grams, and the egg production rate is about 95-100 grams. When the egg production rate is 60%-70%, the daily feeding amount is 105-110 grams, when the egg production rate is 70%, the daily feeding amount of the chicken is 115-120 grams, and when the egg production rate reaches over 80%, the feed is not limited, let the chickens Eat ad libitum.

The second is to cut the beak. Because chickens have the habit of slicing, therefore, the chicks should be cut off their beaks at 7-9 days of age. At around 15 weeks of age, beak trimming is required for those with poor beak trimming. Thirdly, promptly eliminate non-laying hens or chickens with poor egg-laying performance.

At the end of breeding, when it is transferred to the laying house, a culling should be carried out. Anyone who is stunted, too small, too fat, sick, or lethargic.