In all stages of laying hens' management, the peak of egg production peak changes greatly, and the chickens have undergone tremendous changes from the physiological state to the feeding and management methods. Factors such as chicken migration, production, feed changes, inactivated vaccines, artificial insemination, and other stress factors continue to emerge. Whether good reserve chickens can successfully reach the peak of egg production, and the feeding management at the early stage of egg production is particularly critical. According to the different characteristics of pre-laying chickens, it can be divided into several stages to focus on. At this stage, the flock is transferred from the reserve house to the house, and the cohort is the biggest stress factor in this feeding stage. The environment transition should be stable, and the chickens can adapt to changes in the environment in a short period of time and smoothly carry out pre-production physical reserves. Transient work, if the control is not good Stress is too large, often results in a decline in group quality of chickens after the transfer, weight loss, severe conditions and even the occurrence of disease, affecting the level of egg production. 1.1 Transfer preparation Before leaving the group, do a good job of sterilizing the vacant houses and ensure that the empty time (more than 15 days) cuts off the spread of pathogens from the top and bottom batches. For the diseased buildings, we should do a good job in disinfecting the empty houses, existing articles in the building and the surrounding environment. Prior to the transfer, equipment repairs, staffing, and use of anti-stress drugs should also be carried out. 1.2 Environmental Control Fully integrate the environmental control of laying hen house and rearing house after transfer, carefully understand the temperature, humidity, fan opening quantity, air intake area and other environmental parameters of the flock in the rearing house, and minimize the environmental difference before and after the transfer. Stress. In winter, special attention should be paid to the effect of humidity on the environment. Excessive humidity (greater than 40%) causes the wind-cold index to increase, and the chickens are cold and cool, and the resistance is reduced, which can easily induce conditional diseases. 1.3 Epidemic isolation hygiene In the prenatal reserve period, the antibody levels of the flock have not yet reached the highest peak. Due to stress factors such as colony and immunity, the resistance of the flock to chickens is easily affected by diseases (such as ND, IB, and H9). In the event of such a disease, it often results in delays in the start of production or the level of egg production required. Apart from doing a good job of daily feeding and management at this stage, it is also necessary to do a good job in the prevention and control of quarantine measures in this building to prevent the introduction of diseases. Keep the daily hygiene of the building clean and tidy, and do a good job of disinfecting chickens to maintain the stability of the breeding staff. Opening period (5% egg production - 80%) During pre-production period, chickens need to be replaced with pre- and post-harvest materials. At the same time, a large number of chickens are concentrated on production. The rate of egg production rises rapidly. The chickens have to withstand the tremendous stress brought about by the opening of production and maintain the relative environment and feeding management. Stabilization is particularly important, providing a reasonable lighting program based on the quality of chicken populations to ensure a steady increase in egg production. 2.1 refueling preparation When the chickens reach 5% of their eggs, they should change their prenatal feeds. Premature replacement of prey feeds will result in diarrhea. If they are replaced later, it will cause chickens to have insufficient nutrient reserves to affect laying. It is advisable to use no more than 10 days before the prenatal feed, and then replace it with the peak of egg production to provide adequate nutrition for high-yielding chickens. The pre-production material is the transition of peak material and parent material. It is unscientific to give up the use of pre-production materials and to directly transition from the parent material to the peak material. 2.2 Lighting Control According to the breeding standards to develop a scientific and reasonable light program, chicken group weight can not meet the feeding standards, when the uniformity is poor, it should be appropriate to delay the increase of light 1-2 weeks, the best choice for slow increase. Summer sunshine time is long, pay attention to the shading work of the coop, avoid the premature birth of chickens caused by light leakage at the window fan. Egg production peak (production rate 80% - 90% or more) When the chickens reach 80% of their eggs, they enter the peak period of egg production. Most chickens have already started production, and the growth rate of egg production begins to decrease. Egg breeder farms began to perform artificial insemination. Before the insemination work is carried out, adequate preparations should be made to avoid excessive stresses caused by improper artificial insemination operations, affecting the level of production of eggs in the flock, and severely reducing the production of eggs. Insemination preparations should do the following: 3.1 Staff Preparation Before insemination, the staffing work in the building should be well done, and the inseminator and the anal staff should be properly allocated and properly combined to ensure that each group of inseminent personnel can cooperate in understanding. 3.2 Equipment Preparation The managers should be equipped with all the equipment needed for sperm delivery operations, such as pipettes, coolers, mugs, thermometers, etc., pay attention to the cleansing and disinfecting work of the insemination equipment, and avoid the spread of diseases caused by the insemination equipment, conditional The farms are best changed every batch. 3.3 Chicken preparation The selection and training of breeding roosters should be done in advance. The roosters should be selected three times at different stages (at 6 weeks, 18 weeks, and 22 weeks respectively). The quality of the semen should be determined by the appearance of the selected roosters. The selected roosters should be selected. Only use 2-3 training sessions. 3.4 Drug Preparation 2.8 days before artificial insemination, the chickens should be administered preventively. The drugs should contain anti-stress and salpingitis-preventing ingredients to improve the resistance of the flock. Close attention should be paid to egg production changes within one week after the start of insemination. Occurrence of egg production delays, dead scouring increase, veterinarians should take timely measures to take measures.
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Prenatal reserve period (transition - egg production rate 5%)
The pre-laying period is a stage where the flock changes more intensively. As long as the manager does a good job of transfer, reloading, inseminating, etc., and prepares fully, it will surely ensure that the flock will reach the peak of egg production smoothly.
