Several point for attention in improving lay rate of laying hens

How to do a good job in prenatal and postnatal care of laying hens: Laying hens breeding technology Rural chicken farmers are limited by the scientific level and breeding information, and often ignore the prenatal and postnatal care of laying hens, which has a negative impact on the production performance of laying hens during the peak laying period. In fact, the nursing work of laying hens before and after production is a powerful guarantee for high and stable yield of chickens. Here is a detailed introduction to what should be paid attention to during the peak laying period of laying hens, and how to do a good job in prenatal and postnatal care of laying hens. What should layers pay attention to during the peak laying period? 1. The goal of this stage before laying eggs is to reduce all kinds of stress, so that chickens can produce smoothly and enter the peak period of laying eggs quickly. 1. The period from the first laying of eggs to the 6th or 7th week of laying period is the rising period of laying. The egg laying was abnormal in the first two weeks, which was characterized by long egg laying interval, double yellow eggs, soft-shell eggs, abnormal eggs and small eggs. When the egg laying rate rises, it rises rapidly every week and increases exponentially, that is, 5%, 10%, 20%, 40% and 80%. The heavier the egg, the faster the weight gain, and the more mature it is physically. 2. Pay attention to the following points before laying eggs: (1) Give a peaceful and stable living environment; (2) To meet the nutritional needs of chickens and increase the calcium content in feed from 2% at 18 weeks to 3.5% in time; (3) After opening chickens, the weight of chickens should increase synchronously with the laying rate to maintain long-term high yield. If the weight of chickens grows slowly or stops growing or even drops, the egg production rate will stop rising or falling, so we should pay attention to the changes of chicken population weight, egg production rate and egg weight. Pay attention not to change the peak materials of laying eggs before 50 weeks old, seriously implement the lighting system, and do not arbitrarily reduce the lighting time and intensity; (4) Newborn flocks, flocks with an egg laying rate of 50% and flocks with a peak. Because the egg rotates downward in the fallopian tube after delivery, it is easy to cause salpingitis, so drugs should be used in the above three stages to prevent salpingitis; (5) The optimum house temperature for laying hens is 20-25, and generally it is controlled in the range of 4-30, which has little effect on laying performance; (6) During the rising period of laying eggs, it is forbidden to change feed or vaccinate, so as not to cause strong stress reaction. Second, the peak period of laying eggs starts from the seventh week and ends at the17th week. Laying hens enter the peak period of laying eggs, and the laying rate is about 90%. The length of the stable period of the peak laying period varies with the variety and the level of feeding management, ranging from less than 65,438+00 weeks to about 65,438+04 weeks. At this stage, the weight of chickens and eggs increased slightly. Problems that should be paid attention to during the peak laying period: 1. Chickens in the peak period of laying eggs can add 1-2% oil to the feed when conditions permit, and drink the electrolytic multivitamin every 10- 15 days, which has a good effect on strengthening the physique of chickens and improving the laying rate and egg weight. 2, avoid all kinds of stress factors, old after 200 days. According to the local immune habits, drink the strain once every 1-2 months to supplement the regularity of antibodies. 3. Provide a good, clean environment and high-quality feed to ensure the best production potential of the chickens and create higher benefits. Third, the late laying period is 18 to 52 weeks. After the egg laying peak, the weekly egg laying rate decreased by 0.5- 1%, and decreased to 65-70% by the 52nd week. At this stage, the body weight and egg weight increased slightly. The problems that should be paid attention to in the later period of laying eggs: 1, to ensure that chickens can slowly reduce the laying rate and prolong the economic life as much as possible; 2. Control the weight gain of chickens, prevent the influence of overweight on laying eggs, and save feed costs; 3. Eliminate sick chickens and low-yield chickens in time to reduce feed waste. Supplementing the supply of calcium source in feed can improve the calcium absorption rate of chickens and reduce the breakage rate of eggs; After 4.3-4 weeks, the laying rate is lower than 80%, and the late feed of laying hens is changed and the method of gradual transition is adopted. How to do a good job in prenatal and postpartum health care of laying hens First, do a good job in insect repellent and epidemic prevention. Before laying eggs, laying hens should do a good job of epidemic prevention. The epidemic prevention time should be separated from different vaccines, and the immunization time should be arranged reasonably. Insect repellent work is generally arranged at about 1 10 days old. Second, ensure the uniformity of the sheep. Before the start of the flock, the weak chickens should be arrested and fed separately to ensure the uniformity of the flock, and special care should be taken for the weak chickens. If they are too weak, they will be eliminated directly. Third, the maintenance of the chicken cage Before the chicken enters the cage, it should be carefully inspected and thoroughly disinfected, and the damaged or deformed parts should be repaired in time to prevent the eggs from being damaged due to the broken chicken cage. Fourth, diet adjustment. Around the age of laying hens 1 10, if the chickens meet the standards, the feed can be adjusted and changed in time to meet the needs of laying hens. Specific practice: you can feed the paving directly (don't add shell powder first), and then feed the full-price paving when the paving rate reaches 5%. 5. Increase the illumination With the opening of the flocks, the illumination time should be gradually lengthened. When the flocks reach the peak of laying eggs, the illumination reaches 65,438+07 hours. Sixth, avoid causing stress. Newborn laying hens are hyperactive and neurotic, and should try to avoid disturbing the chickens and avoiding stress. The above are the matters that should be paid attention to during the peak period of laying hens, and how to do a good job in prenatal and postpartum care of laying hens. I hope this article is helpful to everyone. Many farmers think that everything will be fine after laying eggs, ignoring the feeding management and disease prevention during the laying period, resulting in great economic losses. Therefore, chickens in the laying period should do a good job in daily feeding management.