The rearing and management techniques for laying hens from the expected date of production to the peak of egg production
October 15 05:00:07, 2024
Laying hens enter the due date from the age of 16 weeks and reach the peak of egg production at the age of 25 weeks. The status of feeding and management in this period is in line with the requirements of chicken growth and egg production, and has a great influence on the egg production during the entire laying period. . First, the characteristics of physiological changes during this period: 1. Broiler chickens from the age of 18 weeks into the egg-laying chicken house weight increased rapidly, the reproductive system also developed rapidly. The follicles on the ovary grow rapidly in large numbers, and the fallopian tubes also quickly grow thicker and longer and increase in weight. Weight gain and reproductive system growth occur simultaneously. At this time, some chickens started to lay eggs. The egg production rate of the developed chickens reached 5% at 20 weeks of age, 50% at 22 weeks of age, and 80% at 24 weeks of age. Therefore, various nutrients in feed for chickens during this period Both environmental conditions and external conditions are very strict. 2. After the laying hens enter the pre-production period, great physiological changes have taken place in the chicken's body. Whether physically or mentally, they are in a state of physiological stress, coupled with the effects of colony, immunity, and deworming, and body resistance. Obviously decreased force, prone to various diseases. Second, the feeding and management measures during this period: 1 timely transfer group, timely vaccination, deworming layer chickens into the cage work best completed before 18 weeks of age, so that the chicken as soon as possible to familiarize the environment. Too late to make part of the chicken has been discontinued production, or make the yolk fall into the abdominal cavity caused by yolk peritonitis. In the cage or cage before the vaccination should be vaccinated or Newcastle disease oil seedlings or systemic seedlings, eggs, integrated malaria vaccine and other vaccines. After entering the cage, it is best to conduct a thorough deworming work. The body parasites such as ticks and cockroaches can be sprayed with drugs. The internal parasites can be administered with albinoimidazole 20-30 mg/kg body weight, or with a Ding (wormbusting) in the mix. Trans-group, before and after inoculation should add a variety of vitamins, antibiotics to reduce stress response. 2. Timely conversion of egg production In order to adapt to the increase in chicken body weight, growth of the reproductive system and the need for calcium, it is possible to start laying eggs at the age of 18 weeks, and from the 20th week onwards to the peak of the production. At the same time, an additional amount of multivitamins was added to the material. During this period, the method of restricting feeding should be cancelled so that chickens can freely feed. There is always material in the tank during lamp ON. 3. Increase the light time The rural professional chickens adopt natural light in the breeding period. At the age of 18 weeks, if the chicken population reaches the standard, the light may be increased for 30 minutes every 2 weeks until the total number of light reaches 15 or 16 hours per day. If the chicken population is lighter and has a slower growth, it may be delayed by 20 weeks of age, while increasing the feed. The principle of lighting during the production of eggs is that the time cannot be shortened and the intensity cannot be reduced. 4. To create a comfortable environment for chickens. The most suitable temperature for laying hens is 13°C～23°C. In winter, it is best to keep at 10°C or above. In summer, it is better to keep below 30°C. Maintain indoor air circulation and prevent various noises. Keep the environment and feeding, drinking, lighting and other stability. 5. Do a good job in epidemic prevention and control (1) Add antibiotics such as norfloxacin, ciprofloxacin, and gentamicin to the feed or drinking water after entering the cage. Dosage is to be taken every 4 to 5 weeks for the prevention of large intestine. Bacillus disease, salmonellosis, enteritis, etc. (2) Add an additional amount of multivitamins to the chicken in order to adapt to the chicken's egg production needs and reduce various stress responses, and increase the resistance to various diseases. (3) Strengthen health management, implement reasonable immunization procedures, adhere to the chicken disinfection and environmental disinfection system, and prevent the introduction of the disease. Pay close attention to whether the rising rate of egg production complies with the standards and pay close attention to any minor effects of the external environment on the flock.