Feeding management of first-laying hens
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. Feeding management during this period has a great influence on egg production. We're well-known as one of the leading Sport nutrition raw material manufacturers and suppliers for our quality products and good service. Please feel free to buy or wholesale bulk garcinia cambogia extract, Senna Leaf Extract Powder, Nuciferine Lotus Leaf Extract Powder, BHB and African Mango extract for sale at the best price from our factory. Nutrition Health Care Ingredients,Losing Weight Sport Ingredients,Sport Health Care Ingredients,Sport Nutrition Xi'an Natural Field Bio-Technique Co., Ltd. , https://www.naturalnf.com
First, the characteristics of physiological changes
Laying hens enter the laying sheds from around 18 weeks of age, the chickens gain weight rapidly, the reproductive system develops rapidly, the follicles grow rapidly, and the fallopian tubes quickly become thicker and longer. At this time, some chickens began to lay eggs. The egg production rate of developed chickens reached 5% at 20 weeks of age, 50% at 22 weeks of age, and 80% at 24 weeks of age.
Second, feeding and management
1. Timely transfer group, timely inoculation, deworming
Laying hens should be basketed before 18 weeks of age in order to familiarize the chicken with the environment as soon as possible. Too late to make part of the chicken has been discontinued production or the yolk into the abdominal cavity caused by yolk peritonitis. Before being basketed or caged, new city vaccines, egg drop syndrome vaccines and other vaccines should be vaccinated. After entering the cage, it is best to conduct a thorough deworming to repel body surface parasites such as cockroaches, cockroaches, etc.; for internal parasites, amimorphazole 20-30 mg/kg body weight or afudin can be taken orally. (Bug-Buster) taking ingredients. Before and after the transfer and inoculation, a variety of Vitamins and antibiotics should be added to the feed to reduce the stress response.
2 timely conversion of egg production
In order to meet the weight requirements of the chicken and the reproductive system, it is possible to start laying eggs at the age of 18 weeks and to raise the peak at the age of 20 weeks. At the same time add more 20% -30% of multivitamins in the feed. Eat freely, always have feed in the feeding trough during light turn on.
3. Increase the lighting time
Most chicken farms use natural light during the breeding period. At the age of 18 weeks, if the population of chickens reaches the standard, the light can be increased by 10 minutes per day, and the total number of light reaches 15-16 hours per day at the peak of the egg production. Light duration during egg production cannot be shortened and the intensity cannot be reduced.
4. Create a comfortable environment
The most suitable temperature during the egg production of chickens is l3°C-23°C, and it stays above 10°C in winter and below 30°C in summer. Maintain indoor air circulation, prevent all kinds of noise interference, and maintain the stability of feeding, drinking water, lighting, and environment.
5. Do a good job of preventing diseases
Strengthen health management, adhere to the chicken disinfection and environmental disinfection system to prevent the introduction of the disease.
Third, the initial production of layered diarrhea and prevention and treatment
The watery diarrhea in the first layer of laying hens is a problem often encountered in laying hens. Water-like diarrhea occurs in chickens as soon as they start production, some lasting 1-2 weeks, and some lasting 1-2 months or even longer. There are many causes of watery diarrhea, such as bacteria, viruses, parasites, poisoning, etc., but diarrhea in chickens that are initially produced is often caused by non-pathogenic factors.
1. Main symptoms: 1 The laying hens have started to pull water excrement, the solid content of the excrement is small, a lot of water is mixed with some undigested feed, and when the hens get close to the chicken, they can hear the “dumpling†drainage. Sound; hens around the anal hen's feathers are damp, and the color of the feces is relatively normal. 2 The broiler's spirit and feed intake were basically normal, drinking water increased, eggshell color was normal, but the rate of egg production rose slowly and the chickens did not die. When the egg production rate reached 80%, diarrhea often stopped naturally. 3 During diarrhea, drug therapy was ineffective or temporarily effective, and relapsed after drug withdrawal.
2.Cause analysis: 1 The initial metabolism of laying hens, physiological changes, coupled with community, environmental changes, etc. on the chicken body caused great stress; while most of the nutrients supply eggs, body immunity and autologous As a result, the regulatory function is reduced, resulting in a decrease in digestive function; in addition to the replacement of the initial egg production, the digestive tract is temporarily unable to adapt and causes diarrhea. 2In the early stage, the mineral content in the material is very high. A large amount of calcium, phosphorus, zinc, and sodium ions accumulate in the intestine, causing the osmotic pressure in the intestine to increase. This largely prevents the intestinal absorption of water, and the feed The high content of stone powder and shell powder mechanically stimulates the intestinal wall to accelerate intestinal peristalsis and cause diarrhea. 3 In the later stage of breeding, the amount of rice bran or bran added is higher, or the concentration of secondary powder used in the concentrates and premixes is higher, and the crude fiber content in the feed is higher, so that the peristalsis of the intestines is accelerated and diarrhea is caused. 4 The initial protein content of laying hens is high, or the content of mixed chop added is high, and raw soybean meal can stimulate the gut and cause diarrhea. 5 Many farmers and veterinarians mistakenly diagnose this type of diarrhea as pathogenic diarrhea and use a large number of antibiotics. A large number of long-term use of antibiotics can cause disorders in the intestinal flora and dysfunction of the intestines, and increase the symptoms of diarrhea.
3. Control: 1 In the later stage of breeding, the content of crude fiber in feed should be controlled within a reasonable range, calcium content can not be added too high, with 0.6%-0.8% as appropriate; at the same time, the quality of feed should be guaranteed to prevent mold change. 2 Feeding should be carried out during the refueling of the chickens, usually within 5-7 days in order to prevent irritation to the intestinal tract caused by excessive stone powder and protein feed in the feed. 3 Add 10 grams of sodium humate per kilogram of feed, you can also add probiotics, all have better control effect. 4 Chickens suffering from intractable E. coli, Salmonella, and viral enteritis can also cause watery diarrhea. They can be fed with florfenicol plus anti-viral medicine. If they are fed for 5 days, they can be improved.