With the increasing demands on people's quality of life, our breeding industry has also changed along with the changes of the times. People now have different requirements, and our production has to change with the requirements. People are now demanding less for poultry and eggs than they used to be. The demand is fresh, safe and cheap. The first thing people need now is food that is safe, beautiful, and stable in quality, and then consider the price issue. So briefly introduce some common sense to reduce eggshell breakage.
Ambient temperature As the temperature of the environment increases, chickens breathe faster, and when they reach 30°C to 32°C, they experience heat stress. When they breathe, they exhale large amounts of carbon dioxide, reducing bicarbonate ions in the blood, causing calcium carbonate to be insufficiently deposited. Take heatstroke cooling measures at high temperatures, and add heat stress additives such as vitamin C, 0.30% sodium bicarbonate and 0.30% ammonium chloride in the feed. According to reports, using sodium carbonate instead of dietary sodium chloride in the hot season can increase the egg production rate by 2%, and the breakage rate is significantly reduced. Daily management
Increase the number of collected eggs The number of eggs collected on a daily basis is too small, and it is easy to cause mutual collisions in the egg collection tanks, and the breakage rate increases. A large group of laying hens collects at least 2 or 3 eggs each day.
Stimuli that reduce stress and stress factors, such as noise, sudden bright light, vaccination, nocturnal rodents, strangers entering the house, sudden replacement of feed, etc., cause stress responses in chickens, thereby affecting the intestinal absorption and utilization of nutrients. , Shorten the residence time of eggs in the uterus or cause endocrine disorders, so that the eggshell can not be formed properly, there are misshapen eggs, shell eggs, soft shell eggs and shellless eggs. Minimize or avoid stress in daily management. The replacement of feeds should be carried out gradually, the staff should not change them frequently, and should be responsible and scientific in feeding management.
Genetic properties Eggshell quality is related to heredity. Under the same husbandry and management conditions, hens with good genetic performance can use calcium better than genetically poor ones, making the eggshell thicker. Brown shell eggs generally have higher egg shell strength than white shell eggs. Therefore, in order to improve the quality of egg shells, we must pay attention to the choice of chicken breeds.
The design of the cage and the slope of the cage should be reasonable. When it is too small, the eggs are not easy to roll out or roll too slowly, and they are easily broken or broken by chickens. If they are too large, the rolls are too fast and easy to break. For larger slopes, a certain amount of cushioning material can be installed in the egg collecting tank. The bottom net of the cage should have a certain degree of elasticity, and iron wire should be used to connect the egg nets at the joints of the two cages to prevent the eggs from falling out.
Diseases and medications Many diseases can cause deterioration of eggshell quality, with soft-shelled eggs, thin-shelled eggs, or even shellless eggs. Such as atypical Newcastle disease, infectious bronchitis, egg drop syndrome, chronic gastrointestinal diseases, bird flu, reproductive tract infection, oophoritis.
Special attention should be paid to the fact that laying hens are prohibited from using sulfonamides and furans. It is advisable to use other antibiotics instead of sulfonamides in the treatment of diseases during the production of eggs. Laying chickens drinking water containing disinfectant bleach or other disinfectants containing chlorine also affect egg shell quality. Therefore, when chlorine-containing disinfectants are used to kill viruses and bacteria in water, the available chlorine content should be guaranteed.
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