How to raise can reduce the rate of eggshell breakage
512 Slice CT,Heart CT Scanner,CT Scanner Screening,Ge Cardiac CT Scanner MinFound Medical Systems Co., Ltd , https://www.minfoundmed.com
First, the ambient temperature With the increase of ambient temperature, chickens breathe faster, when it reaches 30-32 °C when there is heat stress, when breathing gas exhaled a lot of carbon dioxide, reducing the bicarbonate ions in the blood, causing calcium carbonate can not be fully deposited. Take heatstroke cooling measures at high temperatures, and add heat stress additives such as vitamin C 0.02-0.03%, sodium bicarbonate 0.30% and ammonium chloride 0.30% 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. Second, the daily management 1. Increase the number of collected eggs The number of eggs collected on a daily basis is too small, it is easy to cause mutual collision within the egg collection tank, and the breakage rate increases. Collected twice a day, the breakage rate is 5.0-5.5%; collecting three times a day can reduce the breakage rate to 0.75-1.00%. Large groups of laying hens collect at least 4-5 times a day. 2. Reduce the stimulation of stress and stress factors, such as noise, sudden bright light, vaccination, nocturnal rodent damage, strangers entering the house, sudden replacement of feed, etc. cause chicken stress response, thereby affecting the intestinal nutrient material Absorption and utilization, 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. Third, genetic performance Eggshell quality and genetic related. 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. Fourth, the design of the cage and the slope of the cage should be reasonable. If the cage is too small, the eggs are not easy to roll out or roll too slowly, and they are easily broken or broken by the chicken. If the cage is too big, the rolling is 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. V. Diseases and medications Many diseases can cause deterioration of eggshell quality, with soft shell 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 use of sulfonamides and furans (prohibited) during laying. It is advisable to use other antibiotics instead of sulfonamides in the treatment of diseases during the laying period. Laying chickens that drink too much disinfectant with bleach or other chlorine-containing disinfectants also affect eggshell quality. Therefore, when using chlorine-containing disinfectants to kill viruses and bacteria in the water, the available chlorine content should be 3-5 ppm.