Recently, some readers called the newspaper “Cowage 110†to reflect that his family’s egg chickens recently produced white shell eggs.
The common cause of white shell eggs in laying hens is: (1) Genetic factors. The laying hens may themselves be white shell laying hen breeds. The white shell laying hen breeds include Jingbai 904, Jingbai 823, Jingbai 938, Binbai 42, Binbai 584, Xingza 288, Hessex White, and Babu Ke Gram B-300, Nick White Chicken, Roman White, Hyland W-36, Decca White, etc. (2) The disease causes egg pathological whitishness. Such as hens, infectious laryngotracheitis, atypical Newcastle disease, egg drop syndrome, infectious bronchitis. (3) The lack of calcium and other mineral elements in feed and vitamins. Generally, shell powder and stone powder should be added to the feed 2 weeks before the layer is opened. (4) Caused by stress factors. Changes such as just switching to groups, being frightened, and sudden changes in feed, etc., may cause the laying hens to temporarily produce white shell eggs. After the elimination of stress factors, the flock will recover. (5) Ageing of hens. For hens that spend too much time in culture, there is less pigment deposition in the uterus. After the peak of egg production, the hens are aging. The supply of pigment in the uterus is not easy to form white shell eggs. If the hens produce white shell eggs at a high rate, they should be timely. Eliminating the hen.
Lu Tingbao, from the Veterinary Medicine Instrument Service Station in Donggang District, Rizhao City, Shandong Province, said that in addition to the above-mentioned several common causes, other reasons can also cause egg-laying in laying hens. Body heat is difficult, because the chicken through the respiratory system for heat, frequent breathing, so that the concentration of bicarbonate ions in the blood to reduce, thus affecting the formation of calcium carbonate in the uterus gland, affecting the eggshell quality leading to the production of white shell eggs. The facility management of chicken coops should be strengthened. Keeping chicken houses cool in winter and cool in summer and creating an excellent egg production environment for chickens are the primary conditions for avoiding the occurrence of seasonal white shell eggs. Second, drug white shell eggs, high temperature and high humidity season, the chicken prone to some bacterial diseases, the improper use of sulfa drugs in the treatment of the disease may cause the production of white shell eggs, sulfa drugs can inhibit the chicken body carbonic acid The activity of the anhydride enzyme and the synthesis of normal eggshell pigments fade the color of the eggshell. Care should be taken when using sulfa drugs to avoid long-term use or excessive usage. Third, light white shell eggs, laying eggs need to provide adequate light, lay eggs daily illumination time should be maintained at 14-16 hours, light time is not fixed or insufficient light will cause the hens produce white shell eggs.
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