Calcium supplementation time Continuous laying hens do not need calcium supplementation. By 2 pm, as the egg shell deposition rate increases, the amount of calcium required for chickens also increases. Therefore, in order to make laying hens produce more eggs and produce better eggs, it is best to feed calcium hens with supplemental calcium at 2 to 6 pm every day. In the afternoon, large-grained calcium carbonate can also be freely fed to laying hens and partially recharged at night.
Strengthen Management 1. Pay attention to letting the laying hens enjoy more sun and exercise to promote the absorption of vitamin D. Second, pay attention to the ratio of calcium and phosphorus feed to keep it in the 4:1 equilibrium. Third, add the right amount of vitamin C, in order to improve the composition of the egg shell and improve the hardness of the eggshell, with 50 mg per kilogram of feed is appropriate. Fourth, vitamin D supplementation. Vitamin D can promote the absorption of calcium in the small intestine, and can promote the normal calcification of bone marrow, which is conducive to the improvement of eggshell quality and egg production rate. Egg-laying chickens should contain vitamin D500 international units per kilogram of feed. When the content is insufficient, cod liver oil or synthetic products should be added. Fifth, maintaining appropriate breeding density and temperature, reducing stress, can not only improve the quality of eggshell, but also ensure high and stable production of chickens, increase feeding efficiency.
Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids, and gases from water. The goal is to produce water fit for specific purposes. Most water is purified and disinfected for human consumption (drinking water), but water purification may also be carried out for a variety of other purposes, including medical, pharmacological, chemical, and industrial applications. The methods used include physical processes such as filtration, sedimentation, and distillation; biological processes such as slow sand filters or biologically active carbon; chemical processes such as flocculation and chlorination; and the use of electromagnetic radiation such as ultraviolet light.
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