High death rate affects the benefit of raising hens how to reduce the death rate of laying hens

The high death rate of laying hens during the laying period has plagued many chicken farms. In China, the death rate of commercial laying hens during the laying period is about 10%, and those with poor feeding conditions can reach more than 20%, seriously affecting the efficiency of raising hens. The high death rate is affected by many factors, so comprehensive measures should be taken to prevent and cure it.

Laying hens

Strict disinfection: the henhouse is washed with a high-pressure water gun, the walls are painted with quicklime, the laying cages are disinfected with a flame sterilizer, the utensils, equipment, and the floor are disinfected with 2%-3% caustic soda, and then the henhouse is closed, fumigated with formalin, left vacant for about one month, and the day before the new chicken is caged, disinfect it with Baidu spray.

Chicken selection: before caging, chickens must be selected to ensure the health, neatness and symmetry of caged laying hens, usually based on body weight and shank length. Those who are too big and too small, sick, disabled and thin, should be resolutely eliminated, or raised separately according to the situation.

Scientific ingredients: according to the feeding standard, laying hens should appropriately increase the levels of crude protein and essential amino acids in feed from 120 days old, so as to meet the needs of body and sexual maturity of laying hens, and prevent prolapse of anus and fatigue after the opening of production. At the same time, vitamin AD3, vitamin C and vitamin E should be doubled in the diet to enhance the metabolic level and anti-stress ability of laying hens.

Such as accelerated replenishment or compound multi-dimensional in drinking water, the effect is more ideal. General small-scale chicken farmers had better not self-ingredient, can choose good reputation, large-scale feed factory production of laying hen feed, the effect is better, can avoid some nutritional metabolic diseases, reduce mortality.

Timely calcium supplement: laying hens from the age of 4 months or up to 5% laying rate should be fed a diet high in calcium (3.3%-3.5%). Supplement calcium to chickens at 12: 00, 12: 00, 20: 00 a day, which helps to absorb calcium. The eggshell strength was the best among the calcium source feeds in which shell accounted for 2 beat 3 and limestone 1 stroke 3 in diet. Of course, the best source of calcium is the eggshell sterilized at high temperature.

Adequate drinking water: layers should be provided with adequate clean water at all times, as the consequences of lack of water are often more serious than that of lack of food. In summer, we should pay attention to drinking deep well water, when the temperature is more than 35 ℃, ice can be added to the water; in winter, we should pay attention to drinking warm water to prevent the low water temperature from bringing stress to chickens.

Reduce stress: before new chickens are caged, multivitamin should be added and antibiotics should be used properly to reduce the adverse effects of switching stress on laying hens. Seal the doors and windows of the henhouse to prevent small animals from entering the henhouse; seal the exhaust vents with barbed wire to prevent birds from entering. In order to reduce stress, refueling should be carried out gradually.