Breeding technology of laying hens

1. 1.Create a suitable living environment for laying hens
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In order for laying hens to produce more eggs, it is necessary to try to create a suitable growth and laying environment for the chickens, and to adopt corresponding supporting feeding and management measures according to the changing rules of different seasons. In the high temperature and high humidity season in summer, it is necessary to pay attention to heatstroke prevention and cooling, strengthen the ventilation in the house, maintain a dry environment and sanitation, provide sufficient and clean drinking water to the chickens, and appropriately increase the feeding amount of vegetables to improve the feed intake of chickens . In winter, special attention should be paid to the cold protection and heat preservation of the chicken house and artificial supplementary light. The temperature in the house should be maintained above 13°C, with 15-16 hours of light, and the drinking water should be properly warmed up, and cold water should not be drunk.

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3. 2.Pay attention to saving feed
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The biggest expense of raising chickens is feed, which accounts for more than 70% of the entire cost of raising chickens. Improper feeding and management will inevitably cause a lot of waste of feed. The measures to reduce feed waste are: First, the installation height, depth, and length of the feed trough should be changed according to the age of the laying hens and the cage density, and the amount of feed added should not exceed 1/3 of the depth of the trough. It is necessary to feed less and more often, reduce the leftover food in the tank, and determine the daily feed amount according to the egg production rate. Generally, when the egg production rate is 50%-60%, the daily feeding amount of each chicken is about 95-100 grams, and the egg production rate is about 95-100 grams.

When the egg production rate is 60%-70%, the daily feeding amount is 105-110 grams. When the egg production rate is 70%, the daily feeding amount of the chicken is 115-120 grams. When the egg production rate reaches more than 80%, the feed is not limited. Feed ad libitum. Second, beak trimming. Because chickens have the habit of planing food, the beaks of chicks should be trimmed at the age of 7-9 days. At about 15 weeks of age, beak trimming is required for those with poor beak trimming. Third, timely eliminate chickens that do not produce laying hens or have poor laying performance. When the breeding is completed and transferred to the laying house, it should be eliminated once. Those who are stunted, too small, too fat, sick, or lack of energy should be eliminated. During the egg production process, brooding chickens, sick chickens, disabled chickens, and discontinued chickens should be eliminated at any time. In the late stage of egg production, the out-of-production chickens are mainly eliminated. Hens with bearded crowns, pale faces, and shrunken crowns should be eliminated immediately. Chickens that are found to be too fat or too lean should also be eliminated immediately.

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4. 3.Reasons for the decline in egg production

Environmental factors: changes in light program or light intensity: such as changing light color at any time, suddenly stopping light, shortening light time, weakening light intensity, irregular light time, long and short, early and late, light and stop, night Forgot to turn off lights etc. Severely insufficient ventilation, no ventilation for a long time, etc. The attack of natural bad weather: not prepared or prevented in advance, suddenly hit by heat wave, typhoon or cold current. Long-term water cut-off: Due to the failure of the water supply system or forgetting to turn on the switch, the water supply is insufficient or cut off for a long time.

Feed factors: Significant changes in feed ingredients or quality problems in the diet can cause changes in egg production. Such as sudden changes in the types of raw materials in the diet, uneven feed mixing, moldy feed, replacement of fish meal and yeast powder, high salt content, high addition of stone powder, replacement of cooked bean cakes with raw bean cakes, forgetting to add salt to the feed, etc. It reduces the feed intake of chickens and causes indigestion. The egg production rate is normal, and the weight of the chicken does not decrease, indicating that the amount of feed and the nutritional standard provided meet the physiological needs of the chicken, and there is no need to change the feed formula.