Non-disease factors for egg laying in laying hens

In laying hens, there are many reasons for the drop in egg production. For example, certain infectious diseases, poor feeding and management, improper use of preventive drugs, and various environmental stresses can cause egg production to decline. The non-disease factors that cause egg production decline are briefly described below.

Feed Nutrition Factors

1. Poor feed quality. The use of inferior quality, adulterated raw materials, or moldy or deterioration due to raw materials may not achieve normal nutritional indicators or worsen the palatability of feeds, which may cause the feed intake of chickens to decline or cause diseases after use.

2. Feed preparation is irrational. Frequent replacement of raw material varieties, imbalances in the proportion of protein and energy in the feed, excess or insufficient amounts of mineral elements, vitamins, etc., lead to the occurrence of nutrient diseases, which reduces the chicken's egg production rate and egg weight.

Feeding management factors

1. The continuity of feeding is poor. The stages of the breeding process should be interlocked, and improper breeding at one stage will affect its subsequent performance. Such as brooding, excess nutrients during the growing period, leading to obesity during the production of eggs and affect production; brooding, malnutrition during the breeding period, low feed intake, thin chicken body, due to excessive nutritional burden after the opening, will make the laying hens disabled, discontinued Wait.

2. Feeding time, times, and methods are not fixed. When the farmer raises chickens in the countryside, they often feed their chickens whenever there is time, leading to the occurrence of egg-feeding, food-picking, food intake, or excessive leftovers, which may affect normal feeding and cause egg production. The amount of decline.

3. The keeper is not responsible and has extensive management. One is that the feeding is not uniform and suddenly it is less. Feeding is not timely, when laying hens are full of hunger. Second, there is insufficient drinking water. When the water pressure is low, there is no supply of water, especially in the summer, water shortage is particularly serious for chickens. Third, from time to time the observation of chickens, can not be timely picking out sick, disabled, weak chicken to be eliminated, resulting in feed wastage and poor uniformity of chickens.

4. Illumination time is unreasonable, and it may be long or short. Especially in rural areas, there are more frequent power outages at night, and it is impossible to supplement the light in time after the call. This causes a disorder in the physiological function of the laying hens, resulting in a decrease in egg production.

5. The house is poorly ventilated and the indoor temperature is high and low. First, due to poor ventilation facilities and unreasonable design, it is easy to accumulate harmful gases such as ammonia, carbon dioxide, and sulfur dioxide. The second is that summer humidity is high and the temperature is high, so that the layer of chickens suffers from heat stroke. Third, sudden changes in the weather did not close the doors and windows in time, which affected the egg production of laying hens.

Drug use factors

In the production of chickens, chemicals can only be used as emergency measures. Some chicken farms and specialized households tend to be sick and frightened. Since the side effects of certain drugs are not well understood, some drugs with the effect of inhibiting egg production are added after the laying hens are laid, which results in a sharp drop in egg production.

1. Sulfonamides, such as sulfamethoxazole, sulfamethoxazole, sulfadiazine, and sulfathiazole.

2. Anti-coccidial drugs, such as grams ball powder.

3. furazolidin in furans, furacilillin; quinoline drugs, such as warts; antibacterial drugs such as chlortetracycline, chlortetracycline; purine drugs such as aminophylline; hormone drugs, such as Dexamethasone, methyl testosterone and so on.

Various stress factors

1. The house is not closed tightly, and birds and small animals enter the house, causing the flock to be frightened and cause stress.

2. Frequent replacement of staff in some chicken farms can easily cause frightened chickens and become an important cause of the decline in egg production.

3. Improper vaccination. In particular, after laying hens, such as emergency vaccinations against Newcastle disease, infectious bronchitis, and infectious laryngotracheitis vaccine, the stress caused by vaccine reactions and chicken injections will be caused within 1 week, causing a decrease in egg production and an increase in soft-egg and crispy eggs. Etc.

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