The performance characteristics of chickens to lay eggs
In the process of breeding laying hens, the laying period of laying hens is a very important stage, which is related to the efficiency of the farmers. Generally, the laying stage of laying hens starts to lay eggs in about 120 days, but different chicken farm, raising method and the different feeding aspects so laying time will also be different, so this requires the farmers to learn some points to observe the laying of the laying hens, and do the laying work in the laying period in advance.
1. Chicken scream: When the laying hen is about to lay eggs, the general screams will often make a squeaking sound. This means that the chicken has entered the egg laying period. At this time, the management should be more careful and prevent all kinds of stress. Occur, timed feeding, and often observed. At the same time, the light should be gradually increased to 16 hours, and the feed gradually transitions to laying hen feed.
2, the intake of drinking water increases rapidly: when the laying hens are about to enter the laying period, the feed intake and drinking water of the hens will increase much more than usual, because the laying hens have not yet reached maturity, with the growth of body weight and the amount of nutrients needed to start laying eggs are rapidly increasing. The 18-week-old chickens consume about 90 g per day, while the 24-week-old chickens feed 120 g. Drinking water also increases rapidly. Therefore, during this period, on the one hand, sufficient feed and drinking water should be supplied to allow the chickens to eat freely. On the other hand, in the feed nutrition, not only the standards required by the varieties but also the quality of the feed should be improved. Guarantee egg production and chicken health, and obtain better yield and economic benefits.
3. Changes in skin: Farmers should pay attention to the fact that when the skin of a laying hen is yellow skin, the first egg is produced. As the pigment is deposited in the egg yolk, the yellow color of the chicken skin also begins to subside, in order: around the eye, Around the ear, noise, legs. According to this feature, we can judge the color of different parts when we eliminate the oligo-pigmented chicken. Most of the cockroaches and legs turn yellow.
4.changes in the pubic bone and cloaca: when the laying hen will enter the laying period, the cloaca of the laying hen will become large, moist, inflated and soft, and the pubic spacing of the laying hen increases, the width can reach three fingers, so the breeding Users can pay attention to this detail to determine whether the laying hen should lay eggs.
The above four are the physiological manifestations of the laying hens. The first laying period of the laying hens is about 1 year. The whole process can be divided into the pre-laying period, the peak period and the late egg laying period. Three stages, each stage must be carefully raised by the farmers to ensure that the laying hens play a good egg-making performance and improve the economic benefits of the farmers.