Laying hens elimination management technology

With the development of the laying hen breeding industry, fine management has also become a compulsory course in chicken farms. To do a good job in eliminating laying hens is one of the key means to improve the efficiency of laying hens breeding. Timely elimination of unideal chickens not only saves feed, labor, and venues, but also makes the flocks neat and consistent. To reduce the risk of flock diseases and improve the efficiency of raising chickens, let's take a look at the technology of layer elimination management.

Disabled chickens should be eliminated.

Before the age of 20 weeks, it is required that the body shape and appearance of chickens should be in line with the characteristics of this breed, and disabled chickens should be eliminated. The chickens in the flock that are blind, crooked beak, limping, emaciated, twisted wings, bald tail and so on should be eliminated.

Eliminate good-looking chickens

250 days to eliminate the feet, beak yellow, beautiful appearance of the chicken. In the same flock, there are differences in individual production performance, and when the production lasts for a period of time, the difference is more obvious. At about 250 days of age, the feathers are more complete, glossy, the activity is extremely flexible and fast, and the chicken crown is ruddy. Beautiful chickens are often low-production chickens, even do not lay eggs, empty material consumption, should be eliminated.

Eliminate chickens according to feces

Go to the henhouse at night or in the morning to observe the feces. The feces of laying hens are soft and moist, while those that do not lay eggs will be eliminated because of less food intake, slow digestion and atrophy of digestive tract.

Eliminate discontinued chickens

Chickens after 280 days of age have laid eggs for more than 5 months, and most of the stopped-production chickens have pale and thin crowns. Such chickens should be resolutely eliminated. Due to the long-term continuous laying of eggs, the pigment has degenerated, and the yellow pigment in various parts (especially the leg and beak) gradually disappears white. The more eggs are laid, the more serious the discoloration is. At this time, if the color of some chicken legs and beak changes from white to yellow, it also means that it is a discontinued chicken and should be eliminated.

Eliminate big-bellied chickens

Chickens after 280 days of age often walk like penguins and feel abdominal stiffness (yolk peritonitis) or abdominal softness (tubal cyst) when touched. These chickens no longer lay eggs and should be eliminated.

Eliminate early molting chickens

After finishing a laying period, laying hens usually change their hair from September to October every year. Low-yield chickens began to molt in August, and lasted a long time, stopped production for a long time, so they were eliminated.

Eliminate chickens that lay big eggs

After the opening of production, there are often some chickens lay eggs as big as duck eggs, these chickens often lay an egg in 3 days, the calculation of egg feed ratio has lost money and should be eliminated.

Eliminate chickens that do not lay eggs

Chickens that do not lay eggs are mainly due to epidemic diseases or improper management. Some chickens do not lay eggs because of ovarian infection or other reasons, and they will not lay eggs in the future. Such chickens should be eliminated as soon as possible. At the same time, chickens that lay soft eggs and broken eggs should also be eliminated.

Elimination of ovarian inflammation in chickens

From the point of view of appearance, those laying hens who do not lay eggs because of ovarian inflammation have no symptoms in the first few months. 250 days after the peak of egg production, they do not choose eggs in the morning, and the laying situation is observed after 4 o'clock in the afternoon. mark 4 hens with less than 3 eggs, or 3 chickens with less than 2 eggs, and then touch the cages one by one at about 5 o'clock in the morning for 5 days in a row. And mark those without eggs. After 5 days, do all the panning for more than 3 marks (so that the laying rate of the chicken is not more than 60%, and there is no feeding value), and then do it again every other month.