After laying eggs for a certain period of time, the egg production rate will drop, especially after the peak period of egg production. Low-yielding laying hens and discontinued laying hens not only have low egg production rate or even lay eggs, but also consume feed, manpower management, etc., which greatly increase the cost of raising, thus reducing economic benefits. Therefore, the timely elimination of the laying hens is very important.
1 elimination method
1.1 visual inspection
Observation method refers to the method of obsolating low-yield and discontinued chicken by observing the appearance characteristics, mental state, feeding, drinking water and fecal shape of the chicken during normal or feeding.
1.1.1 Observing the appearance features
The structure and function are compatible. Low-yield chickens, discontinued chickens due to low egg production or discontinued production, the body structure will undergo some changes, the naked eye is generally characterized by a thick body, the head is thicker, the individual is too large, too fat, especially the abdomen looks large; or body type Weak, the head is smaller, the individual is too small and too light.
1.1.2 Observing mental state
High-yield chicken eyes are large and fascinating, lively and active, quick-responding, flexible in action, loud and loud, sensitive to changes in the external environment, constantly moving back and forth; low-yielding chickens or discontinued chickens often close their eyes and feel depressed. Often huddled in the corners or corners of the cage, not screaming, hoarse, and relatively slow to respond to changes in the external environment, sometimes it is not willing to move.
1.1.3 Feeding and drinking
The characteristic of chicken is that as long as it is fed, it will be eaten. Therefore, when you are feeding normally, you will observe carefully and find that chickens that are not willing to come to eat or eat less are definitely sick chickens or chickens in poor condition. The egg rate is certainly not high or has fallen.
1.1.4 Observing the shape of the stool
The high-yield chicken manure is soft and soft, the water content is relatively large, the landing is not formed, and the dung column under the chicken cage is relatively high. Discontinued chicken or low-yield chicken manure drying. It is strip-shaped and the dung column under the chicken cage is low. Some sick chickens are yellowish white or green and damp, some are very thin, feathers around the anus of the chicken are dirty, and the feathers that fall off can be seen in the feces.
1.1.5 Others
If you find a chicken with obvious disability, such as broken wings, pouting, rectal prolapse, etc., there is no therapeutic value to be eliminated immediately.
1.2 touch method
Touch method refers to the method of eliminating low-yield and discontinued chicken by touching the chicken's keel, phalanges, abdomen, skin and anus.
1.2.1 Touch the keel and toe bone spacing
The keel and phalanges are the main part of the cloaca, and its size is directly related to the egg's output. When touched by hand, the pubic bone of the high-yielding laying hen is relatively thin, the end is soft, the pubic spacing is generally two fingers wide or even wider, the pubic bone and keel are also wider, and can reach four fingers wide; The pubic bone is relatively hard and bends inward. The distance between the pubic bones is generally one finger wide or even less. The distance between the pubic bone and the keel is also narrow, about two fingers wide, and it is obvious that the egg cannot pass.
1.2.2 touch the abdomen
The hen's reproductive organs are located in the abdomen, so by touching the hen's abdomen, the development of the chicken's reproductive organs can be mastered, so as to control the laying of the chicken. Normal laying hens have less subcutaneous fat in the abdomen, and are soft and elastic. They can feel high temperature when touched; low-yield chickens and discontinued chickens have lumps or liquids on the abdomen, some chickens are thin, the chest muscles are thinner, and the temperature is felt when touched. Low; some chickens are overweight, abdominal fat is too thick, too much fat is deposited in the ovaries, affecting the formation of eggs, resulting in less or no eggs.
1.2.3 Touch the skin
Normal laying hens have soft skin and high transparency. The skin of low-yielding chickens or discontinued chickens looks very dry, has a rough feeling, is low in transparency and pigmented, and has more dander.
1.2.4 touch the anus
Due to normal egg production, the anus of the laying hen is usually moist; the anus of the low-yielding chicken or the discontinued chicken appears dry.
1.3 small cage marking method
The small cage marking method is applicable to the elimination of caged laying hens. It refers to the daily marking of each chicken cage. Through the accurate analysis of the number of eggs laid by the chicken for a period of time, combined with the naked eye observation method and the touch method, the low yield is judged and eliminated. The method of stopping chicken production is a more accurate method of elimination.
1.3.1 Small cage mark
First, each cage is numbered accordingly. In the feeding management, the number of eggs laid was recorded and counted by daily egg laying conditions, and the chicken cage number that failed to reach the next egg of each chicken was marked. After a period of time, the actual egg production rate of each cage was calculated. For the chicken cages with lower egg production rate than the average egg production rate, signs are placed and ready for elimination.
1.3.2 Elimination
The first round of elimination was carried out according to the naked eye observation method and the touch method, and the apparently discontinued chicken and the low-yield chicken were eliminated.
Then observe, record again, and then eliminate.
After the first round of elimination, the egg production rate of the marked cage chicken will definitely increase, but if the egg production rate is still not up to the expected requirements, it can be marked and eliminated again, so after several eliminations, the chickens The egg production rate will definitely increase greatly.
1.4 Other situations
Once a chicken suffers from quail egg yolk, it can hardly be cured and is very depleted. Therefore, chickens with quail egg mites should be eliminated immediately.
2 treatment after elimination
It is not the time to sell chickens in large quantities, and the prices are often higher. Therefore, if the chickens are eliminated, they can be sold in time if they can be sold in time, so that they can obtain certain benefits.
After the elimination of chicken, if the chicken is thin and can not be sold in time, it can be raised through short-term fattening, increase the weight of the chicken, and sell at a timely time to obtain economic benefits.
In short, for the elimination of low-yield chickens and discontinued chickens, we must not rely solely on one aspect to judge, but through comprehensive judgments such as observation, touch and small cage marking, we can accurately pick out low-yielding chickens and stop-producing chickens and eliminate them in time. By selling in time or after short-term rearing, it is possible to reduce costs, reduce losses, and increase the economic benefits of raising chickens.
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