Before the hen is sexually mature, castration can be used to control the hormone secretion of the hen. So how do hens castrate? How to nurse after castration? Next, I will bring you the technical steps of castrating hens, hoping to help you. Technical steps of castrating hens
1. Variety selection
Choose high-quality yellow or jute feather broiler breeds recognized in the market, with moderate individuals, generally 18 days old, and castrated chickens weighing 2.4? 2.9 kg, yellow skin and short feet, such as Guangxi Yulin Yellow Chicken, Xiayan Chicken and Guangdong Xinyi Huaixiang Chicken. These varieties have unique flavor and are well received by the masses, with large sales volume, high price and good benefits.
Second, the age of castration and feeding management before and after castration
The castration period should be appropriate and castrated prematurely, and some males will be retained after castration, which is what the masses call it? Half-baked chicken ; Late testicular surgery is difficult, and it is easy to bleed and cause death. The author thinks that no matter what breed, as long as more than 3% chickens are crowned red, crowing and trampling on hens, they must be castrated. During this period, we must do a good job in daily feeding management to ensure the health of the chickens. If you get sick, you will miss the castration period and cause losses.
a few days before castration, the necessary vaccination should be completed at one time and deworming should be carried out; Prepare fences and sports grounds, and clean and disinfect them. Every 3 chickens, calculate the required area according to 1 chickens per square meter. The playground should be wide, pollution-free, barren hills and fruit fields with grass vegetation, which is more convenient for management. In order to prevent chickens from bleeding too much during castration, vitamin K35 mg per kilogram of body weight was added to the feed three days in advance to strengthen blood coagulation function and improve resistance.
feeding more green forage, preferably artificial forage such as ryegrass, and reducing the protein level in the diet by 2 percentage points 1 days after castration can effectively prevent it? Half-baked chicken Generate. Capons are raised for a long time, generally 165? It takes 185 days to be released, so as to save the feed cost as much as possible during the feeding process. The weight gain of capons has strong compensation ability. As long as there is enough nutrition in the later stage, they can reach the standard weight of varieties regardless of the feeding conditions in the early stage. If there is a small number of farmers in forest and mountain areas, they can use agricultural and sideline products, such as rice bran, bran, rice, cassava and corn kernels (soaked), so that chickens can exercise more in the field. Professional intensive scale feeding should try to reduce the dietary level. Generally, the energy is 2.62 million calories/kg, and 13% in protein is enough. However, vitamin nutrition should not be reduced, but should be increased.
daily management should be careful to guard against thieves, especially to prevent colds and respiratory diseases. Disease not only affects the growth, but also reduces the meat quality of chickens by taking medicine, so special attention should be paid.
Third, the castration technique should be excellent and the work should be meticulous
The castration operation should be performed in sunny weather. Usually at 7 am? Surgery at 11 o'clock. After 23: p.m. before the operation, feed enough water, catch the chickens to be castrated in cages, and put them in a dark room, and try to keep quiet so that the chickens are not frightened and agitated. Skilled, fast and accurate operation is the minimum requirement for technicians. After the operation, each chicken was fed with a mixture of vitamin K3, vitamin C and Yunnan Baiyao (which can relieve pain, coagulate blood, enhance resistance and promote wound healing as soon as possible), and then placed in a prepared chicken house, where a thin layer of straw was spread. You can't mix groups before and after castration, reducing fighting; In addition, chickens have the characteristic of consuming red matter, so chickens bleeding from wounds must be kept separately, otherwise they will be pecked to death. After a week, the chickens will be released from the playground. If they are in forest fruit fields or mountain forests, they can also feed on insects, ants and grass flowers to supplement their nutrition. After the chickens are released, clean the grass in the house and spread clean and thick river sand. Don't use the cement floor in the house, because the chicken will cause scars on the soles of its feet, said the castrated chicken market? Rotten soles? .
Fourth, grasp the sale period flexibly, so that the body shape can meet the marketable conditions as far as possible
After castration, the chickens will only molt gradually, reaching 135? At the age of 145 days, we should pay attention to the growth and change of feathers. During this period, we should increase the protein percentage and energy level, add high-quality fish meal, supplement zinc and manganese, and accelerate the growth of feathers, especially tail feathers and back feathers. Technical video of castrating hens
Matters needing attention in hen breeding
1. The cold resistance is poor. The temperature of newly hatched chicks is 3℃ lower than that of adult chickens, and it will take 1 days to reach the normal temperature. In addition, the chicks' fluff is short and thin, so they can't keep out the cold, so their adaptability to the environment is not strong. They must rely on artificial heat preservation to grow and develop normally. Chickens of 1-3 days should be kept warm and kept in a clean and hygienic environment. Chickens over 3 days old are basically full of feathers and can be kept warm.
2. The body temperature of chickens is high and develops rapidly. Generally, the body temperature of chickens is between 4.8 and 41.5℃, so they must be raised in a well-ventilated environment with warm winter and cool summer. In addition, chickens have short digestive tract, vigorous metabolism and rapid growth and development, so they must be fed with nutritious and digestible feed to meet the needs.
3. The resistance is weak, especially chicks, which are easily attacked by harmful microorganisms. Therefore, in addition to cleaning the environment, we should also do a good job in prevention. For example, outsiders are strictly prohibited from entering and leaving the henhouse, the environment and cages should be disinfected, and all kinds of chickens should be injected with various vaccinations regularly.
4. Chickens are timid, especially chicks. The light ones are crowded, the growth and development are blocked, and the heavy ones trample on each other, causing disability and death. Therefore, chickens should be raised in quiet places. Rough management, sudden noise, dog and cat intrusion, catching and so on can all lead to riots and affect the growth of chickens.