Breeding breeds
The basis for breeding a standard rooster that meets the standards of body weight and physical fitness is selection. When selecting chicks, farmers must choose breeder farms with strict epidemic prevention, good breeder quality and high hatching rate, and choose lively, eyeful eyes, neat and tidy size, good abdominal contraction, complete closure of umbilical rings, and no blood spots. Only healthy chicks with clean anus can ensure the quality of chicks.
Scientific male and female ratio
Different feeding methods, different ratio of male to female. The ratio of male to female mates for natural mating should be maintained at 1:7 to 1:8 during the entire breeding period, the egg breeder should be kept at 1:10, the ratio of male to female at the early stage of breeding, the broiler breeder at 1:7, and eggs. The breeder is 1:9, and due to the elimination of some cocks during the middle period, some cocks should be added. The best time is to perform in the evening. The male-female ratio of cage insemination is maintained at 1:25 to 1:30 for the entire species. In the early period of mating, a group of more roosters can be kept, with a male to female ratio of 1:20, a medium-to-mother ratio of 1:25 in the middle period, and a 1:30 male-mother ratio in the later period. If there is a large proportion of deaths eliminated, some new roosters can be added around 55 weeks of age.
Grasp the key technology of breeding farm management and improve egg production rate
The standard for measuring the yield performance of a group of breeders is mainly the amount of eggs laid by the hens, the peak height and peak duration; whether the weight is up to standard after the start of production, whether the peak material in the peak period is promptly replaced, and feed nutrition is especially energy standard. It can also determine the level of egg production. Various diseases, such as variant infectious bronchitis, reproductive infectious bronchitis, transient encephalomyelitis, glandular gastritis, and various intestinal diseases, will affect the normal dietary conditions without obvious symptoms. Egg production rate rose.
Improve fertility
Collecting essence: generally back-belly type massage method, when two people operate when picking, one person Baoding, one person picking, Baoding staff hands hold the cock legs and wings, placed under the armpit fixed, head back, tail forward . The left hand thumb of the spermathilotte was naturally separated from the other four fingers, and massaged gently on the back of the cock on both sides of the back of the cock, and returned to the tail area several times. When the cock caused a reflex, the thumb and index finger of the left hand were immediately reversed and placed on the erect mating. On both sides of the device, squeezing toward the mating device. At the same time, the right hand grips the collection cup and massages the abdomen tightly against the abdomen's abdomen and softens it. When the semen is injected, the semen is filled with semen, and the left hand squeezes several times. The sperm cup is removed when no semen flows. The semen collected must be completed within 30 minutes. The timing of semen collection is usually 14:30-15:30.
Insemination: the anal staff can not exert too hard, we must focus on the left, because the fallopian tube in the upper left cloacal, anal staff and insemination workers in the operation should be closely coordinated, insemination efforts should ensure and take semen The same intensity, the insemination needle can not have air, otherwise, the input semen will wrap the air to form a bubble, the air into the fallopian tube, semen spillover, resulting in sperm failure, affecting the fertilization rate. Insemination interval is generally selected for 5 days, the effect is ideal, and the rate of fertility can be continuously and steadily. Strict sperm extraction and correct insemination are the key to improving the fertility rate.
Increase hatching rate
The incubation is mainly controlled by temperature. The optimum temperature for hatching eggs is 37°C~37.8°C. During incubation, the temperature should be set to a suitable temperature range. In the early stage of incubation, the incubation humidity should be maintained at 55% to 60% to ensure that the embryos receive a uniform temperature, which is conducive to the formation of allantoic fluid and amniotic fluid. During the middle of incubation, the relative humidity is 30% to 55% to facilitate the evaporation of water. In the later period of incubation, the humidity is increased to 65% to 70%. In a high temperature environment, it is more conducive to chicks breaking shells. When chicks are more than 20% shelled, the relative humidity should be kept at 75%. Practice has proved that it is advisable to turn the eggs every 3 hours from the first day of incubation.
Appropriate breeding time
In natural mating, the egg is fed into the rooster on the 2nd day after the 18th age of the breeding group, and a good group is formed over a period of time. Fertilization rate is as high as about 97% when eggs are to be kept, and fertilization rate is also above 93% at the age of 65 weeks after the laying of eggs. When breeding ground chickens are raised on the ground, they are put into cockerels on the 2nd day after the transfer. , and some put the cock before transferring the hen. The breeding time for caged artificial insemination is best when the laying rate of hens is around 5%. Early insemination can provide both an adaptive process for the flock, training of artificial insemination personnel, and fertilization when the breeding eggs are received. The rate is about 94%, and eggs can be used in advance.
Good breaks
The first break is best performed on the 3rd to the 5th day of age, but not later than the 9th day of age, and the second time for the repair. According to tests, after fertilizing the badly-cocked cock, the fertilization rate of the egg can be increased by more than 10%. The length of the hen's cut off was from the bottom of the nostril of the chicken to 1/2 of the tip of the cock, and the rooster was 1/3. Avoid breaking the cock's crotch too short. Because of the pain in the palate after breaking, the thickness of the material should be deepened. To prevent upside infection, antibiotics can be added to drinking water.
Standardize operation, strengthen management, and measures are in place. The design of the chicken house should be reasonable. It should be north-south, with good ventilation and ventilation. It is necessary to do a good job of disinfection of chicken houses and disinfection of workers and vehicles in and out of the house; Injection and epidemic prevention work; cutting must be done well; use fresh, high-quality full-price feed or compound feed to maintain palatability; gradually adapt to the transition when changing feeds; minimize frightening visitors so as not to affect the normal growth of chickens; All-in, all-out, uniform disinfection in the clearing house, reducing pathogen transmission.
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