Breeding cock The basis for cultivating cocks that conform to standard weight and physical fitness is selection. When selecting chicken seedlings, the farmer must choose a breeder farm that is strict in epidemic prevention, good in breeder quality, and high in hatching rate, and chooses lively, eyes are pleasing, the size is neat, the abdomen contracts well, the umbilical ring is completely closed, and there is no blood. And healthy, healthy chicks with an anus, only to grasp this level, can ensure the quality of the chicks. Scientific male hen ratio Different feeding methods have different male-female ratios. The male-female ratio of natural mating should be maintained between 1:7 and 1:8 throughout the seeding period, and the egg breeder should be kept at 1:10. In the early stage of seeding, the male and female ratios are used, and the broiler breeder is equipped with 1:7. Breeding chicken 1:9, in the medium term due to the death of some cocks, some cocks should be added, the best time is in the evening. The male-female ratio of cage artificial insemination is maintained from 1:25 to 1:30 for the entire seed production period. In the early stage of breeding, a group of cocks can be kept, the ratio of male to female is 1:20, the ratio of male to female is 1:25 in the middle, and the ratio of male to female is 1:30. If the proportion of death elimination is too large, you can add some new cocks around 55 weeks of age. Master the key technology of breeding farm breeding management to improve the egg production rate The standard for measuring the performance of a group of breeders is mainly the amount of eggs laid by the hens, as well as the peak height and peak maintenance time; whether the weight is up to standard after the start of production, whether the peak of the peak is replaced in time, feed nutrition, especially the energy standard. It is also possible to 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 when the appetite is basically normal and there are no obvious symptoms. The egg production rate has increased. Improve fertility rate Semen collection: generally for the back-abdominal massage method, when the sperm is collected, two people operate, one person is Baoding, one person collects the essence, Baoding staff hands hold the cock's legs and wings, and is placed under the armpit, head-to-back, tail-facing . The picker's left thumb and the other four fingers are naturally separated. The palm is attached to the inside of the cock's back and the inner part of the cock is massaged to the tail area. It is repeated several times. When the cock causes reflection, immediately flip the left thumb and forefinger and place it in the erection. On both sides of the device, squeeze into the mating device. At the same time, hold the fine cup in the right hand and massage the back of the cock tightly on the soft part of the cock. When the semen is shot, use the collecting cup to hold the semen. Remove the concentrate cup when no semen flows out. The collected semen should be completed in 30 minutes, and the time of collecting is generally arranged at 14:30~15:30. Insemination: The scalp can not be used too hard, must focus on the left side, because the fallopian tube is in the upper left of the cloaca, the squamous person and the insemination personnel should work closely together. The strength of the insemination should be guaranteed and the semen should be taken. The same force, the insemination needle can not have air, otherwise, the input semen will wrap the air to form a foam, the air into the fallopian tube, will cause semen overflow, resulting in failure of insemination, affecting fertilization rate. The interval of insemination is generally selected for 5 days, the effect is ideal, and a stable and stable fertilization rate can be obtained. Strict semen collection and correct insemination are the key to improving fertilization rate. Improve the hatching rate of hatching Incubation is mainly temperature control, and the optimum temperature for hatching eggs is 37 ° C ~ 37.8 ° C. When incubating, the temperature should be set to be within the appropriate temperature range. In the early stage of incubation, the incubation humidity should be kept at 55%~60% to ensure uniform temperature of the embryo, which is conducive to the formation of allantoic fluid and amniotic fluid. In the middle of incubation, the relative humidity is 30%~55%, which is conducive to evaporation of water. In the late incubation period, the humidity is increased to 65% to 70%. In high temperature environment, it is more conducive to the chicken shell breaking, when the chicks out of the shell more than 20%, the relative humidity should be maintained at 75%. Practice has proved that it is advisable to turn eggs every three hours from the first day of hatching. Proper breeding time In natural mating, the eggs are placed in the cock on the 2nd day after the 18th week of the breeding, and a good group is formed over a period of time. When the eggs are to be used, the fertilization rate is as high as 97%, and the fertilization rate is more than 93% at the 65th week of the laying period. When the meat breeder is raised on the ground, the 20th week after the group is transferred to the cock on the 2nd day. Some also put the cock before turning the hen. The breeding time of cage artificial insemination is best when the hen's egg production rate is about 5%. The early insemination provides an adaptation process for the chickens, and trains the artificial insemination personnel to fertilize the eggs when they are kept. The rate is around 94%, and the eggs can be used in advance. Good The first break is best carried out from 3 days to 5 days, no later than 9 days, and the second is repair, and it is carried out at the time of transfer. According to the test, after the repair of the broken cock, the fertilization rate of the eggs can be increased by more than 10%. The length of the hen's break, from the lower edge of the chicken's nostril to the tip of the cockroach, cock is 1/3, should not cut the cock's crotch too short. The thickness of the material should be deepened due to pain in the ankle after the fracture. To prevent ascending infection, antibiotics can be added to drinking water. Standardize operation, strengthen management, measures should be reasonable in the design of the chicken house, sit north to south, ventilation and ventilation; do a strict disinfection of the chicken house and disinfection of workers and vehicles in and out; follow the immunization procedures to do chicken vaccine Injection and disease prevention work; be sure to cut the sputum; use fresh and high-quality full-price feed or compound feed to maintain palatability, and gradually adapt to the transition when changing feed; try to reduce the shock of the people, so as not to affect the normal growth of the chicken; All in and out, unified clearing and disinfection, reducing the path of pathogen transmission. Vga Microscope Camera ,Vga Microscope,Mini Microscope 1000X,Handheld Microscope 1000X Ningbo Beilun Kalinu Optoelectronic Technology Co.,Ltd , https://www.yxmicroscope.com