Effective measures to improve the hatching rate of poultry
December 22 03:09:45, 2018
Poultry hatchery's output value accounts for a large proportion of the income of poultry, and whether the hatchery's performance is good or not has a direct impact on operating efficiency. The measures to increase the hatching rate of poultry are briefly described as follows: 1. The proportion of males and females adjusting male and female breeds is generally 1:12-15 for light chickens, 1:10-12 for medium chickens, and 1:8-10 for heavy chickens. This will increase the fertilization rate of the eggs. Second, properly store eggs 1. To shorten the storage period. The hatching period of the general breeding eggs does not exceed 7 days before hatching. In the optimum storage environment, the hatching rate of the breeding eggs begins to decrease after 7 days. 2. During the storage of the eggs, cover them with a plastic film to prevent the eggs from dehydrating excessively during storage. Using this method can improve the hatching rate of 1.3% to 3%. 3. Temperature and humidity of eggs during storage period. The temperature within a week of storage is 16°C to 17°C, and preferably 10°C to 12°C over a week. The relative humidity is generally kept at 75% to 80% to prevent evaporation of moisture in eggs. 4. Keep the egg upright while keeping the eggs upright. The inside of the incubator should be head down and a high hatching rate can be obtained. Third, do a good job in the seven stages of the incubation period 1. On the 15th day after the hatching of the eggs, place an airtight film on the shells to reduce the air-permeable area of ​​the shells by 13%. This will increase the hatching rate and hatch. Chicks are well developed and grow rapidly. 2. Spray. During hatching, spraying with ordinary clean water 4 times a week, the hatching rate of fertilized eggs can be increased by 7.3% to 25%. 3. Use anion generator. The slight negative ionization of air in the incubator has a positive effect on hatching quality and hatching rate. In the incubator with an air ion concentration of 1 to 300,000 ions per square centimeter, the hatching rate can be increased by 6.5% to 11.4%. 4. Lighting at hatching speeds up hatching without increasing deformity and mortality. Light incubation shortens the incubation time by 36 to 48 hours. The chicks hatched by light had a large body size, and the effect of weight gain was obvious. The opening age was 5 days ahead of schedule. 5. The temperature of the incubation period. The general temperature of 37 °C ~ 39.5 °C incubation temperature. If the temperature is too high or too low, the incubation period will be shortened or extended, and the fetal death rate will increase. 6. Control of humidity is the key to successful incubation. The exact method for determining the optimum humidity during hatching is to periodically weigh the same hatching egg sample within 1 to 18 days after hatching. The hatching egg should lose about 0.7% of the weight per day. In principle, the humidity is high in the middle and low in the middle. The humidity in 1 to 7 days of incubation is 60% to 65%, 5 to 55% in 10 to 18 days, and 57% to 60% in 19 to 21 days. Fourth, the correct midwifery is an effective measure to improve the hatching rate. Chicks are generally shelled out from 20 to 22 days, but some chicks are unable to break shells. Therefore, hatching is usually performed before the 22nd day of incubation, but if urine is found When the sac vessels do not dry, they should be immediately returned to the incubator and wait for dryness before assisting in the breaking of the shell.
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