Effective measures to increase the hatching rate of breeder eggs

Adjust the proportion of male and female breeders: The ratio of male to female chickens is 1:12 to 1:15 for light chickens, 1:10 to 1:12 for medium chickens, and 1:8 to 1:10 for heavy chickens. This will increase the fertilization rate of eggs. .

Store eggs properly. The storage period of eggs before hatching should not exceed 7 days. During the storage of eggs, cover them with a plastic film to prevent excessive water loss from the eggs. Using this method can improve the hatching rate of 1.3% to 3%. The temperature of the eggs within one week of storage is 16°C~17°C, and 10°C~12°C is appropriate for more than one week. The relative humidity is generally kept at 75%~80% to prevent the moisture in the eggs from evaporating too quickly. Keep the head up and keep it upright when storing eggs, and head down in the incubator.

Precautions during hatching On the fifteenth day after the eggs are hatched, an airtight film is applied to the shells to reduce the air-permeable area of ​​the shells by 13%. This will increase the hatching rate, and the hatched chicks will develop well and grow rapidly. During hatching, spraying with ordinary clean water 4 times a week can increase the hatchability of fertilized eggs by 7.3% to 25%. The slight negative ionization of air in the incubator has a positive effect on hatching quality and hatchability. In the incubator with an air ion concentration of 150,000 to 300,000 ions per square centimeter, the hatching rate can increase by 6.5% to 11.4%. Lighting at hatching speeds up hatching without increasing deformity and mortality. Light incubation can shorten the incubation time of 36 to 48 hours, and the chicks are large in size and have a significant weight gain effect. During the incubation period, the temperature is usually 37°C to 39.5°C. If the temperature is too high or too low, the incubation period will be shortened or extended, and the embryo mortality will increase. During the incubation period, the humidity management in principle grasps two highs and middle lows: 60% to 65% in 1 to 9 days, 50% to 55% in 10 to 18 days, and 57% to 60% in 19 to 21 days.

Timely midwifery chicks are generally hatched from 20 to 22 days after hatching, but some chicks are incapable of breaking the shell and must be hatched and hatched before the hatching day twenty-two. However, if the allantoic blood vessels are not dry, they must be immediately Put it back into the incubator and wait for it to dry before assisting in shelling.

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Pharmaceutical Intermediates

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