Management measures for hatching of turkey farming

(1) temperature: it is the most important condition for turkey hatching. Because the fat content and heat production of turkey eggs are higher than those of eggs, the hatching temperature of turkey eggs should be slightly lower than that of eggs, and the temperature should decrease with the increase of embryo age. General turkey hatching can be divided into variable temperature hatching and constant temperature hatching. 1. Variable temperature hatching: suitable for whole batch hatching of breeding eggs, all in and all out. The temperature is slightly higher in the early stage of incubation, and later, with the growth and development of the embryo, the temperature of incubation should be gradually reduced to prevent overtemperature in the middle and later stage. 2. Constant temperature hatching: suitable for hatching eggs in batches.

(2) humidity: the humidity required by turkey eggs during the incubation period is relatively stable. The suitable humidity in the incubator is 50%, 60%, and 65%, 75%, respectively. Both high temperature and low humidity have an impact on embryonic development, so we must prevent high temperature and high humidity. When the humidity is low, the moisture in the egg evaporates too much, which can easily cause the adhesion of the embryo and the eggshell membrane and the dehydration of the turkey; if the humidity is too high, the turkey has a big belly and the navel does not heal well. The ambient humidity in the incubator is required to be 75%. (3) ventilation: in the process of development, the embryo must constantly exchange gas with the outside world except in the first few days, and it is strengthened with the increase of gestational age. Especially in the later stage, the embryo changes from allantoic respiration to lung respiration, which requires more oxygen. The death of embryos in pre-hatching period is mainly related to poor ventilation. Ventilation is closely related to temperature and humidity, good ventilation, low temperature, low humidity, poor ventilation, high humidity, excessive ventilation, temperature and humidity is difficult to guarantee. Ventilation has a great relationship with embryo heat dissipation, especially in the later stage of hatching, embryo development is more exuberant, heat production is more, if the heat does not come out, it will seriously hinder the normal development of embryos, or even burn to death. Therefore, the homogenizing fan in the incubator can not only provide oxygen and carbon dioxide for the embryo, but also make the temperature in the incubator disperse the waste heat evenly. Ventilation in the incubator is also a problem that can not be ignored, and ventilation equipment should be provided. (4) egg turning: the main purpose of egg turning is to change the position of the embryo, prevent embryo adhesion and promote amniotic membrane movement. Turning eggs manually or mechanically is less than turkeys with nests, because turkeys turn eggs for the purpose of regulating the temperature of internal and external eggs. Manually turn the eggs every 2 hours, 90 degrees each time. (5) Cold eggs: in the later stage of incubation of turkey breeding eggs, due to the sharp increase in their own temperature, attention should be paid to cold eggs when the development rate is accelerated, especially in summer. Cold eggs can stimulate embryos and adjust the speed of development. The method is as follows: open the incubator and launch the egg cart 2pact 3. When the surface temperature of the breeding egg drops to 33 ℃, it can be pushed to continue to hatch. Cold eggs are not a necessary hatching procedure, but should be based on embryonic development. The specific conditions such as incubation days, temperature and the performance of the incubator can be grasped flexibly.