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首页> 外文期刊>Poultry Science >Development of a method to control the water evaporation of hatching eggs during incubation.
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Development of a method to control the water evaporation of hatching eggs during incubation.

机译：开发一种在孵化过程中控制孵化卵水蒸发的方法。

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摘要

Three experiments were conducted to develop methods to control the amount of water loss and to evaluate the metabolic effects of water condition in the White Leghorn breeder eggs during incubation. One hundred twenty, 54, and 90 Julia strain White Leghorn breeder eggs were incubated at 37.8pC, 60% RH in experiments 1, 2, and 3. In experiment 1, eggs were drilled with various bore diameters of 0, 0.5, 1, 2, 3, 4, and 5 mm on the blunt end of the eggshell. In experiment 2, 4 x 4 mmpo windows were cut into the eggs or the eggs were drilled with 5 holes of bore diameter 2 mm on the blunt end of eggshell. In experiment 3, eggs were drilled with 1, 3, 5, and 7 holes of diameter 2 mm on the blunt end of eggshell. Eggs were treated on d 3 of each experiment and the amount of water loss was recorded on d 19 of incubation. Embryo growth was evaluated in experiments 2 and 3. In addition, the livers of embryos were collected in the 0-, 1-, 3-, and 5-hole treatment groups after weighing eggs to determine 3-hydroxy acyl coenzyme A dehydrogenase activity. In experiment 1, although higher water loss was observed in all windowed eggs than in control, there were no differences in amount of water loss among all bore diameters. Accordingly, that was not successful to control amount of water loss. In experiment 2, higher water loss was observed in drilled eggs at the same levels in windowed eggs as in control. Drilling holes was a more useful treatment to control amount of water loss on incubated eggs than windowing. In experiment 3, amount of water loss increased linearly with increasing number of holes on the blunt end of eggshell. Hepatic 3-hydroxy acyl coenzyme A dehydrogenase activity increased with increasing the number of drilled holes.
机译：进行了三个实验，以开发方法来控制孵化过程中White Leghorn种蛋中水分的流失量和评估水分条件的代谢作用。在实验1、2和3中，分别在37.8pC，60％RH的条件下，将120、54和90个朱莉娅（Julia）品系白色来格霍恩种蛋孵化，在实验1中，钻出各种孔径分别为0、0.5、1，在蛋壳的钝端上留出2、3、4和5毫米。在实验2中，在鸡蛋上切出4 x 4 mmpo的窗口，或者在鸡蛋壳的钝端上钻5个孔径为2 mm的孔。在实验3中，在蛋壳的钝端钻了直径分别为2毫米的1、3、5和7个孔。在每个实验的第3天处理卵，在孵化的第19天记录失水量。在实验2和3中评估了胚胎的生长。此外，称重鸡蛋后，分别在0、1、3、5和5孔处理组中收集了胚胎的肝脏，以确定3-羟基酰基辅酶A脱氢酶的活性。在实验1中，尽管在所有开窗的鸡蛋中观察到的失水量都比对照中的高，但是在所有孔径的失水量中都没有差异。因此，不能成功地控制失水量。在实验2中，在开孔的鸡蛋中观察到较高的水分流失，窗口鸡蛋中的水分含量与对照中的相同。与开窗相比，钻孔是控制孵化鸡蛋失水量的一种更有用的处理方法。在实验3中，水分损失的量随着蛋壳钝端上孔的数量的增加而线性增加。肝3-羟基酰基辅酶A脱氢酶活性随钻孔数量的增加而增加。

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