The choice of 1 egg should be based on the fresh eggs produced by the hens after 3 weeks of production. The surface of the eggshells is smooth and clean, with a dense structure and no cracks. Eggs are oval in shape, and the size of the eggs varies depending on the type or strain. For example, the eggs of Jiangxi black-bone chicken require 30-42 grams, Jiangshan white-bone chicken eggs require more than 50 grams, and Xuefeng black-bone chicken requires 45 grams.
The disinfection of 2 kinds of eggs is generally used fumigation method, namely put into the disinfection room or disinfection cabinet, or placed on the egg rack, covered with plastic film, so that when fumigation does not leak. Normally, 30 ml of formalin solution per cubic meter volume is placed in a porcelain or ceramic container, and 1.5 g of potassium permanganate is added, ie, smoking is fumigated. Room temperature must maintain 20 °C ~ 25 °C, fumigation for 30 minutes. If the eggs are sterilized in the incubator, place the sterilizing tray under the incubator rack, close the incubator door and the vent hole, disinfect and open the door, and turn on the fan to remove the odor. However, for hatching eggs of 12 to 96 hours, must not be disinfected, this time is a dangerous period of disinfection.
3 The artificial hatching of artificially hatched black-bone chickens is the same as the egg-laying chicken hatching method. All hatching implements for egg chickens are suitable for the hatching of black-bone chickens. The incubation period is 21 days.
3.1 Temperature The suitable temperature range for black bone chickens is between 38.2°C and 39°C. If hatching is done in batches, constant temperature incubation is generally used, and “old eggs with new eggs†are used, and the temperature is 37.8°C, which is slightly affected by the season. If the whole batch is hatched, the temperature will be treated differently according to the different developmental stages of the embryo, and the temperature is generally used for hatching. The initial stage of hatching is slightly higher, the middle period is correspondingly lower, and the later period is slightly lower.
3.2 Humidity Generally, the relative humidity should be kept between 55% and 60% within 1 to 7 days after the eggs are incubated; 5 to 55% during 8 to 18 days; and 60% during 16 to 21 days. ~70%.
3.3 Ventilation In general, the amount of air required for pre-hatching embryos is small, and the inlet and outlet holes of the incubator should be closed. With the increase of the embryo age, the inlet and outlet holes should be gradually increased. After 17 embryos, all the inlets and outlets can be opened.
3.4 Turning eggs After hatching, the eggs must be turned and the turning angle is 90 degrees. Every day and night turning eggs 8 to 12 times, with automatic egg turning device, you can more.
3.5 Cool eggs Eggs in the late post-harvest period (ie, after 17 days), fat metabolism is strong and emit heat, cool eggs are needed only when the temperature of protein species increases sharply. When cooling eggs, cut off the power, turn the fan as usual, and open the incubator door, 15 to 30 minutes each time, 2 times a day. Normally cool eggs are stopped when the eggshell temperature drops to 32°C.
3.6 The egg is usually treated 3 times. When the eggs are incubated for 5 to 6 days, headlights are taken. Those with brighter eggs and no blood in the eggs are anaesthetized eggs; those with black spots and peripheral blood or blood strips are dying embryonic eggs; those surrounded by black dots are normal fertilized eggs with spider-like vascular distribution. The second light was taken at 1.4 days after hatching. The allantoic sac was seen in the small head of the egg. When the egg was seen, only the air chamber was bright, and the rest was dark. It was clear that the eggs were normally developed. The third egg, combined with the landing, is usually performed when the eggs are incubated for 18 to 19 days. The normal embryonic egg sees a dark shadow flickering in the air chamber. Outside the air, the whole egg becomes opaque or dark, but some blood vessels are still seen near the air chamber.
3.7 When the hatching is generally 18 to 19 days after hatching, the embryos are transferred from the egg tray of the incubator to the hatching tray of the hatcher. Hatching began in 19 days and began to hatch. In 20 days, the hatching period was reached. Normally, it should be chopped once every 4 hours.æ¡ æ¡ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚ è¦æ±‚. In the later stages of hatching, chicks with difficult shelling may receive midwifery, and the fluffy hairs that have yellowed or exposed inner linings, and the embryos that are weak in the shell are gently peeled off, and the sticky shell membranes are separated and the chick heads are separated. Gently pull it out of the shell and make it struggling. However, in the case of lining or red blood vessels or bleeding, the stripping should be stopped immediately.
Foot of ningxia hong xingda incense Organic Apple fruit suborbicular, fruit surface color yellow green, most with orange chardonnay fruit surface, covered with bright red stripes, pulp yellow-white, succulent crisp, sweet, rich fragrance, quality first-class; The fruit has a sugar content of over 15%, more than 4% of the national average, and the flesh is tight and crisp and sweet, which is widely loved by consumers all over the world. There is a longer optimal consumption date than any other apple, not even refrigerated. It can be kept for 4 months at normal temperature. If refrigerated, Fuji can be kept for 5--7 months.
Altitude: high altitude area light, clean air, environment close to original condition, no industrial pollution. With an average elevation of 1160-2900m, the central health center has a strong uv light, which produces the natural pollution-free apple, which conforms to the concept of a modern green diet.
Temperature: moderate temperature can avoid the chance of fruit tree encountering disease. The average temperature in ningxia is 8.4 degrees Celsius, which has an important influence on the growth, development, yield and quality of apple. The piedmont apple is thriving in such a good environment.
Humidity environment: moderate amount of rainfall provides necessary conditions for apple's growth. The annual rainfall in the central health region is 186 millimeters. The fruit is slow to grow and the fruit is hard and hard, which fully guarantees the fruit's sugar content and the relatively average size of apples.
Sunshine condition: apple is the fruit tree, the central health area of the whole year is nearly 3,800 hours, is beneficial to the Apple Fruit coloring. The piedmont apples are red and bright.
Temperature difference factors: ambassador apple nighttime respiration weak temperature gap between day and night, consume less organic matter, the accumulation of organic matter during the day more, that apple store down a large number of glucose sugar candy, etc have better taste. The average diurnal temperature difference between apple and apple is 14 degrees centigrade, and the larger diurnal temperature difference ensures the sweet and delicious characteristics of the apple.
Other factors: frost can make apple blossom and fruit, which can cause frozen flower jelly, which is bad for apple's production. The piedmont apple has been kept at least 167 days without frost for the whole year, which minimizes the influence of apple on yield and quality.
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