Techniques for Effectively Increasing the Swallow Flock

In the swiftlet farming industry, it is necessary to prepare a quantity of swiftlet eggs to hatch in the nest of the birds of prey (also known as the nesting method) or artificially incubate the eggs by machine. Bird nest owners can provide nest eggs.

In the wild, people harvest the nest 2-3 times, usually after the bird lays the first time, we take the eggs away, the bird will lay a second time, this discarded egg needs to be collected again to contribute to increasing the population. oats. Eggs must be retrieved after the bird has laid 2 eggs and then the nest is harvested.

Techniques To Increase The Indoor Birds Nest Effectively

Techniques to Increase the Swallow Population

The two species of swiftlets and C.linchi are often close to each other, have many similarities in terms of food types, ecological systems, breeding biology, habitat characteristics… Because of such similar characteristics, humans I thought about being able to let the bird’s nest eggs hatch in C. linchi’s nest, ask this bird to take care of it for a while, then carefully bring it out to raise, have a way to feed it so that the bird can grow up to become a baby bird’s nest. and mature oats.

Another method is to let the eggs hatch and raise the chicks for a while in the incubator. After hatching, the swiftlets are big enough and can fly, move them to the swiftlet’s building, and join the existing flock of swiftlets in this house so that they can fly back and forth with the old flock. In Indonesia, they also use the process of incubating eggs by machine, then bringing the chicks in and asking other birds to raise them for them. This way one can harvest more nests.

Incubating Bird’s Nest Eggs in a Bird’s Nest

For the nest eggs to hatch in the nest, it is necessary to have a sufficient number of these nests and the first thing to do is to replace the decoy eggs with nest eggs. We will do this when it’s time to lay eggs for the C.linchi/esculenta. However, when collecting eggs for hatching by birds of prey, it is necessary to understand the characteristics of the eggs, not to confuse the nest eggs with the eggs of the birds of prey, because these two eggs are very similar. In general, swiftlet eggs are white or slightly bluish, while C.esculenta/linchi eggs are white, with dark spots, like quail eggs. Eggs are placed in egg cartons taken in pairs, swapped in pairs, and the embryo development stage is close to each other.

To assess the quality of eggs, it is possible to do egg screening. The egg screening box is made of cardboard or hard paper, and shines a light through the eggs. While shining the light through the egg, attention should be paid to the condition of the air chamber and of the yolk. Preferably no blood spots. Good eggs, the air chamber is relatively small, stable and not displaced when examining the eggs. After selecting and determining that the eggs are good, put them in the nest of the C.linchi bird.

Eligible eggs: Normal size, discard eggs that are too large or too small. Choose good, unbroken eggs and discard bad quality eggs, such as dirt, water or grease. Dirty eggs usually do not hatch. In order to meet the quiz standards when collecting eggs, it is necessary to give them very carefully and methodically. Do not hold it directly, but use a plastic spoon or tissue. Avoid breaking the egg and getting dirty on it, as this can make the decoy less willing to incubate. Try not to cause a lot of vibrations and collisions when doing it. Eggs should be replaced during the day, when the birds of prey fly out of the house to feed. Thanks to the bird’s nest incubating the bird’s eggs, we will receive a series of baby swiftlets, the birds will learn to fly and gradually fly out to find prey.

The next step is to arrange the decoy house to become the home of the white nest. The time when the bird of prey stays in the house is about 30-40 days. In order for the decoy to leave the house, any unnecessary doors should be closed to darken the room and then disturb the decoy, as this bird prefers to be in the light and it will fly out of the house. Because the indoor climate conditions are suitable for white nests, they will stay in that house. At this time, we need to try less to get close to the nest, because we can make it fly out of the nest.

Effective Egg Incubation Techniques

How to choose standard nest eggs

Good eggs:

Eggs are intact, not cracked, not wet.

The surface is smooth, not bulging and the shape is not too long.

These eggs look new, clean and completely free of any kind of liquid material, such as yolk fluid from broken eggs, because these fluids clog the breathing holes in the eggshell.

Egg quality and hatchability of nest eggs

 

Good egg quality is a prerequisite for high hatching and chick survival rates. Good quality eggs are those laid in a clean environment, properly collected, stored and transported in good condition. When returning eggs, they can be in the following conditions:

Fresh unincubated eggs are pale pink and clear, the air is clearly visible at the blunt end, if their air chambers have grown to 1/3 of the egg volume, discard them because those are old eggs with low hatchability.

  • Advantages:  These eggs stay fresh longer at room temperature than incubated eggs, so we don’t have to rush. They can be kept for 2-4 days.
  • Disadvantages:  Having rate is only 50%, as not all eggs are fertilized. Some eggs fail to fertilize because egg development is out of sync with the mating season. It takes about 23 days for the eggs to hatch.

Eggs that have been incubated for 1 week by birds are white and not clear, so gas cannot be seen.

  • Advantages: hatching rate is about 90% or more, surely these eggs are fertilized and their embryos have developed, because they have been incubated for about 1 week by birds, so the time for eggs to hatch is shortened.
  • Disadvantages: these incubated eggs have a short maximum lifespan (about 24 hours). So there needs to be a special way to transport them to the birdhouse. If they can be put into incubation after a while, they must be kept in a dedicated incubation box for nest eggs.

Eggs that have been incubated for 2 to 3 weeks are opaque white and blackish in color, and the air chamber is completely invisible.

  • Advantages:  Hatching rate is about 90% (most hatch), because their embryos are fully developed. Since these eggs have been incubated for 2-3 weeks, they only hatch within 1-7 days.
  • Disadvantages:  Sometimes some eggs hatch during shipping, so the faster shipping the better. The chicks can only live without food for 24 hours after hatching. If the nest egg has been incubated for 2-3 weeks without hatching, it is necessary to pay attention to the appropriate standard temperature.

Classification of nest eggs

Depending on the harvest of the nest, the mid-autumn eggs can be at many different stages of development, from the time of birth to the time of hatching. And because the hatching conditions of each stage are different, classification must be carried out.

Make a homemade wooden or cardboard egg screening box with an electric bulb, allowing light to pass through a hole small enough to place the eggs in. After that, the white and non-embryo eggs are removed, the embryo dead eggs have a dark spot and keep the good eggs. In practice, it is possible to divide good eggs into 3 types: Unincubated eggs after laying about 0-5 days, eggs incubated for 1 week about 6-10 days, eggs incubated for 2-3 weeks about more than 10 days.

The classification is carried out at room temperature of about 32 – 34 degrees Celsius. In the case of classification for storage, it is carried out in a cool room.

Incubate eggs with an incubator.

The incubator is a small incubator with automatic temperature control, can be used to incubate quail eggs, or buy a specialized type for incubating nest eggs, initially choose the type that can stack about 100-200 eggs. , or make your own in the model of a handmade quail incubator. This type of cabinet has the convenience of low energy, can set the hatching mode for different development stages, so that the chicks hatch at the same time, convenient for care and more importantly, to master the incubation technique. artificial farming.

Self-made cabinets need to ensure 5 technical standards: temperature, humidity, ventilation, air circulation, convenient egg turning, installation of automatic, semi-automatic or manual island racks. Homemade incubator can use electricity, has a small fan to circulate air, the holes with the outside are arranged reasonably… In fact, this homemade cabinet is very cheap, has high efficiency and is easy to make.

Sterilize the incubator

It is necessary to clean and disinfect the incubator, incubator, utensils (egg tray, foam sheet, paper box, cardboard, pince bird feeder, petri box, blu shirt, mask, tissue paper) , feeding utensils, spoons for children…)

Daily cleaning and mopping with Crezin 3% (3ml Crezin + 97ml H2O). Instruments, tables and chairs need to be cleaned with Desifecto 14ml in 1 liter of water. Disinfecting the incubator is very important, to eliminate all pathogens available in the incubator: Mix 6 grams of KMnO4 in 12-15ml of formalin solution in 1 cubic meter of the incubator room. The above two substances are mixed in a crockery or glass pot, with a glass stirring rod. Next place this pot in the place near the fan of the incubator. Close the incubator for a number of hours, then remove the pot. Doing it this way will ensure that there are no pathogens in the machine.

In the hatchery profession, it is recommended to equip an ultraviolet lamp with a sterilization step to disinfect food and drink … for young birds.

Prepare eggs and put them in the incubator

Egg screening, remove non-embryo eggs, poor quality eggs, damaged eggs. Choose good eggs, sort eggs as above, arrange them on egg trays, usually perforated foam sheets, different or different rows. Eggs are arranged obtusely at the top, which can be tilted or straight depending on how the eggs are rotated and arranged in rows. Before the eggs are inserted, the eggs must be warmed to ambient temperature.

  • Place the sorted egg trays in different incubators or different floors of the same machine.
  • After placing eggs in the incubator, the door of the machine room needs to be closed and only opened when turning eggs and checking temperature and humidity.

Nest egg incubation mode

Temperature and humidity: in the incubator set natural thermostat mode. The humidity in the machine is controlled by water trays, and there is a humidification mode in the incubation room close to the ventilation hole.

The appropriate temperature in the incubator varies from 37.5 to 39 degrees Celsius, humidity 65-75%. The temperature and humidity regime depends on the stage of embryo development. With eggs that have not been incubated by birds, in the first week, the high temperature can be at 38 – 39 degrees Celsius. During the development process, there is a gradual decrease in temperature, especially in the last week when the embryo is quite large and gives off a lot of heat. , the incubator temperature is about 36.5 – 37 degrees Celsius; On the contrary, the humidity in the first 2-3 days can be 60-65%, the last half is higher and at hatching should reach 70-75%. Idling to check the environmental conditions in the incubator in terms of temperature, humidity, oxygen… how to make these conditions stable and optimal.

Eggs must be turned frequently so that the light embryo does not stick to the shell and increases the metabolism of yolk and white in the embryo. At least turn the eggs 3 times / day, maybe 2-3 hours 1 time. The turning of eggs is very important, especially in the early stages with young eggs that have not been incubated or incubated for 7-10 days. Eggs need to be turned at a 90 degree angle, which means 45 degrees in each direction. You can do the egg turning by reversing the direction of the high sponge on each side. The inversion of eggs is done until the 12th day, from then on, there is no need to turn anymore, until hatching, about 3 days before hatching, at this time the embryo has not stopped moving in the egg. Imported eggs usually have been incubated for a while, so the effect of egg turning is not obvious.

Ventilation and air circulation will both increase oxygen, clean air and release excess air, reducing the amount of CO2 generated during egg metabolism, so a small fan is needed to transfer heat evenly. and create transparency. The ventilation during incubation is to provide oxygen but also to release three important factors: carbon dioxide, steam and heat.

During mechanical incubation, the incubator should not be opened, except to turn the eggs, add water and adjust the humidity. When opening the incubator, the temperature and humidity will drop. In that case, the indicator light will automatically turn off until the temperature in the incubator’s room is stable, then the light will turn on again.

Because most eggs are collected when the embryos have been incubated for 1 week, the incubation time in the machine is usually about 13-15 days for the eggs to hatch.

There are regularly on duty to ensure the temperature in the machine is stable as required. Full logbook of experimental data is available.

Transfer eggs from the incubator to the hatching tray: Birds can be hatched right on the foam, a few hours later they are transferred to small boxes with foam liner for easy feeding and care or immediately put into a fake nest , still in the incubator for a few days, and then transferred to the hatching box.

However, when the eggs are close to hatching, they can also be transferred to another hatching tray, the hatching tray is made of cardboard, because the baby bird’s nails are very sharp, so if it is left to hatch on the foam, it will be vulnerable when taking the bird out. In addition, because there is no need to feed the birds immediately for about 24 hours, we can wait a certain time, not opening the incubator door to let a number of eggs finish hatching. At this time, if the cabinet is regularly opened and the temperature and humidity change, many eggs being shelled will not continue to hatch and the hatching rate will decrease. Even if the eggs have made a small hole and the chirping of the chicks is heard, if the incubator is left open for a long time and often during this time, the hatching process may stop. After the birds hatch, the eggshells need to be cleaned.

The artificial incubation rate of bird’s nest eggs is quite high, can reach 80-90%. The chicks are kept in an incubator for a number of days on this tray or in artificial nests with chicks placed on the tray, without touching the birds and slowly feeding them 3 times a day. When the chicks are stronger, after 3-4 days, we will move the fake nests with the birds to the incubator at a lower temperature, to make it easier for the birds to eat, and continue to raise the birds in the incubator.

Preserving bird’s nest eggs

It is also an important step in the hatching process, which is related to the hatching rate and the quality of the chicks later on. Preservation of eggs is performed in case the measured number of eggs has not been brought into the incubation room or incubators and must be kept for a while. Egg preservation is usually done with unincubated bird eggs.

As a general rule, the embryo of newly laid eggs will develop 24 hours after laying and stop growing below 24 degrees Celsius, so it should be cooled within 6 hours after laying. So hit must be moved to cool room as soon as possible.

Preservation time: in fact, unincubated swiftlet eggs can be kept for 2-4 days at room temperature, and eggs that have been incubated can only be kept for 24 hours. If you want to store unincubated eggs for a longer time, it may be necessary to lower the temperature to a certain level. There is no clear, complete, and really reliable document on preserving bird’s nest eggs, this is a topic that needs further attention.

Eggs are arranged with the small end below the large end with the air chamber up and arranged at an angle of 45 degrees or horizontally. During storage, turn the eggs 1-2 times a day to help the yolk move towards the air chamber. When preparing to put in the incubator, it is necessary to take the eggs out of the storage room for a few hours to awaken the embryos, and the temperature should be increased slowly so that the eggs do not suddenly become cold and hot, causing embryo death. The humidity in the storage room is about 70%. If the humidity is too low, the egg will lose water, if it is too high, it will create conditions for bacteria to penetrate the egg. The storage room must also be hygienic and disinfected first.