Techniques for Raising Dong Tao Chickens Successfully

Dong Tao chicken or Dong Cao chicken is an endemic and rare chicken breed of Vietnam, nowhere in the world. The outstanding feature of this type of chicken is the ugly legs, the big and rough legs, when grown up can weigh over 4.5 kg (rooster) and over 3.5 kg (hen). So how to successfully raise outstanding chickens with this wonderful breed. Let’s find out with BSF Smart Farm.

A Guide to Raising Dong Tao Chickens With Great Success

What is Dong Tao Chicken?

Dong Tao chicken is a traditional chicken breed of Dong Tao commune in Khoai Chau district, Hung Yen province, in the past, people used to use it to make sacrifices and festivals, or to advance to the King[1]. Dong Tao chicken belongs to the list of rare and precious poultry breeds of Vietnam currently being preserved genetic resources.

Outstanding Features

Chickens are big chickens, with a dignified shape, with a big body, red skin, a majestic head, and strong legs. The Dong Tao rooster has two basic feather codes including plum code (purple and black) and plum color. Chickens also have rough legs, big rooster legs and around the legs in front is a layer of skin scales arranged not in rows, the rest (3/4 of the area) has rough skin like the surface of a mulberry fruit. , four toes spread out, clearly divided toe, thick, well-balanced feet, so the chickens walk firmly- The crest of the rooster is the crest of the sun (short and elastic) burgundy, the ticks and earlobes are red, poorly developed. grow, look slim and healthy. Hens have three basic codes including: code banana – light yellow, mahogany or light brown – earthy color or dried banana leaves, ivory code – milky white. The feathers on the neck and wings of hens often have a mixture of yellow, milky white, reddish brown, and black feathers. Hens also have a crest similar to that of a rooster, but only one-third as large as a rooster. The hairless skin areas on the cock (both cocks and hens) are red.

  • Newborn chickens have white feathers. Newly hatched weight 38-40g, slow hair growth, adult male weighs 5.5-6kg, female weighs 4kg/head. Delicious, sweet chicken with red and pink breast meat, thigh muscles with rolling muscle bundles squeezed together in meat without tendons, not tough.
  • The largest purebred Dong Tao chicken farm in Vietnam is currently located in Dong Tao commune, Khoai Chau district, Hung Yen province. Dong Tao chicken is a very fastidious species, not used to being kept in captivity, used to running and jumping, so the barn must be spacious, so the quality of the meat is delicious and firm. It takes a year to a year and a half to raise in a free-range environment, eating natural bran does not promote growth, then chickens can produce meat.

When mature, Dong Tao chickens can weigh from 3 to 6 kg. Besides, they often lay fewer eggs than normal chickens, the clumsy big legs make the chickens hatch very clumsy. Chickens start laying at 160 days old. If the hens lay and then incubate themselves, 10 months lay 70 eggs. Egg weight from 48-55 grams/fruit.



How to Choose Purebred Eastern Tao Chicken

What are the characteristics of purebred chickens?

Currently, on the market, there has appeared a new line of chickens bred from Dong Tao chickens, which is a hybrid Dong Tao chicken. This line of chicken has very good meat because it inherits some nutritional properties like purebred Dong Tao chicken. This line of chickens is easier to grow in number than many purebred chickens because they lay a lot and also know how to incubate their own eggs. However, due to the relapse, many outstanding characteristics of Dong Tao chickens can no longer be preserved. These differences will be very evident as the chickens get older. Adult purebred Dong Tao chickens weigh 3.2kg or more while hybrid chickens are only about 2.5kg. Purebred chicken feet are as big as the big toe or more, rough and have a lot of meat, while the largest hybrid chicken legs are only the size of a thumb and have little meat. So when the chicken is young, how to detect it?

Some experiences to distinguish purebred chickens:

How to see chickens under 1 month old: they are so similar that it is difficult to distinguish. Therefore, to ensure that those who have needs should buy at reputable establishments.

How to see chickens from 2 months to 3 months old: this is when the legs begin to have a major difference in color. Purebred frozen chicken feet are redder. Hybrid chicken feet are often yellow in color. There is not much difference in the size of the legs at this time. Only some purebreds have larger legs. In terms of skin color, we can see purebred chickens redder than hybrid chickens. In addition, the purebred seaweed chicken has more thickness (body width).

How to see chickens over 3 months old: now we are not difficult to distinguish anymore. The legs, skin color, body shape and crest were very different. Purebred chickens were able to reach a weight of 1.5kg/head

How to raise purebred chickens

Breeding form:

We can raise chickens on an industrial scale or in a garden. But it is best to raise it in the garden because frozen chickens are very active chickens, they will be the largest when they are raised in the garden and raised in the garden, the quality of meat will be better, the chicken will be bigger.

Notes when building a barn:

– The coop for chickens to sleep must be warm enough, not waterlogged. It is best to build a platform higher than the ground and put rice husks in to make a place for chickens to sleep.

If raising in captivity, people should arrange feeding and drinking troughs equally.

– Clean the barn clean to avoid disease. People can use disinfectants available at veterinary pharmacies to spray – spray, disinfect once every 2 weeks.


Value of purebred frozen chicken

Because purebred chickens are rare and precious chickens that are considered to be king products, the price of adult purebred chickens is quite high, priced from 1 million, 3 million, even several tens of millions. The most typical is the purchase of a pair of purebred chickens from a rich man in Saigon for 70 million.

For chicks, the cost of chicks is from 100,000 to 1 million VND depending on the date of age.

Techniques of Raising Dong Tao Chicken

  1. About the nursery: no need to be wide, just the area as follows: 2m long – 1m wide – 0.5m high is enough to raise 100 frozen chicks. It is necessary to disinfect the coop 3-7 days before putting the frozen chicks in. Designed to shield the direction of drafts, easy to clean the barn.
  2. About temperature: very important, the principle of raising chicks with frozen chicks is to create a heat source  (using a 100W bulb with the area of the brooding house mentioned above) from the beginning to ensure the same temperature as using a mother chicken. brooding chicks. If the chicks are frozen with newly hatched algae in the first weeks of lack of heat, the chickens will become weaker and have a high mortality rate.

During the rearing process, it is necessary to pay attention to observe the reaction of the frozen chickens to the temperature:

  • Lack of heat (still cold): Frozen chickens gather near the heater, jostling, overlapping each other close to the heater, chirping continuously.
  • Suffering from drafts: Frozen chicks clustered together on one side are drafted through the heating hood, very dangerous and need to be covered because chickens are drafted or infected with respiratory tract.
  • Excessive heat (too hot): The flock of chickens is far from the heat source, noisy, thirsty, open beak to breathe, drink a lot of water.
  • Enough heat: Frozen chickens are evenly dispersed on the floor, agile.

3. About food: Use bran for frozen chickens. Just note:

  • The 1-day-old chicks are usually not fed, but only drink water. If feeding chickens immediately and especially with a lot of protein, the indigestible volume of yolk in the abdomen will cause chickens to die easily in the first week.
  • Do not use old, long-lasting food.
  • Do not use poorly preserved food.

Preparing to Raise Dong Tao Chicken

A. Prepare equipment for cages – tools for raising chickens with algae

– Curtains: Long curtains can be used to completely cover the cage or mezzanine blinds only cover the part with the cage.


– Chicken cage:

+ With frozen chicken, you need to prepare the following:

* Frozen chicken 1 month old: must ensure 10 chicks / 1m2. See more at Dong Tao Breeding Chicken Cage

* Dong Tao chickens spawn: Must ensure the minimum area of 1 chicken / 1m2. See more at Dong Tao Chicken Breeding Coop

– Feeding and drinking troughs: long metal or plastic troughs. The trough is placed along the barn length. at the front (drinking trough above, feeding trough below). Standard 10 cm trough length for 1 chicken.

You can prepare more: Microbiological preparations for incubating garlic in livestock BIO ST and BIO BSF hydrolyzed larval protein solution.

B. Cleaning and disinfecting stables and livestock equipment:

The following steps should be performed:

– Remove the old curtain, bring it to an area far from the nurturing place for processing.

– Wash the entire cage, cage, curtain, feeder, and drinker, then let it dry and spray disinfectant on the ceiling, walls of the cage, cage, feeder, drinker, and area around the cage with disinfectant solution. Stork, or formol 2% dose 1 liter/m2. Then, leave the cage empty for 7 to 14 days.

Cleaning operations should follow the following sequence:

– Take all small equipment out and soak in water. Brush clean dirt.

– Disinfect with disinfectant.

– Leave the barn empty.

Arrange a disinfection pit in front of each cage. Limit visitors, anyone entering the barn must change into clean clothes, wear shoes and hats of the breeding place.

II.Technology of rearing Dong Tao chickens:


Chicken stage from 1 day old to 18 – 20 weeks old: This is an important stage, decisive to the development and reproduction of chickens later. Raising chickens with the right method of laying at the right time, the eggs will be large, the yield will be high, and the quality of the seed will be good.

Breeders must pay close attention to the following two technical requirements:

– Feeding regimen reaches the prescribed weight (always check the chicken weight).

– Appropriate lighting mode for laying hens at the right time.


Chickens must be fed with good quality feed and the correct diet according to the stage of development of the chicken. To meet that requirement, farmers should use Con CoC25 concentrated feed or mixed feed Con CoC26, Con Coc27 of CTy Cattle Feed Con – Stork used for gilts.

Usage is as follows.

Chickens from 1 week old to 9 weeks old:

Feed used at this stage is mixed bran Con CoC26 or Con? stork

C21. Con CoC25 concentrated bran is mixed according to the following ratio: In 100kg of mixed bran, there are 32% Con CoC25 bran, 53% corn, 10% broken, 5% rice bran. During this period, the chickens eat freely and do not need to monitor their weight, but at the 9th week, the chickens must eat well? 52g/head/day of mixed bran or mixed bran and chickens must reach the prescribed weight of 730g/head.

Chickens from 10 weeks old to 19 weeks old:

During this period, attention must be paid to the uniformity of the chicken’s body weight. Therefore, the feed must be distributed evenly for the whole flock to eat the prescribed diet to avoid the phenomenon of chickens eating too much, or too little. Chicken feed at this stage is banned Con Coc27 mixture or Con Coc25 concentrated bran. Con Co bran used in this period is mixed as follows: In 100kg of mixed bran, there is 26% C25, 34% is corn, 25o/o is milled rice, 15% rice bran. Chickens in this stage are fed diets with varying amounts depending on the week. This quantity gradually increased and reached 85g/head/day Con CoC25 mixed bran was mixed according to the above ratio. The standard weight set for 1g week old chickens must reach 1 620/head.




Check the weight gain of pullets:

The basic technique of raising gilts is to not be too fat as well as too thin. Need? must closely follow the weight norm for each age period.

Steps to take:

– Arrange enough feeding troughs, drinking troughs and prescribed density for chickens to grow evenly.

– Weigh the chickens once every 2 weeks (10% of the total flock). Weigh on an empty stomach and fix the time. From the results of body weight checks to divide the flock and adjust the feed, if the chicken’s light weight is 95% of the standard weight, the feed rate for the next week must be used.

– Lighting mode:

Lighting mode helps chickens to mature sex on time, lay wrongly and maintain laying performance. Lighting time per day for pullets:

– Chickens 1-2 weeks old: Showtime 24 hours a day.

– Chicken 3 -7 days old: Show time 23/24 hours

– Chicken from week 11 : Show time reduced from 22/24 to 13/24 hours.

– Chickens from 12-18 weeks old: use natural light.

– Chickens from 19-22 weeks old: Lighting time from 13/24 hours to 16/24 hours and maintain this lighting time throughout the laying period. The light intensity used is 4w/m2.

III.Technology of laying hens.


* Types of food

Refer to the method of raising black soldier fly larvae as food for chickens.

-Chickens from the 20th week, laying fortune-telling eggs to culling (74 weeks). Feed at this stage chickens eat the feed of laying hens and the norm of laying hens. The norm gradually increased to 26 weeks, the amount of feed reached 120g/head/day. The best feed for laying hens today is a mixture of Con Co C24 or Con Co C21 concentrated bran or Con Co 210 concentrated bran (of Con Co Cattle Feed Company),

– Chicken from 20 weeks old: Use Con Co C210 bran, mixed according to the following ratio: For every 100g of mixed bran, there are 37% C210, 23% corn, 40% rice bran or mixed with 33% C210, corn 40%, rice bran 25%.

-Chickens over 40 weeks old: Use Con Co C210 bran and mix as follows: Every 100kg? Mixed bran with 33% Con CoC21 bran, 27% corn, 40% rice bran.

* How to feed chickens; For mixed feed or mixed bran, mix the trough evenly, stir the feed at least 2-3 times a day so that the feed is evenly distributed in the trough to stimulate the chickens to eat more.

Feed rations should not be reduced when the laying rate of chicks is high, only when? the birth rate dropped. Feed chickens 2 times a day: 1st time: 75% feed in the morning, 2-3 times 25% in the afternoon.

* Drinking water must always ensure the quantity of 250ml/fish, always clean and cool at 26 degrees.

* Maintain lighting mode 16 hours/day.

Lights up at 4-6 o’clock in the morning

16 – 1 8 hours of natural light.

18 – 20 hours of light.

The light intensity was maintained at 4w/m2 for the whole calving period.


In the rainy season, not only chickens are frozen or any chicken breeds, disease is easy to break out and spread on a large scale. Today  Thu Ha Seed Farm would like to give some information about common diseases in the rainy season. including signs of recognition, prevention and treatment for Dong Tao Chicken.

Newcastle disease (chicken cholera)

Paramyxovirus is an RNA virus that causes disease in chickens of all ages, characterized by bleeding, gastrointestinal ulcers. The disease spreads rapidly, causing serious damage, up to 100% of infected chicken flocks.

Viruses are easily killed by common disinfectants but can survive for many years in a cool environment. The disease is spread mainly through the respiratory tract, gastrointestinal tract, by contact with infected chickens.

Disease symptoms:

The incubation period is usually 5 days, but can vary from 5 to 12 days.

Over-acute form:

Usually occurs at the beginning of the outbreak, the disease progresses quickly, the chickens become moody after a few hours and then die, without showing any symptoms of the disease.

+ Acute form:

Chickens are moody, eat less, drink a lot of water, feathers are ruffled, chickens have a high fever of 42-43oC, sneezing, runny nose, severe shortness of breath, bruised crest and bib, runny nose.

In adult chickens, respiratory symptoms are not as obvious as in broiler chickens. In laying hens, egg production decreases or stops laying completely 7 to 21 days after infection.

Chronic form:

Occurs at the end of translation. Chickens have neurological symptoms, motor organs are severely damaged. The animal turns its head back, walks backwards, circles, pecks the wrong food, convulsions often occur when stimulated. With good care, chickens can recover, neurological symptoms remain, and chickens recover from lifelong immune diseases.


Currently, commonly used vaccines produced by the TW II Veterinary Medicine Company, the vaccination schedule is as follows:

– Newcastle vaccine F-type used eye drops for chickens at 3 days of age, repeat the second time at 18-21 days of age.

– For the 3rd time, Newcastle disease vaccine M, administered subcutaneously to chickens at 2 months of age, then repeated every 6 months.


There is no specific treatment. Should supplement vitamin C and vitamin B group, preparation K.C- Electrolyte, improve feed rations can reduce mortality in the late stage of the outbreak.

Chronic respiratory disease


The disease is caused by the bacterium Mycoplasma gallisepticum. The disease does not cause rapid and numerous deaths, but slows growth of chickens, reduces laying, and incubates diseased eggs, causing embryo death. The disease is spread through the respiratory tract and genital tract. When chickens recover from the disease, they carry the disease for life, so it is called chronic respiratory disease.

Chickens 2 – 4 months old are most susceptible to the disease, chickens raised in industry or at high density are more susceptible to disease than chickens raised at home, with low rearing density.


The disease usually occurs in the winter, the roosters are usually mildly infected, the disease rate is up to 100%, but the mortality is very low. The disease is often more severe when infected with other diseases such as Newcastle, infectious bronchitis and E.Coli, the death rate can be up to 30%.

– The mucous membranes of the eyes are red, congested, lacrimation, thickening of the tears, thickening of the corners of the eyes, accumulation of more and more fibrin, forming pea-sized masses in the eyes that can make chickens blind.

– Rhinitis, runny nose, at first dilute, then thick with milky white color clinging to the corners of the nose, causing chickens to suffocate.

– The walls of the sinuses, especially those under the eyes, swell, making the chicken’s face deformed. This is a typical symptom of the disease.

– Throat mucosa, most of the air sacs are inflamed, making it difficult for the animal to breathe, the crest and bib are bruised, exhausted, and then die.

In addition, some chickens have arthritis and synovitis. There are also some cases of chickens with neurological symptoms. Infected eggs, the embryo dies before hatching, usually about 10 – 30%.




MG can be used to prevent chicken diseases by subcutaneous or intramuscular injection. But to implement the vaccine prevention process, the hatchery must receive eggs from chicken farms that are tested to be free of disease. Therefore, the prevention with vaccines proved not to be economically viable, but we should use antibiotics specifically for chickens within 10 days of hatching.


You can use powdered antibiotics mixed in food or drinking water continuously for 3-5 days:

Anti-CCRD Plus: Mix 2g of drug with 1 liter of water for chickens to drink.

ETS: 1g for 2 kg body weight/day.

Tylenro 5+5 : 1g for 3 kg body weight/day.

Vimenro: 10g pack for 15-20 kg body weight.

Or injectable antibiotics to treat poultry:

Tylenro 5+5 :1ml used for 5 kg body weight/day.

Genta – Colenro: 1ml for 5 kg body weight/day.

The above antibiotics are injected continuously for 3-5 days.

In addition to using antibiotics to treat poultry diseases, the addition of electrolytes and vitamins is also essential, which can be used:

Vimix Plus: 1g mixed for 1 liter of broth continuously for 3-5 days.

Aminovit : Pack of 100g for 500 liters of drinking water continuously for 3-5 days.

Vitalal: 1ml for 1 liter of broth continuously for 3-5 days

Chickens with coccidiosis: often moody, poor appetite, drink a lot of water; Next is diarrhea, mucus because the intestinal mucosa is peeled off. After a few days, the stools are fresh or brown in color. Without timely treatment, chickens die after 3-5 days with a rate of 40-60%. Treatment: Dilute 0.2g esb3 (which is a pharmaceutical chemical with crystallization like diameter, soluble in water) with 0.1l of water, for 3-4 days. Prevention: Mix 0.1g of the drug with 0.1l of water, give chickens 2-3 days/week, use it for 2-3 weeks. Sanitize, disinfect the barn, give enough nutrition and vitamins A, D, E, C, B1.

Chronic respiratory disease (CRD): Usually occurs when the weather changes and the humidity is high. Pathogens from sick chickens will come out through the breath, nose, and urine of chickens, and spread through the respiratory tract. The sick chickens eat poorly, are moody, have watery eyes, runny nose, and have difficulty breathing. Treatment: Tylosin: powder 98%: 0.1g mixed with 2l water, drink 3-5 days. Tylosin injection for chickens at a dose of 20-25mg/kg body weight of chickens, used for 3-5 days. Or Tiamulin powder, 1-1.5g mixed with 1l of water, drink 3-5 days. Or mix in food: 20g/100kg feed. Tiamulin is in the form of injection, mixed 0.1ml with 0.4ml of distilled water, injected 3-4 days.

Chickenpox: chickens 1-3 months. Chickens have small, red, green pea-sized spots on the cheeks, near the nostrils, near the eyes, on the crest or on the skin of the thighs, corners of the wings of the chicken. The bean nodules grow to become large, succulent yellow-white, then break off, producing brown, flakes. Beans also often grow in the nasal mucosa, in the chicken’s mouth and in the eye conjunctiva when broken, causing the chicken to die. Treatment: Bleu-Methylene (5%o), iodized tincture applied to the pox daily; Drop a solution of Chloramphenicol – 4 %o on the chicken pox, into the eyes, mouth, and nose for the chickens to kill the bacteria causing secondary inflammation. Prevention: vaccination.

Anti-Heat Measures for Dong Tao Chicken


Hot summer, environmental temperature above 35 degrees Celsius is one of the unfavorable factors in livestock production, especially concentrated breeding, high density Dong Tao chickens often eat, sleep poorly, are sick, and lose weight. by electrolytes, leading to metabolic disturbances.

Due to the reduced resistance, the yield of meat, eggs and milk is reduced, diseases such as diarrhea, dysentery, E.coli, paratyphoid, pneumonia, cholera, coccidiosis, coccidiosis, etc. birth, spread, cause death and cause significant economic losses to livestock production facilities.

To limit the negative effects of heat stress, in addition to the cool barn factor and the anti-heat fan device, people need to pay attention to the following things:

Farming density

Dong Tao chickens brood 50-60 chickens/m2, broiler chickens when they mature into 2 chickens/m2, breed chickens, laying hens 1 chicken/m2. Because chickens with algae are familiar with the custom of raising land and are sensitive to hot weather, people need to pay attention and have more perches for chickens. The number of feeders and drinkers also needs to be increased…


On hot days with high temperature and humidity in the coop, Dong Tao Chicken has to cope with adverse microclimate conditions… Therefore, special attention should be paid to nurturing care.

Increase green diet such as fresh vegetables, fruits and vitamins, especially vitamin C.

Increase Green Vegetables, reduce starch

Increase feeding at night or early morning or cool afternoon; Limit feeding during the day, especially at noon, when it’s hot…

Regularly provide sufficient clean and cool water for Dong Tao Chicken to drink, but do not wet the floor of the coop.

Take care

Add more trees to create a canopy for chickens to avoid the sun.

Limit disturbance of chicken flocks on hot days.

Strengthen resistance

To prevent heat stress for frozen chickens on hot days, it is necessary to add to B-complex drinking water, a mixture of vitamins, especially vitamin C, and electrolytes (such as vitamin C AT111, Multivitamin AT 112, Acid- Pak-4 Way…) or salt water with a concentration of 1% (10-15g salt/liter of water).

Hygiene of the hospital

Strengthening cleaning and disinfection of barns, equipment, padding, tools for livestock, changing the padding used in the previous heat wave, periodic disinfection, early detection of diseases for Dong Tao chickens.

-Here are some measures to combat the heat of frozen chickens, wish you good breeding

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