CATDOLL : CATDOLL: How to prevent Escherichia coli disease in laying hens?

1. How to prevent Escherichia coli disease in laying hens?

Escherichia coli disease in laying hens is a type of disease caused by certain serotypes of Escherichia coli, mainly including Escherichia coli sepsis, yolk peritonitis, Escherichia coli granuloma, etc. If not treated in time, it will cause significant economic losses. Prevention and control measures 1. Strengthen the control of egg contamination: egg transmission is an important way of transmission of this disease. Eggs should be collected and fumigated in time in the breeder farm. Eggs with serious contamination should not be selected as breeding eggs. Breeding eggs with mild contamination on feces can be scraped clean with a blade, but must not be washed with water. 2. Choose safe and effective opening drugs: Drink drugs that control Escherichia coli and mycoplasma for 4 consecutive days after entering the chicks. One-stop enterprises with conditions should screen weak chicks in the hatchery and isolate Escherichia coli for drug sensitivity experiments. Strive to use highly sensitive, low-toxic and side-effect, and high-bioavailability drugs as opening drugs, which is of great significance to the control of Escherichia coli disease in chicks. If there is no condition to conduct drug sensitivity test in chicken farms, you can choose Jinmeikang (silver yellow soluble powder) or Yimeiqiang (ciprofloxacin soluble powder), each of which is diluted with 200 kg of water for every 100 grams, and drink it twice a day, 3 to 4 hours each time, for 3 to 5 consecutive days. 3. Strengthen health management: Feed, drinking water, and air are the main transmission media of this disease. The treatment of feces and the disinfection and purification of chicken house air should be strengthened.

Remove feces, clean the chicken house effectively, and insist on using 1:400 times Haoyijie (Povidone Iodine) with chicken spray for disinfection. Clean the water tank and water supply pipe regularly, especially after the soluble powder medicine is applied. The drinking fountain should be cleaned at least once a day. If the number of bacteria in the drinking water exceeds the standard, it can be eliminated with 1:2000 times Haoyijie (Povidone Iodine). I hope my question can help you!

2. What is the number of laying hens in Henan?

Answer: As of the end of February, the number of laying hens in Henan was around 139 million, a month-on-month increase of 1.46% and a year-on-year decrease of 7.02%.

The newly laid laying hens in Henan in February were mainly chicks that were added to the stock in September and October this year. The sales volume of chicks decreased by 3.16% month-on-month in September and 3.13% month-on-month in October, both of which were lower than normal levels.

Judging from the situation of culling chickens, most slaughterhouses were shut down during the holiday, the farmers' market was sluggish, and the number of culled chickens decreased. Overall, the number of culled chickens this month was less than the number of new laying hens, and the number of laying hens in stock increased slightly.

As of the end of February, reserve hens aged 1-119 days accounted for about 16.00% of the total laying hens in Henan Province, laying hens aged 120-449 days accounted for about 76.10% of the total laying hens, and old hens over 450 days accounted for about 7.90% of the total laying hens.

Egg prices were consolidated at a low level during the month, but feed prices continued to rise. Most breeding units were in a loss-making state and were cautious about the future market. Some of them replaced old chickens after eliminating them, and the proportion of reserve chickens under 120 days of age increased slightly. The number of old chickens slaughtered during the month was not large, and the proportion of old chickens over 450 days of age increased.

As of the end of February, small-sized eggs accounted for 10% of the Henan market, medium-sized eggs accounted for 41%, and large-sized eggs accounted for 49%, with little fluctuation compared with the previous month. There were not many newly laid chicks this month, and the proportion of small-sized eggs did not change much, with most regions around 10%, and there was limited room for growth in the future. The number of culled chickens decreased, the proportion of large-sized eggs increased, and the pressure on shipments increased.

The inventory days in production and circulation are at a relatively high level

As of the end of February, the inventory days in the production link in Henan Province were around 1.35 days, and the inventory days in the circulation link were around 1.30 days, which increased from the previous month. The terminal demand was low during the month, the operating rate of food factories was low, the inventory in many places increased slightly, the domestic and foreign sales in the market were weak, and the inventory days were relatively high.

In the short term, although the demand side has slowly recovered after the holidays, the egg market is in a relatively off-season, and the overall purchasing enthusiasm in the sales area is average, and most of them are sold as soon as they are harvested. However, considering the support of the current low inventory and the high feed costs, it is expected that the risk of further decline in Henan egg prices is not great, and there may be a trend of slow rise from a low level in March.

3. How to eliminate sick laying hens?

Hello, I’m Qinggege. Infectious disease is a disease that seriously affects the health of laying hens. Let me answer this question below!

In the process of laying hen breeding, some diseases often occur, such as Newcastle disease, white diarrhea, etc., but they are difficult to treat. At the same time, the most serious disease that also affects the egg production of laying hens is infectious bronchiolitis. Only by effectively preventing and controlling infectious bronchiolitis can laying hens grow healthily, ensure the egg production of laying hens, and ensure that farmers do not suffer losses.

Infectious bronchitis in laying hens is a complex disease caused by infectious bronchitis when the chicks are young, that is, it is a sequelae of renal bronchitis and proventriculitis that infringe on the reproductive system of laying hens.

For laying hens in the egg-laying period, the development of the ovaries and oviducts has stopped or slowed down when they were chicks, and they show this symptom at the peak of egg production. At this time, treatment has lost its due value. Laying hens in this situation should be eliminated according to their egg-laying situation, and effective drug treatment can no longer be used.

For laying hens with an egg production rate of more than 50%, it means that the reproductive system of the chickens is not fully developed. Some Chinese medicines that promote the development of the reproductive system can be used to promote further development of the reproductive system of laying hens, but it takes 15 days of treatment, which is 2 cycles for the eggs of laying hens to mature. Add compound digestive enzymes to the feed of the whole flock of chickens to enhance the digestive function of the digestive system. Chickens that still cannot achieve an effective egg production rate after promoting the development of the reproductive system need to be picked out and eliminated.

The main methods to prevent laying hens from transmitting the virus are as follows:

1. Ventilate the chicken house, adjust the protein in the feed, and add kidney-clearing medicine to the drinking water. Chicks, feed, management, chicken diseases and other factors will affect the egg production of laying hens, especially if the weight and uniformity are not up to standard, and diseases such as reproductive herpes simplex virus and variant herpes simplex virus have a greater impact on egg production.

2. Implement high temperature feeding and ensure that the temperature is constant, not less than 35 degrees Celsius in the first three days. The standard is that the chickens are evenly distributed and do not open their mouths and pant. Since the temperature of brooding chicks is not easy to control in winter and spring, the incidence rate of chickens is relatively high.

3. Strictly disinfect the contaminated chicken farms to prevent the spread of germs.

4. When laying hens are 1-3 days old, use the recombinant avian influenza vaccine to drip into the nose and eyes, 1-2 drops per chick. The second immunization is carried out at 10-20 days old.

The above is the method of eliminating laying hens with infectious bacterium and the method of preventing laying hens from infectious bacterium. I hope it can be helpful to everyone! I wish your laying hens can produce more eggs!

4. What disease does it cause if one eye of a laying hen is red and swollen?

Conjunctivitis

If one side of the laying hen's eye is swollen, it may be conjunctivitis, and you need to go to the pet hospital for examination in time. If you don't check, the conjunctiva of one or both sides of the chicken will be inflamed, red and swollen, and yellowish purulent mucus will flow out. Soon the eyelids will swell, the upper and lower eyelids, the infraorbital sinus will swell, and even the face will swell, and eventually both eyes will become blind.

5. What disease is it that causes the comb of a laying hen to turn purple or black after death?

It may be that the Newcastle vaccine was not injected properly. You can feed the chickens with Newcastle vaccine for a few more days.

It could also be Pasteurella. It is best to improve the environment of the chicken coop. You can spread a lot of rice bran and charcoal ash on the ground to prevent moisture, and then buy water-soluble oxytetracycline tablets to feed the chickens.

If chickens continue to die in large numbers, it is recommended that you contact your local veterinary station.

6. What is laying hen liver rupture and how to treat it?

Since the beginning of spring, the temperature has gradually risen, the egg production of laying hens has also increased, and the overall price of eggs has also shown an upward trend. Farmers often tend to relax during this period and problems arise.

A few days ago, Mr. Huang from Shaanxi came to me and said that there have been sporadic deaths in the chicken flock recently, with 7-10 chickens dying every day out of 10,000 chickens. The dead chickens had white combs, ruptured and swollen livers. The dead chickens generally weighed 4.6-4.8 kilograms, slightly heavier than normal chickens. In addition, there were cases of broken eggs and white eggs.

The liver ruptures, swells, and bleeds.

Treatment options:

After analysis, it was confirmed that it was fatty liver in laying hens, also known as fatty liver syndrome or fatty liver hemorrhagic syndrome, which is a common nutritional metabolic disease in laying hens. It turned out that due to the inconvenience of feed transportation due to the epidemic, Mr. Huang still used the winter feed formula, which contained higher energy. However, in the spring when the temperature rises, so much energy is not needed, causing the energy to be stored in the form of fat, especially in the liver, which eventually caused the laying hens to be overweight and develop fatty liver syndrome.

It is recommended that Mr. Huang use Longchang bile acid to mix feed. In the first five days, 1000g is mixed with one ton of feed, and in the next five days, 500g is mixed with one ton of feed. In addition, the proportion of energy feed such as corn in laying hen feed is reduced, and the content of calcium and phosphorus in the feed is increased. On the fifth day of use, Mr. Huang was visited again. Mr. Huang said that the death rate of the flock began to decrease on the third day of use. Now only 2-3 chickens die a day, and the combs look redder and brighter than before. Bile acid is still being used. Mr. Huang said that Longchang bile acid is really effective in protecting the liver of laying hens! The effect cannot be replaced by other products. Thumbs up for bile acid!

So what are the causes of fatty liver?

1. Improper feeding and management during the rearing period, coupled with the fact that most chickens are now raised in cages, which do not allow them to move around in a large space. In addition, excessive feed intake leads to fat deposition in the liver;

2. The feed is nutritionally unbalanced, and high-energy, low-protein feed is used in pursuit of profit, or the feed lacks substances that synthesize protein, such as amino acids, vitamins, etc., which affects fat transport.

3. Liver problems. Long-term high-energy feed lacks methionine and bile acid, which causes obstacles in the liver's synthesis of phospholipids from neutral fats, resulting in large amounts of neutral fat deposition, making liver cells and blood vessels fragile and prone to liver bleeding. This is especially true in July and August when the temperature is hot, and obese chickens are most susceptible to liver bleeding.

How does Longchang bile acid solve fatty liver?

Bile acid has the ability to emulsify, digest and absorb fat, which can fundamentally solve the problem of nutritional imbalance in laying hens and treat fatty liver. It can also stimulate the liver to produce a large amount of thin bile, dredge the bile duct so that various toxins in the liver can be discharged through bile, effectively decompose or combine toxins, relieve the burden on the liver, and keep the liver in the best working condition.

I am Lao Wang, a poultry disease doctor. I am committed to popularizing chicken farming knowledge in plain words. If you like this article, please forward it and follow it. If you have other questions, please leave a message to communicate with us~

7. What disease does it cause if laying hens’ combs turn purple and they refuse to eat?

Hypoxia, poisoning, viruses, sepsis, acidosis, etc. can cause dark purple crown and beard. Consider viruses and drug overdose.

Secondly, weather is the main factor. I have more than 1,000 of them at home. A few days ago, this happened. It was mainly due to lack of water. Some of them had purple tails. It was not too much. They were in good spirits and eating normally. There was no big problem. You can get more drinking fountains and put them under the shade of trees. In this way, they can drink at any time. If they are all purple, you should pay attention. Fortunately, see if there is any epidemic in your area. Hope it helps.

Poor ventilation in the early stage can cause ascites in the later stage, and hypoxia caused by respiratory tract and bronchial obstruction can cause purple crown.

8. What are the regulations for prescribing medication for chronic diseases in Henan?

First of all, in principle, the medicine should be prescribed by the patient himself, right? If the patient is too old and frail to go to the hospital, he should show something and ask his children or family members to prescribe it on his behalf. Secondly, the medicine should only be enough for half a month or a month at a time, not more. Then, there should be a physical examination once a year. If the disease gets better and he no longer needs to take medicine, his chronic disease should be cancelled.

9. What time does Henan Occupational Disease Hospital close?

Official public hospitals all work eight hours a day. They usually get off work around five o'clock. But you'd better go in the morning because there are many tests to be done. Silicosis is the fibrosis of lung tissue caused by long-term breathing of silica powder. Lung function tests and X-ray diagnosis are required. You can get compensation.

10. What disease causes laying hens to have yellow, loose, dry, green feces?

Hello, the yellow, white and green feces of laying hens are mainly caused by Escherichia coli disease in chickens. The yellow-green sticky and soft feces belong to atypical Newcastle disease. The specific situation needs to be treated according to the actual situation. It is recommended that you consult a local veterinarian for diagnosis and treatment. Thank you.