Pig farms implement vaccine immunoassay pseudohave schemes and precautions – Yangshuo – China Animal Husbandry Website – A useful animal husbandry website

Pig Professional Manager, WeChat ID: YZZYJLR2016

Pseudohadia is a use of a variety of livestock and wild animals, and itch (except external) and cerebral spinal inflammation Acute infectious diseases for major symptoms. This disease can happen in four seasons, but in winter and spring and the peak season, it is often a sow house in the peak of childbirth, and the nest is about 100%. The pathogenesis is mainly in the 15-year-old piglets, the initial age is 4 days old, the incidence of 98%, the mortality rate is 85%. As the age is growing, the mortality rate can be reduced, and the adult pigs are slightly sick, but very little death. The sow is more than a passage or subclinical infection, rarely die.

In recent years, the pig farm has led to the rise of pseudo-raw wild poison, I think there are few factors:

First, the breeding farm pays attention to pseudohadia prevention and control The degree is not high, lack of scientific antibody monitoring data, there is a large vulnerability in the field biological safety, such as no regular mice, one-point feeding, etc .;

The second is excessively believed in vaccine, some Use Bartha-K61 (Barcelona) strain “a glimpse of life”, only in the 70th day, neither the nose is neither 100 days of age and has not been added, causing fattening pig infection, the reserve pig GE positive into the production group .
The third is to raise 300 ~ 400 pounds of “cattle” pigs, and there is no consciousness of a pseudoal tray in 3 ~ 4 months, resulting in “cattle” pigs.

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2018-8-27 09:40 Upload A 500-year-old pig farm, various types of pigs, pseudo-mad wild toxia

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Why is the 500-head pig farm? GB antibody detection explains now pig Although the pig pseudo race dog is high, but as long as it is immunized, goodThe feeding management, the production indicator will be very good! The key is that the field cannot let the pseudoal wilder to enter the trigeminal neuronus of the brain. Once the trigeminal nerve juncture is only poisoned by life, it is not possible to let the pseudo-raw wilder to enter The seminal vesicles are laid, because the pseudohadia and antibodies are unable to break through the blood-brain barrier. Therefore, pseudo-raw fang positive farms must use pseudo-raw boars.

A pig farm with a psessy-rated traveler GE reached more than 10%, we can take the immune frequency of pseudorant vaccine, virgin and inactivated seedlings, reduce the on-site mother pig strain; Birth pseudohave live seedlings 1 head drop, 56 days old BK inactivated seedling muscle injection, 100-year-old acting seedling muscle injection; combined with three weeks old weaning and two-point feeding process, you can use pseudo crazy The positive sow produces a pseudo-raw coil, the big premise is that the reserve pigs must take the negative into the production group take-off, gradually reduce the positive proportion of pigs, until the final purification of the fake traveler.

First, the main symptoms and precautions of PRV in the pig farm

1, the rear bonded sow

After the sow is infected with a false rabies, it is mainly manifested as a reserve sow. Emotion is abnormal, very few other clinical symptoms. However, after introduction of the backpass of the pseudohadia wild poison, if the pig farm pseudohadia immunization is loopholes, it is possible to introduce a mother for 15 days, and the pig farm will produce unstable phenomenon. It is mainly manifested as a cough, partial fever, and severely infected with pig lung disease, infectious pleural pneumonia and acute death. Sudden death phenomenon of unknown pigs in some pig farms. Other pigs rarely see clinical symptoms. Therefore, when introducing the reserve sow from the outside, the monitoring of pseudo-raw madmix is ​​the primary work to prevent pseudohaves.
2, after the sow of the sow

During the infection of pseudohadia field, the sow in the pregnant pigs is mainly manifested, and the sows in each stage will have a miscarriage. However, the time in abortion is more than 21 days of pregnancy and about 70-90 days of pregnancy. For about 21 days, there is no fever symptom in front of abortion, so there is a case where the food is significantly changed before and after abortion; the sow of abortion in 40-90 days, there is a short fever before abortion Performance, the amount of feeding is also significantly declined, even stoppedAfter 2-3 days, after abortion, the feeding capacity returned to normal.

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Long-time pig farm with pseudohadambsed wild poison, often rarely see the obvious abortion, but will show a higher proportion of dead tires. The author has followed the scale pig farms between 30-80% of the mother pig pseudo-mounted mobilibaneous antibody, and there is hardly received reports of abortion through the mother of pigs, but the phenomenon of death and death is relatively serious.

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Production piglets often see groups, the whole nest is weak, severe people, the body, lying, water, muscle spasm, etc. Phenomenon, it is easier to judge to be a false traveler. In fact, the individual of the piglets is large, the limbs are weak, suddenly death, the role of pseudo-trail infection is also ignored. In particular, the case of disasseopytical skin injury is often simply believed that piglet wound is infected with streptococcus, causing a large joint, standing. The author carefully observed that more cases were the original infection of pseudo-fake travelers, because the infection of the pseudo-rabies stood in the process of piglets, causing the skin of the pigs to break the skin, as for the back infected with streptococcus, is not the key , The key is to cause the source of skin trauma in the joint, so we need seriously analyze and treat it separately.

4, the preservation of piglets

The preservation stage is the main pathogenesis of pseudohaves in the pig farm, and the symptoms are mainly characterized by: (1) Nothing in the immune procedure Under the premise of change, the onset time is very determined, mainly in 45-55 days, concentrated on illness, the same pig farm, different batch of conservation pigs, the initial pathogenesis does not exceed 3 days.

(2) Epidemiology, mainly showing the disease3-5 days of aging in 3-5 days, the whole group is increasing, it is difficult to see the pigs that do not sickness;

(3) Clinical symptoms, fever, spiritual depth, loss of appetite. With no secondary infection, its body temperature is about 41 ° C, the overall sleeping state, the food is rapid, and the amount of drinking water is also significantly decreased, and the cough is obvious.

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(4) The proportion of pigs in the tract of pigs is very rare in secondary infection, but the cough symptoms are very common, serious or obviously gasp phenomenon.

(5) Due to the high rate of incidence during the incidence, different pig farms passed different treatment methods, and their mortality is different, so many pig farms are easily misdiagnosed as high-fever, blue ear disease and other diseases.

5 Of course, the above-like reasons are also feeding mildew, feeding heavy metal exceeds the standard, so the specific situation requires careful analysis, and the exclusion method is used to treat.

Second, laboratory detection

It can be seen from the above case that the infection of pig farm pseudo-travelers is more common, it is worthwhile.

Compare the test results of laboratory pseudo-raw wilder toxic antibody detection results in vaccine found that immunization of pseudohadia vaccines can interfere with the detection ratio of pseudo-mounted wild toxic antibodies. At a very high swine group of the pseudo-mounted mounted antibody detection rate, the blood passed by double immunocetal rabies, blood collection after 3 days, 7 days later, compared the two test results, there is no significant change in pseudo-raw wilder toxic antibody in 3 days. However, after 7 days, the positive detection rate of pseudo-raw wilder toxic antibodies was found to be almost zero. Therefore, when we detect a pseudohadia-like antibody to evaluate whether the pig group is infected with a pseudorant field, we must fully consider it, the vaccine immunization on the interference of the test results, otherwise it is easy to take laboratory testing. Contrary to the clinical actual symptoms. Front GB detectionIf you told us that the anti-body protection effect of the pig farm 24 weeks old pigs has been deteriorated. If the reserve mother pigs are easy to infect pseudoal wilder poison during this period, if the field is self-supporting the mother pig The best immunization time is about 22 weeks. Third, emergency immunization methods and precautions

Long-term test found that the clinical symptoms can be eliminated by double the pseudohadia vaccine. However, in an emergency vaccination of pseudohadia vaccine, it has been used to have a painful failure experience. I will now introduce the following:

(1) The selection of vaccines is critical. When doing emergency epidemic prevention, only the vaccine of aqueous adjuvant can be selected.

(2) vaccination antigen doses of TCID 50 must be sufficiently, antigen content, select 1-2, but the vaccine with low antigen content is not good. The current recommendation of the pseudoal traveler TCID 50 exceeds 5.5 times.

(3) When it is determined that the pig is a pseudoal traveler. If the mother-in-law milk is not large, it can immediately inject pseudohadia vaccines immediately, and there is no need to control secondary infection.
(4) The treatment of the pigs must first control the infection, and then immunized pseudohadia vaccine.
(5) Feed drugs add liquid multi-dimensional, amino acids are essential

fourth, raw pig pseudohadia recommended purification scheme

Clinically, the author first suggested Two vaccines for seedling and inactivating seedlings. The characteristics of the living seedlings can quickly stimulate the immunization of cellular immunity and body fluids, and the immunity is maintained for a long time. It can prevent the death of piglets and sow. It can be used in a porcine prevention; and inactivating the semifloation can increase the mother’s antibody titer, which can be used for the tire immunity in the previous month.

Second, pay attention to selecting a suitable vaccination: muscle injection binding nasal vaccination. Benefits of vintage nasal vaccination: can avoid the interference of mother-induced antibodies; build cellular immunity as soon as possible; reduce the emissions of positive psessage rabies.
Arrange the appropriate immunization time

The whole pig group must be immunized. Sow, each year 4 times, easy to manage, the immunity of pigs is consistent; the reserve sow is immunized twice before entering the pig, 4 weeks. Recommended time is 22Zhou and 26 weeks.

Now, the pseudo rabies clinical purification scheme is as follows:

1. All pigs include pig sows, and the unified boar is: 3, 6, 9, December each year. Immunization in the moon.

Second, piglets 1 day old nasal immunization (first 免), 56 days of age 2 exemption (or BK), 100 days of age
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Third, before the introduction, it is necessary to make a pseudo-raw wild toy detection, and find pseudo-raw madrotic antibody-porceries, which is strictly prohibited.
Fourth, for the choice of pseudohadia vaccine and immunotid dose, it is necessary to make a choice under the guidance of experienced veterinarians, combined with laboratory testing and clinical examination results to ultimately determine.

1. The choice of vaccines is critical.
2, the determination of the number of immunohist meters can determine the number of immune heads of different pigs according to different vaccine manufacturers.
3, different types of vaccines have a difference in immunization, must reasonably avoid mutual interference, otherwise it is very easy to cause immunity failure.
Source: Pig Professional Manager

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Original article, author:xinran,If reprinted,Please indicate the source:http://www.badpet.org/pig-farms-implement-vaccine-immunoassay-pseudohave-schemes-and-precautions-yangshuo-china-animal-husbandry-website-a-useful-animal-husbandry-website/

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