Technical Control | Economic Loss of AR Disears and Analysis of Vaccine Immunology – Pig Pig School – China Animal Husbandry Website – A useful animal husbandry website
Source: Carlos Casanovas Granell International Pig Veterinary Consultant
Pig Professional Manager, WeChat ID: Yzzyjlr2016
Pig-proof atrophic rhinitis is worldwide The disease is present. It can cause serious economic losses, mainly caused by the growth rate of the onset of pigs. The goal of this paper is to assess additional economic losses of atrophic rhinitis and adopt immunization sows to prevent the rationality of atrophic rhinitis.
1, AR Introduction
Pig infectious atrophic rhinitis has been reported in 1830 gradually, gradually found that there is only the disease with the disease worldwide. The disease is caused by Bacillobacillus and Toxic Bacillus, and other secondary and adverse environmental management factors can further increase the severity of the condition. Separate infection of the porcine colony in Fung’s bacilli exhibits nasalosis – moderate non-carcuttricked rhinitis, usually not serious. However, once there is Bacillus to intervene in this infection, the symptoms of the pigs will become very serious. The pigs are obvious, the nose is up or horizontally, and the nasal bone is integrated. In this case, the disease name is also known as performing atrophic rhinitis.
2, factors affecting the clinical symptoms of atrophic rhinitis
The degree of lesion depends primarily on the age of the pig. The infection of Bacillus caused by nasal distortions must be young piglets, while Pasteliobacillus causing nasal distorted infections can occur at 12-16 weeks of pigs (JONG AND AKKERMANNS, 1986-1999). Therefore, it is very important to get the piglets to get protected raw milk.
The possibility of atrophic rhinitis in piglets of primary sows or piglets with low birth weight, because the primary milk quality is often not high, or the small body is insufficient. This also happens in the fierce nest in the nipple order (the number of effective nipples is insufficient or too many breastfeeding pigs, or both cases occur simultaneously). With the improvement of reproductive performance, good foster management, adding extinct milk for weakness, is very important for controlling early infection. The best practice is immunizing sows to produce high antibodies in atrophic rhinitis. Such a piglet can be protected during the breastfeeding stage.There is a greater possible infection of atrophic rhinitis with a large breast pig. It has not taken a full-time full or in the environment in conservation and fattening period (the ventilation, low-transporting volume, the density is too large, etc.) will increase the presence of atrophic rhinitis symptoms.
3, the effect of atrophic rhinitis on pig growth rate
Pig has been treated with atrophic rhinitis, the growth rate will slow, and it is more likely to have pneumonia, because the atrophic nose is not different It opened the convenient door to the secondary infection. DONKO ET AL 2005 reported that in the fattening period, it is 11 weeks, the loss caused by atrophic rhinitis is already obvious. In this study, there was no difference in weight in weaning piglets, although they showed different levels of lesions in the slaughterhouse. However, to 90 days (13 weeks) The most serious pig (3-level nose lesion) of atrophic rhinitis accounts for 29% of the total pigs, and its weight is 3 kg less than other pigs (51.7 grams per day). From 90 days to slaughter (about 190 days or 27 weeks, 110 kg body weight). Compared with the piglet with no lesions, the most serious lesions (3-level nasal lesions) are 7.6 kg (75.8 grams per day), which requires more than 8 days to go public. From 28 days to 190 days, less than 56.8 grams per day (9.6% less than the growth of piglets in the 1st-level nose lesion). The pigs in the middle lesions (2-level nose lesions) account for 38% of the total pigs, compared with the piglets without lesions, less than 5 kg (56.8 grams per day), need 3 days to go public. From 28 days to 190 days, 25.1 grams per day (4.3% less than the increase of the 1-level nasal lesion). Slightly lesions of pigs account for 33% of the total pigment.
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Overall, the severe pig in atrophic rhinitis accounts for about 1/3 of the total number of pigs, which is about 10-15% lower than the pigs without lesions; medium-nasal lesions are long-term 4% lower than the pork without lesions. Pedersen (1982) has found that the daily gain of pigs in atrophic rhinitis, which has fallen by 15% compared with pigs without lesions. Based on MADEC and TILLON (1988) and StrawEt Al. (1989) research results, T. Blaha draws the following table to show that pig respiratory disease will have a significant effect on pig growth, very slightly atrophic rhinitis and lung lesions The loss of weight can also reach 4-5%.
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4. Evaluation of economic losses caused by sexual atrophic rhinitis and the anti-control effect of immunization pigs vaccine cost
Assume 1 antique rhinitis The price of the vaccine is 22 yuan. The immune program recommended by Haibole company is: 3 weeks before childbirth, 1 time; first sow is immunized twice, the first time 6 weeks before childbirth, 3 weeks before childbirth. In the case of high incidence of infection, it is recommended to immunize 3 times before the initial delivery of the initial sows, the first exemption in May 3, the first is 3 weeks later, and three weeks before childbirth.
Geniish sow: 3 immunization * 22 yuan / time = 66 yuan / cycle
After the sow: 1 immunization * 22 yuan / time = 22 yuan / week
The farm produced by the production, from 80%, the sow 20%.
An immune cost in a breeding cycle: (22 * 0.8) + (66 * 0.2) = 30.8 yuan.
Assume that the number of pigmented pigs is 10.5 per nest, and the mortality rate is 3%, and the fattening mortality rate is 2%. Then each mother pig can go out of 9.98 pigs in a breeding cycle. The vaccine cost is shared to each fat pig: 30.8 yuan (vaccine cost per sow, a breeding cycle of each sow) / 9.98 head slaughtered pig (number of pigs in a breeding cycle of each sow) = 3.09 yuan, here no Calculate the labor cost of the injection vaccine.
The cost of antibiotic therapy
Is there a way to assess whether the cost of vaccineThe method is to compare it to the cost of antibiotic therapy with antibiotic treatment with hypothetical porcine. Assuming our treatment is: 600 grams of Dormin per ton of feed, 50 kg of pigs continue to feed for 7 days. The cost of this treatment program is as follows:
Doze Cerin cost: 400 yuan / kg (240 yuan per ton feed, 0.24 yuan per kilogram)
Feed consumption: 2kg * 7days = 14kg
The treatment cost of 50 kg of pigs = 3.36 yuan
It can be seen that the vaccine control of each piglet is 0.27 yuan lower than antibiotic therapeutic cost. But still to be observed is: which is more efficient. In the case of severe infection of sex atrophic rhinitis, it is hoped to have a large risk of 100% of controlling disease by simple 7 days of western cyclin. In the actual production process, simple antibiotic treatment does not prevent the occurrence of atrifice.
The economic impact caused by production loss
ratio of gum and feed conversion rate
In order to assess economic losses caused by pig atrophic rhinitis, it is assumed that all animals of all animals during the fattening period The weight loss is 5%, and the research shows that the impact of pig atrophic rhinitis on the daily incremental weight is very close to this estimate. However, these studies have only mentioned the loss of daily gain, and there is no key information for economic losses, for example, feed conversion. However, daily gain is closely related to feed conversion.
How to speculate on the loss of feed conversion?
Based on the SIP consulting database, the information from different companies and under market conditions is analyzed in 2007-2009. It is found that the correlation coefficient of daily gain and feed conversion is -0.267, indicating that these two variables are significant. Related (P
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15% of economic losses caused by daily losses
15% of the daily losses lost 5%The loss is expressed in two aspects. First, in order to achieve the optimal slaughter weight, the number of pigs in the pig increases, the direct result is to increase the fixed cost; Second, due to the increase in feed conversion, the feed consumption will also increase, resulting in the increase in feed costs.
Use the cost decomposition simulator (V1) to calculate the production of a pig that produces a 1 kg of fattening to 105 kg, and the economic losses caused by 5% of the daily gain weight loss. The ratio of the daily gain and feed conversion rate mentioned above is also considered. After the initial weight and final weight of the simulator, we get the following reference value: The fattening period is 134.2 days and the feed conversion rate of 2.61. Therefore, the reference daily gain is 0.663kg / day [by weight loss (89kg) divided by fattening time (134.2 days).
Technical parameters corresponding to the porcine (atrophic rhinitis pig) of health pig (atrophic rhinitis pig) with daily gain were compared:
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1. The loss of weight loss is 5% means that 0.033kg is reduced daily, that is, the weight gain of 89KG needs to extend the fattening period for 7.1 days.
2. Application of regression coefficients (-0.783) between daily gain and feed conversion, and we found that growth of 0.033 kg / day results in increased feed conversion rate by 0.026, resulting in an increase of 2.3 kg per pig feed. We use the following reference value provided by the Excel simulator to assess the financial impact of growth and feed conversion on production costs:
1. Each fattening pig is 251.6 yuan per year, equivalent to 0.689 yuan a day
2. Each kilogram of feed cost (3.2 yuan / kg)
Putting the sow’s vaccine costs to the column fertilizer pigs is approximately 3.09 yuan / head, and the disease caused by 5% for financial impact. For 12.25 yuan, we can get 296% of its return on investment. This data is very attractive, prerequisites are very effective in use, immunized animal growthDivision and healthy animals.
Assuming that pig atrophic rhinitis caused pig growth rate by 5% in a fattening period, and the cost of production costs per-slaughtering pig is about 12.25 yuan. [Other losses have not been calculated, for example, drug costs and increased mortality. Of course, the above estimated premise is that immune animals are as fast as health. This premise is correct, in fact, it is not the theme of this article, and the company needs the company’s experts to provide theoretical basis. Another benefit worth considering is to adhere to the immunopenic sow, adhere to the introduction of negative backpass, and the pig farm may purify pig atrophic rhinitis. If the cost of the vaccine is 3.09 yuan / each slaughter pig, and the vaccine is very good for the protection of pigs, it is clear that the use of the AR vaccine is very wise, even in some cases, the loss caused by the disease may be lower than the above estimates. It takes a series of scientific diagnosis to decide whether to immunize the vaccine, including clinical symptoms of atrophic rhinitis (whether there is a nose skewing, runny nose, etc.) in the farm (sneezing, runny nose, etc.) The nasal septum is distorted and separated to the biocolite bacterium inhibitors.
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