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Swine health
Pig diseases can be caused by bacteria, viruses, protozoa, nutritional deficiencies, poisonous substances, internal and external parasites.
Bacterial diseases include swine erysipelas, swine dysentery, infectious poly-arthritis etc. Viral and mycoplasma diseases include African swine fever, swine influenza, enzootic pneumonia of pigs, vesicular exanthema of swine, transmissible gastroenteritis etc. Helminthiasis as a health problem in pigs is mainly caused by worms like the lungworm, ascaris worm etc. Nutritional diseases include piglet anemia, parakeratosis etc. External parasitic infections include mange, lice, jiggers etc.
How to tell that a pig is in bad health:
General signs: dullness, loss of appetite, labored or rapid breathing, sudden deaths, loss of weight, low weight gain and fever usually manifested by shivering of the pig.
Signs expressed on the skin: reddening of the skin or skin discoloration, loss of hair and hardening of some parts of the skin, itching and cracking of the skin.
Other signs: lameness, cough, abnormal nasal discharges, diarrhea with a putrid smell, abnormal content and color of feces and abortions.
Introduction: Bordetella bronchiseptica (Bb) is involved in the aetiology of atrophic rhinitis of swine and causes remarkable economic losses for pig production. Antibiotic treatment is widely used for the treatment of bacterial infections, nevertheless, little is known about the antibiotic resistance of the B. bronchiseptica strains circulating in Hungary. Our aim was to fill this gap by a retrospective analysis of strains originated from pigs. Furthermore,...
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Introduction: Local reactions are possible side effects after vaccination in animals. In the case of live viral vaccines, local reactions are mostly small and transient, whereas in the case of inactivated vaccines local reactions are often more pronounced. These effects are due to the use of adjuvants in inactivated products. Depending on the adjuvant type, local inflammatory reactions at the injection site are common but vary in extent. In Europe the safety of...
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Introduction: Swine brucellosis outbreaks due to Brucella suis biovar 2 (B. suis 2) occur sporadically in continental Europe. Control and eradication is based on O-polysaccharide (O/PS)-based serological tests and full stamping out of infected herds. However, these tests frequently return false positive serological reactions (FPSR) due to infections with other gram-negative bacteria sharing O/PS epitopes. Previously we proved that a skin test using O/PS free cytosolic...
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Introduction: African swine fever (ASF) disease was eradicated from domestic swine herds in Brazil in 1984, after six years of hard work, determination and with highly cost due to the occurrence in pig small farms. The ASF virus (ASFV) belongs to the family Asfarviridae being the only member of Asfivirus genus. Our previous studies on ASFV epizootiology and virulence demonstrated that virus has dispersed from the first ASF outbreak in pig herds in Paracambi city of state...
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Introduction: Porcine epidemic diarrhea (PED) characterized by watery diarrhea and vomiting, was described throughout Europe till the end of the 1990’s and is caused by an Alphacoronavirus, the PED virus (PEDV). Since April 2013, a severe epizooty of PED has been striking USA previously free from this disease. Suckling piglets are the most affected by PED with up to 90-95% mortality. In China in 2010 and USA in 2013, PED epidemics were related to new PEDV strains....
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Introduction: In Flanders, the Porcine Reproductive and Respiratory Syndrome virus (PRRSv) and Porcine Circovirus 2 (PCV2) are endemic on most herds and recognised as two major pathogens with a significant economic impact in the domestic pig. In order to monitor the infection status of a herd concerning PRRSv and PCV2 a voluntary program started in February 2015 with financial support of the Belgian Fund for Animal Health (For more details, refer to the companion...
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Introduction: Porcine respiratory and reproductive syndrome virus (PRRSV) is an important porcine pathogen that causing huge economic impact in swine industry worldwide. The genetic characteristics of the PRRSV strains clearly indicate the existence of two major genotypes, the European type (EU genotype, type 1) and the North American type (NA genotype, type 2). However there was no viremia detection result of type 1 and 2 PRRSV by quantitative real-time PCR assays in...
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Introduction: Influenza A virus infections causing economic losses are widely spread among swine populations worldwide. Swine can be infected by avian as well as by human influenza viruses. In Europe, over the last decade, three stable lineages of reassortant viruses between avian and human viruses have formed. The human pandemic H1N1/2009 virus has become a fourth player in this field and is currently disturbing the balance of the previously established European porcine...
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Will New Version of GMP Boost the Veterinary Drugs Industry?
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Introduction: Farrowing is a critical period for the sow in which painful, inflammatory and infectious processes along with other systemic events cause postpartum stress and may trigger Postpartum Dysgalactia Syndrome (PPDS) which manifests itself either in clinical or subclinical presentation, both with negative impact on the sow and its litter regarding the development of suckling pigs. The objective of this study was to determine under field conditions the effect of...
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INTRODUCTION Mycotoxins are toxic compounds produced by different fungal species, Fusarium being responsible for most contamination of feedstuffs in the field. Among more than 400 identified mycotoxins, deoxynivalenol (DON) and zearalenone (ZEN) are of most concern for the pig industry. Pigs are very sensitive to both DON and ZEN. When acute dietary exposure occurs, DON can lead to vomiting and feed refusal (1), whereas ZEN has oestrogenic effects (2). However, in practice, acute...
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Introduction: WGV0917(KCTC 12783BP), WGV1014(KCTC 12784BP), and WGV1107(KCTC 12785BP) were originally isolated from neonatal piglets that were shown typical PRRSV infected symptoms. These strains had genetically characterized the NA (WGV0917 and WGV1014) and EU (WGV1107) strains and culturally passaged on PAM cells for adaptation and MARC-145 cells for attenuation. This study was to compare their immunogenicity of attenuated virulent PRRSV NA and EU strains with Ingelvac...
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Introduction: Mycoplasma hyopneumoniae infection is one of the causes of respiratory disease in pigs which is the primary agent in enzootic pneumonia. Enzootic Pneumonia is a chronic disease with low mortality but high morbidity causing economic loss in swine production through retarded growth, poor feed conversion, and predisposal to bacterial pulmonary infections. In Nepal, pig farming is increasing widely and the respiratory and reproductivity problem is also increasing...
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Introduction: The members of the Pestivirus genus are antigenically related, consequently cross-infections, such as BVDV infections in swine, are often reported. The virus neutralization assay (VN) is the standard diagnostic assay for BVDV infections in cattle according to the OIE. However, very little information is available in the scientific literature about the use of VN to detect and quantify antibodies anti-BVDV in swine serum. This study focused on describing our...
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Introduction: The new porcine epidemic diarrhea (PED) outbreak has been documented in China since late 2010 and now with global distribution, resulting in enormous economic losses to swine industry. Autophagy is a highly conserved intracellular degradation process and be manipulated by some viruses for their benefits. Our previous proteomic data indicated that autophagy might participate in PEDV infection. However, the concrete role of autophagy is unknown. In the present study,...
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Introduction: Hoof lesions, which are very common in modern sows, were associated with high risk of early culling and compromised welfare of sows. Some hoof lesions were also associated with decreased litter weight, increased pre-weaning piglet mortality and higher odds of stillborn and crushed piglets. Evidently, if hoof lesions negatively affect not only sow longevity but also the important reproductive parameters which determine the utilisation of breeding herd’s...
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Introduction: Extended-spectrum penicillins have a similar spectrum of activity to 2nd and 3rd generation cephalosporins and they include aminopenicillins such as amoxicillin and ampicillin and amoxicillin in combination with clavulanic acid. Bacterial resistance to extended-spectrum penicillins has evolved rapidly in recent years specially in Enterobacteriaceae because these bacteria could carry beta-lactamases capable of hydrolyzing important beta-lactam...
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Will New Version of GMP Boost the Veterinary Drugs Industry?
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Introduction: The positive effects of antibiotic treatment on growth and health of pigs during the weaner stage are well known. However the long term ‘carryover’ effects are less well known. There is some evidence that in-feed antibiotics during the weaner stage may have a detrimental impact on the development of the immune system and therefore negative consequences for pig health. We studied the effects of an antibiotic treatment during the weaner stage on the...
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Introduction: Due to consumption of Porcine Cysticercosis infected pork, a serious and life-threatening disease named Neuro- Cysticercosis has been reported in the 2-3% of weaker section of human population of rural and slum areas of Rajasthan state in India. 75% of hospitalized patients with neurocysticercosis were at productive age, and are frequently unable to work soon after the onset of symptoms associated with epilepsy. 90% of the pig’s population is raised by weaker...
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Introduction: This case study examines a herd with a history of endemic K88 E. coli and Salmonella diarrhea post wean. Signs included acutely: diarrhea and dehydration; subacutely: acute signs plus gradual fat loss; and chronically: muscle loss and rough hair coat. Control is sporadic with both vaccination and medication attempts. Currently Neomycin therapy is used. In an effort to increase treatment efficacy, reduce dependence on antibiotics, and support health and...
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Introduction: Leptospirosis is a worldwide zoonotic disease caused by pathogenic serovars of Leptospira sp. The disease in swine is mainly transmitted by contact with infected urine, blood, tissues, organs, contaminated water and feed. Leptospirosis can be spread by rodents or by direct contact of infected pigs. Clinical symptoms such as abortion, stillbirths and sometimes infertility are the most often observed consequences of Leptospira sp. infection in...
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