Infectious agents involved in reproduction failure in swine

Kwit, Krzysztof; Pomorska‐Mól, Małgorzata; Markowska-Daniel, Iwona

doi:10.21521/mw.5523

Cited by 2 publications

(3 citation statements)

References 51 publications

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“…in single infections may have been sufficient to cause abortion [ 4 , 56 ]. Conversely, the central role of viral agents in determining reproductive failures has been proven [ 57 , 58 ]. Viral agents could both systemically and locally affect reproductive organs, causing systemic dysfunctionality and damage in fetal and maternal tissues, potentially favoring bacterial growth, and leading to abortion [ 59 ]; thus, PPV2–7 might act in both ways.…”

Section: Discussionmentioning

confidence: 99%

Molecular Survey on Porcine Parvoviruses (PPV1-7) and Their Association with Major Pathogens in Reproductive Failure Outbreaks in Northern Italy

Faustini,

Tucciarone,

Franzo

et al. 2024

Viruses

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Successful reproductive performance is key to farm competitiveness in the global marketplace. Porcine parvovirus 1 (PPV1) has been identified as a major cause of reproductive failure, and since 2001 new species of porcine parvoviruses, namely PPV2–7, have been identified, although their role is not yet fully understood yet. The present study aimed to investigate PPVs’ presence in reproductive failure outbreaks occurring in 124 farms of northern Italy. Fetuses were collected from 338 sows between 2019 and 2021 and tested for PPVs by real-time PCR-based assays and for other viruses responsible for reproductive disease. At least one PPV species was detected in 59.7% (74/124) of the tested farms. In order, PPV1, PPV5, PPV6, PPV7 and PPV4 were the most frequently detected species, whereas fewer detections were registered for PPV2 and PPV3. Overall, the new PPV2–7 species were detected in 26.6% (90/338) of the cases, both alone or in co-infections: PCV-2 (7.1%, 24/338), PCV-3 (8.2%, 28/338), and PRRSV-1 (6.2%, 21/338) were frequently identified in association with PPVs. Single PPVs detections or co-infections with other agents commonly responsible for reproductive failure should encourage future studies investigating their biological, clinical, and epidemiological role, for a better preparedness for potential emerging challenges in intensive pig production.

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Section: Discussionmentioning

confidence: 99%

Molecular Survey on Porcine Parvoviruses (PPV1-7) and Their Association with Major Pathogens in Reproductive Failure Outbreaks in Northern Italy

Faustini,

Tucciarone,

Franzo

et al. 2024

Viruses

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“…Niekiedy przyczyną śmierci zarodków lub płodów, a w ślad za tym poronienia może być posocznica związana z uogólnionym zakażeniem lub też wysoki poziom cytokin (sztorm cytokinowy) prowadzący do bardzo wysokiej gorączki, której konsekwencją jest śmierć rozwijających się w macicy płodów. Drobnoustrojami najczęściej odpowiedzialnymi za nagły wyrzut dużej ilości cytokin są przede wszystkim wirus grypy świń i włoskowiec różycy (25,31,33,38,49). Ważną przyczyną zamieralności zarodków i/lub płodów są mikotoksyny (7).…”

Section: Zamieralność Zarodków I Płodówunclassified

“…Lista chorób zakaźnych mogących być przyczyną zaburzeń w rozrodzie świń jest długa. Dane na ten temat zostały szczegółowo przedstawione w piśmiennictwie krajowym (25,33).…”

Section: Choroby Zakaźneunclassified

Important health and management reasons of early sow removal

PEJSAK¹,

TARASIUK²

2023

Medycyna Weterynaryjna

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Gilt and sow management practices are key factors for the reproduction and production efficiency of any production system. In Poland, the number of piglets born alive per sow per year and the number born alive per sow per lifetime are relatively low. This may have a number of causes. One of them is an unsuitable parity distribution. According to some data, most females are removed from the herd after the first or second parity. As a consequence, the number of piglets born alive per sow per lifetime is small. In some countries, the number of litters per sow per lifetime varies from 3.3 to 5.6, with a total number of 32 to 73 piglets weaned. The average longevity of a sow in various countries ranges from 467 to 969 days. For Poland, precise data are unfortunately lacking, but unpublished data suggest that the number of litters per statistic sow does not exceed 5, although in particular farms this parameter ranges from 3 to 7. According to data available from different farms, early sow culling takes place mostly after the first or second parity. The causes include errors in gilt’s rearing and introduction into the herd, stall acclimatization, and boar exposure. A gilt’s longevity and performance are also determined by her body weight and age at first breeding, feed intake in the lactation period, as well as body weight gained during gestation and 1st lactation. If properly developed and managed, a gilt with high immunity will perform well as a P1 and will continue to be highly productive throughout her lifetime. Otherwise, she will perform poorly in her first parity, after which her longevity is likely to be short. This paper also reviews health-related causes of early sow culling in Polish farms. The most important ones are infertility, embryonic death, stillbirth, mastitis, and MMA (mastitis, metritis, agalactia), as well as infectious pathogens (viruses), such as IAV-S, PRRSV, PCV2, PPV, ECMV, ADV, CSF, or bacteria: Leptospira spp., Brucella suis, and Erysipelothrix rhusiopathiae.

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Infectious agents involved in reproduction failure in swine

Cited by 2 publications

References 51 publications

Molecular Survey on Porcine Parvoviruses (PPV1-7) and Their Association with Major Pathogens in Reproductive Failure Outbreaks in Northern Italy

Molecular Survey on Porcine Parvoviruses (PPV1-7) and Their Association with Major Pathogens in Reproductive Failure Outbreaks in Northern Italy

Important health and management reasons of early sow removal

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