Parasitic helminths of the pig: factors influencing transmission and infection levels

Nansen, P.; Roepstorff, Allan

doi:10.1016/s0020-7519(99)00048-x

Cited by 126 publications

(113 citation statements)

References 68 publications

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“…ransomi is a little reported in studies of nematode parasites of pigs, possibly because of the need for measurement of eggs to distinguish them from superfamilies Trichostrongyloidea and Strongyloidea. Another factor that may interfere with the meeting of this parasite, resulting in a false negative, it would be bad thermal conditioning of the samples carrying the eggs hatch, a fact reported by Nansen and Roepstorff (1999).…”

Section: Discussionmentioning

confidence: 99%

“…The main negative effects on animals are reflected in economic losses for producers, such as: reduced feed conversion, reduced fertility, low number of piglets born and weaned, low weight piglets at birth and at weaning, as well as losses relating to viscera of high condemnation rate in slaughterhouses (Bordin 1987, Nansen & Roepstorff 1999, Roepstorff et al 1998). In addition, pigs are considered the main reservoir of Balantidium coli and Entamoeba polecki, which can infect humans, especially farm laborers (Solaymani-Mohammadi & Petri Jr 2006).…”

Section: Introductionmentioning

confidence: 99%

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Gastrointestinal parasites of swine raised in different management systems in the State of Rio de Janeiro, Brazil

Barbosa¹,

Bastos

Dib³

et al. 2015

Pesq. Vet. Bras.

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From 2012 to 2013 were surveyed gastrointestinal parasites from pig farms located in different municpaliyies in the state of Rio de Janeiro. Fecal samples from 790 pigs were collected from the rectum on 88 family farms and 702 farms with industrial production. The samples were subjected to Faust et al., Sheather, Ritchie, Lutz and direct examination faecal techniques. The estimated parasite prevalence was 93.1% in family farms and 59.1% in industrial farms. Balantidium coli, coccidia and Entamoeba sp. were the parasites with the highest frequencies, and the male and female reproductive categories and fatteners pigs the most infected (p<0.05). Trophozoites of B. coli were most evident in stool samples from semi-solid followed by solid and diarrheal consistencies. Strongyles eggs and Trichuris suis have been detected exclusively in family farms. Ascaris suum eggs and Strongyloides ransomi showed low frequency. The high degree of parasitism, especially protozoa, indicates the need to reassess the management of pigs in both types of production.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gastrointestinal parasites of swine raised in different management systems in the State of Rio de Janeiro, Brazil

Barbosa¹,

Bastos

Dib³

et al. 2015

Pesq. Vet. Bras.

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“…In Europe, most studies on many aspects of helminths in pigs, such as their epidemiology and the relation to management have been done in Denmark (Roepstor¡ and Jorsal, 1990;Roepstor¡ and Nansen, 1994;Nansen and Roepstor¡, 1999;Roepstor¡ et al, 1998;Carstensen et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

A Survey of Gastrointestinal Pig Parasites on Free-range, Organic and Conventional Pig Farms in The Netherlands

Eijck

Borgsteede

2005

Vet Res Commun

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The prevalence of gastrointestinal parasites in suckling piglets, weaners, fattening pigs and sows was studied from November 2001 to October 2002 on 16 free-range farms (FRF), 11 organic farms (OF) and 9 conventional farms (CF) by means of faecal examinations of composite samples. Each farm was visited four times with a 3-month interval. Infections with coccidia were found on 43.8% of the FRF, 90.9% of the OF and 66.7% of the CF. Sows had the highest prevalence, particularly on FRF (87.5%) and OF (80%). Ascaris suum was present on 50% of the FRF, 72.7% of the OF and 11.1% of the CF, whereas fattening pigs on FRF (42.9%) and OF (54.5%) had the highest prevalence. Oesophagostomum spp. were observed on 25% of the FRF, 27.2% of the OF and 22.2% of the CF. The infection was most prevalent in the sows on all farm types: 37.5% on FRF, 30% on OF and 22.2% on CF. Trichuris suis was found on 37.5% of the FRF, 36.4% of the OF and 11.1% of the CF. Again, this infection was most prevalent in the sows, particularly on the FRF (50%) and OF (30%). No other gastrointestinal parasite species were found and no clinical signs were observed. No seasonal trends could be distinguished. In many cases, when an age group on a farm was positive for a certain parasite, it remained so during the whole study. This indicates that this parasite was really`endemic' on that farm.The results of this study demonstrate that the prevalence of helminth infections of pigs on farms with outdoor facilities is higher than in pigs on conventional farms.

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“…Transmission of A. suum among pig populations is dependent on factors such as housing systems, hygiene, management practices and anthelminthic treatment [6]. Therefore, as Roepstorff [8] discussed, there is a need for multivariate analyses encompassing a range of variables in order to assess the most important risk factors for controlling A. suum infection in pigs.…”

mentioning

confidence: 99%

Ascaris and ascariasis

Dold

Holland

2011

Microbes and Infection

244

197

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Ascaris lumbricoides and Ascaris suum are widespread parasitic nematodes of humans and pigs respectively. Recent prevalence data suggests that approximately 1.2 billion people are infected. Adult worms exhibit an overdispersed frequency distribution in their hosts and individuals harbouring heavy burdens display associated morbidity. In this review, we describe the parasite, its distribution and measures undertaken to control infection.

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Parasitic helminths of the pig: factors influencing transmission and infection levels

Cited by 126 publications

References 68 publications

Gastrointestinal parasites of swine raised in different management systems in the State of Rio de Janeiro, Brazil

Gastrointestinal parasites of swine raised in different management systems in the State of Rio de Janeiro, Brazil

A Survey of Gastrointestinal Pig Parasites on Free-range, Organic and Conventional Pig Farms in The Netherlands

Ascaris and ascariasis

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