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Registros recuperados: 27
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Alternativ kontrol af indvoldsorm hos svin Organic Eprints
Mejer, Helena; Roepstorff, Allan.
De fleste almindelige indvoldsorm i danske svin er helt afhængige af værtsdyrenes nærmiljø, fordi en del af deres livscyklus skal gennemføres uden for værtsdyret. Ormene udskiller æg, som deponeres med værtens gødning i dennes omgivelser, hvor æggene dernæst udvikler sig til mere eller mindre hårdføre infektive stadier, som enten kan gensmitte værten eller smitte nye værtsdyr. Danske svin er gennem mange år blevet koncentreret i stadig større og mere intensive besætninger. Sammen med en udbredt brug af medicinering har dette forårsaget en markant reduktion i forekomsten og intensiteten af parasitter. Den økologiske driftsform, hvor forebyggende medicinsk behandling ikke er tilladt, og hvor dyrene skal have rigelig strøelse og adgang til udendørs...
Tipo: Report chapter Palavras-chave: Pigs; Health and welfare.
Ano: 2004 URL: http://orgprints.org/3243/1/3243.pdf
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Anaerobic digestion as a tool to eliminate animal parasites and weed seeds Organic Eprints
Johansen, Anders; Hansen, Christian M.; Andreasen, Christian; Carlsgart, Josefine; Nielsen, Henrik Bangsø; Roepstorff, Allan.
Anaerobic digestion of residual materials from animals and crops offers an opportunity to simultaneously produce bioenergy and plant fertilizers at single farms and in farm communities where input substrate materials and resulting digested residues are shared among member farms. A surplus benefit from this praxis may be the suppressing of propagules from harmful biological pest like animal parasites, pathogens, and weed seeds. In the BIOCONCENS project (http://www.icrofs.dk/Sider/Forskning/foejoIII_bioconcens.html) batch experiments were performed, where survival of six species of weeds and the pigs large roundworm Ascaris suum (non-embryonated eggs) was assessed under conditions similar to biogas plants managed at meso- (37°C) and thermophilic (50°C)...
Tipo: Conference paper, poster, etc. Palavras-chave: Composting and manuring; Health and welfare.
Ano: 2011 URL: http://orgprints.org/18901/4/18901.pdf
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Antagonistic effect of chitin-degrading microfungi on thick-shelled pig helminth eggs Organic Eprints
Katakam, KIran Kumar; Thapa, Sundar; Meyling, Nicholai V.; Dalsgaard, Anders; Roepstorff, Allan; Thamsborg, Stig Milan.
The rising demand for pigs produced in organic farming systems, which require access to outdoor areas and associated increased risk of gastrointestinal nematode infections, is creating growing interest in alternative control strategies. Also development of anthelminthic resistance due to extensive use of anthelmintics is a concern in intensive pig production. Use of chitin-degrading microfungi is one of the options. Extensive research has been conducted on biological control of plant pathogenic nematodes using such fungi, and some fungal species are commercially available for plant protection. In contrast, there are only limited laboratory studies conducted on eggs from nematodes which are animal parasites. The aim of present study is to investigate the...
Tipo: Conference paper, poster, etc. Palavras-chave: Health and welfare; Pigs.
Ano: 2011 URL: http://orgprints.org/20007/3/20007.pdf
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Ascaris suum infections in pigs born and raised on contaminated paddocks Organic Eprints
Mejer, Helena; Roepstorff, Allan.
The transmission of Ascaris suum was studied in outdoor reared pigs. From May to June, 2001 6 farrowing paddocks were naturally contaminated with A. suum using experimentally infected seeder pigs. Early July, 1 sow farrowed on each paddock. One piglet per litter was slaughtered every second week starting week 3 post partum (p.p.) for registration of liver white spots and recovery of A. suum from the lungs and the small intestine. The last pigs were slaughtered week 19 p.p. Faeces was examined for eggs and blood was analysed for A. suum specific antibodies. Weaning took place week 7 p.p. by removing the sow. Paddock infection levels were estimated by regular examination of soil samples and in late June and late November using parasite naïve tracer pigs....
Tipo: Journal paper Palavras-chave: Health and welfare.
Ano: 2006 URL: http://orgprints.org/9367/1/9367.pdf
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Biogasproduktionens effekter på parasitter, ukrudtsfrø og jordens mikroorganismer Organic Eprints
Johansen, Anders; Carter, Mette S.; Hauggaard-Nielsen, Henrik; Nielsen, Henrik Bangsø; Andreasen, Christian; Hansen, Christian M.; Carlsgart, Josefine; Roepstorff, Allan.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality; Nutrient turnover; Health and welfare.
Ano: 2010 URL: http://orgprints.org/18902/4/18902.pdf
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Chicory roots improves the taste and odour of organic pork Organic Eprints
Roepstorff, Allan; Mejer, Helena; Thomsen, Lisbeth E.; Thamsborg, Stig M.; Byrne, Derek V.; Hansen, Laurits L.; Bach Knudsen, Knud Erik; Møller, Kristian.
The carbohydrate inulin is known to reduce the production of skatole in pigs. This is caused by inulin changing the intestinal flora, so that the bacteria that produce skatole are held in check. This change in intestinal flora also reduces the number of intestinal parasites in the pigs. However the high cost of inulin makes its use in pig feed impractical. Chicory root contains inulin and a series of other carbohydrates and secondary metabolites. Therefore we have examined whether chicory root can replace pure inulin and thereby reduce boar taint, improve the taste of pork and reduce the infection of pigs with pathogenic parasites and bacteria.
Tipo: Journal paper Palavras-chave: Health and welfare; Feeding and growth.
Ano: 2005 URL: http://orgprints.org/9369/1/9369.pdf
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Cikorierødder forbedrer smag og lugt i økologisk svinekød Organic Eprints
Roepstorff, Allan; Mejer, Helena; Thomsen, Lisbeth E.; Thamsborg, Stig M.; Byrne, Derek V.; Hansen, Laurits L.; Bach Knudsen, Knud Erik; Møller, Kristian.
Sukkerstoffet inulin er kendt for at kunne nedsætte dannelsen af skatol hos svin. Det skyldes at inulin ændrer tarmfloraen, så bakterier der danner skatol bliver holdt i skak. Samtidig bevirker den ændrede tarmflora at grisene får færre indvoldsorm. Inulin er imidlertid for dyrt til, at det kan betale sig at bruge det i svinefoder. Cikorierødder indeholder inulin og en række andre kulhydrater plus sekundære metabolitter. Derfor har vi undersøgt om cikorierødder kan erstatte ren inulin og derigennem mindske ornelugten, forbedre smagen og nedsætte grisenes smitte med sygdomsfremkaldende parasitter og bakterier.
Tipo: Journal paper Palavras-chave: Health and welfare; Feeding and growth.
Ano: 2005 URL: http://orgprints.org/9368/1/9368.pdf
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Grazing with heifers and sows alone or mixed: herbage quality, sward structure and animal weight gain Organic Eprints
Sehested, Jakob; Søegaard, Karen; Danielsen, Viggo; Roepstorff, Allan; Monrad, Jesper.
The aim of the present study was to compare the effect of mixed grazing (MI) by sows and heifers with alternate grazing (AL) or grazing heifers (HN) and sows (SN) alone on animal weight gain, sward structure, herbage quality and composition, and selection during grazing. Mixed or alternate grazing consistently improved the weight gain in both heifers and sows, compared with grazing one species alone, but the positive effect was statistically significant only for heifers. The herbage quality of the MI and AL systems was better compared with the SN system, but not clearly better compared with the HN system. The total animal weight gain (heifers+sows) and estimated herbage intake per hectare were also higher in the MI and AL systems compared with SN and HN...
Tipo: Journal paper Palavras-chave: Pasture and forage crops.
Ano: 2004 URL: http://orgprints.org/2971/1/2971.pdf
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Helminth parasites in pigs: challenges and current research highlights Organic Eprints
Roepstorff, Allan; Mejer, Helena; Nejsum, Peter; Thamsborg, Stig Milan.
Helminths in pigs have generally received little attention from veterinary parasitologists, despite Ascaris suum, Trichuris suis, and Oesophagostomum sp. being common worldwide. The present paper presents challenges and current research highlights connected with these parasites. In Danish swine herds, new indoor production systems may favour helminth transmission and growing knowledge on pasture survival and infectivity of A. suum and T. suis eggs indicates that they may constitute a serious threat to outdoor pig production. Furthermore, it is now evident that A. suum is zoonotic and the same may be true for T. suis. With these ‘new’ challenges and the economic impact of the infections, further research is warranted. Better understanding of...
Tipo: Conference paper, poster, etc. Palavras-chave: Production systems; Health and welfare; Pigs.
Ano: 2011 URL: http://orgprints.org/20238/3/20238.pdf
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Helminth parasites in pigs: New challenges in pig production and current research highlights Organic Eprints
Roepstorff, Allan; Mejer, Helena; Nejsum, Peter; Thamsborg, Stig Milan.
Helminths in pigs have generally received little attention from veterinary parasitologists, despite Ascaris suum, Trichuris suis, and Oesophagostomum sp. being common worldwide. The present paper presents challenges and current research highlights connected with these parasites. In Danish swine herds, new indoor production systems may favour helminth transmission and growing knowledge on pasture survival and infectivity of A. suum and T. suis eggs indicates that they may constitute a serious threat to outdoor pig production. Furthermore, it is now evident that A. suum is zoonotic and the same may be true for T. suis. With these ‘new’ challenges and the economic impact of the infections, further research is warranted. Better understanding of host–parasite...
Tipo: Journal paper Palavras-chave: Health and welfare; Pigs.
Ano: 2011 URL: http://orgprints.org/20008/4/20008.pdf
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Ikke-medicinsk kontrol af indvoldsorm i grise Organic Eprints
Mejer, Helena; Roepstorff, Allan.
Der er generelt en højere forekomst af indvoldsorm i økologiske grise i forhold til indendørs grise. For at reducere forekomsten af indvoldsorm kan man bl. a. sørge for at nye dyr er parasitfri, holde en moderat belægningsgrad, samgræsse søer med kvier, bruge næsering, ændre foderets sammensætning og fodre grisene med rovsvamp. Derudover anbefales det at man benytter foldskifte, så man fjerner grisene fra smittekilden (ormenes fritlevende larver og æg). Et større markforsøg har vist at larver af knudeormen overlever dårligt i det fri og må overordnet anses for at være et mindre problem. Æg af spolormen og piskeormen kan derimod overleve i flere år selvom især pisleormens æg kan være lang tid om at blive infektive for grise. Grises optag af æg af...
Tipo: Journal paper Palavras-chave: Pigs; Health and welfare.
Ano: 2003 URL: http://orgprints.org/3229/1/FOJOenyt_August_2003.pdf
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Inälvsparasiter i betesmark och hos grisar i ekologiska besättningar Organic Eprints
Lindgren, Kristina; Gunnarsson, Stefan; Lindahl , Cecilia; Wiberg , Sofia; Roepstorff, Allan.
Utevistelse på åkermark ger grisar goda möjligheter till sysselsättning och rörelse. Bökandet i jorden och intag av växtdelar och kryp är ett djupt rotat beteende. För att kunna ge grisarna denna möjlighet och samtidigt hålla deras inälvsparasiter under kontroll behövs mer kunskap. Danska studier tyder på att om smågrisar får en mycket tidig infektion ger detta upphov till en hög och varaktig spolmask-börda, som även kan ge betydande ekonomiska konsekvenser. Dessutom tycks vissa parasiter kunna ackumuleras i jorden ju längre besättningen har haft utegrisar. Syftet med detta projekt var att kartlägga smittrycket från inälvsparasiter i mark som användes till grisarna på ekologiska gårdar, och att ställa smittrycket i relation till förekomsten av...
Tipo: Report Palavras-chave: Animal husbandry; Health and welfare; Pigs.
Ano: 2009 URL: http://orgprints.org/18418/1/R%2D387%2DKL.pdf
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Intercalibration of a concentration McMaster Technique between eight European laboratories Organic Eprints
Mejer, Helena; Leeb, Christine; Heinonen, Mari; Cartaud, Gerald; Prunier, Armelle; Sundrum, Albert; Bochicchio, Davide; Lindgren, Kristina; Wiberg, Sofia; Früh, Barbara; Bonde, Marianne; Roepstorff, Allan.
Prior to a European prevalence survey of intestinal parasites of organic pig herds it was decided to introduce one common technique for faecal egg counts and to compare its execution at all involved laboratories to ensure data compatibility. It was clearly shown that avoid confounding variation it is extremely important not only to use identical techniques but also to implement the technique in exactly the same way.
Tipo: Conference paper, poster, etc. Palavras-chave: Health and welfare.
Ano: 2009 URL: http://orgprints.org/18410/1/18410.pdf
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Knowledge synthesis: Animal health and welfare in organic pig production - Final Report COREPIG Organic Eprints
Früh, Barbara; Bochicchio, David; Edwards, Sandra; Hegelund, Lene; Leeb, Christine; Heinonen, Mari; Maupertuis, F.; Sundrum, Albert; Werne, Steffen; Wiberg, Sophia; Mejer, Helena; Prunier, Armelle; Roepstorff, Allan; Lubac, Stanislas; Bonde, Marianne; Rousing, Tine; Sundrum, Albert; Lindgren, Kristina.
This report reviews the available information on the welfare of pigs when maintained according to organic standards in Europe. It begins by overviewing the populations of organic pigs in different countries at the time of writing (2007), the organic standards which govern their management and the systems in which they are typically kept. It then reviews for each stage in the production cycle (sows, suckling piglets, weaned pigs and fattening pigs) the available literature on health and welfare problems which might be experienced by the animals and the hazards which might give rise to these problems. Finally the report reviews the methods current available for the measurement of pig health and welfare and the extent to which monitoring systems currently...
Tipo: Report Palavras-chave: "Organics" in general; Health and welfare.
Ano: 2011 URL: http://orgprints.org/18419/1/18419.pdf
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Long-term survival and infectivity of porcine helminths on paddocks in relation to ploughing Organic Eprints
Mejer, Helena; Thamsborg, Stig Milan; Roepstorff, Allan.
The effect of ploughing on long-term survival and infectivity of the free-living stages of Ascaris suum, Trichuris suis and Oesophagostomum dentatum on pastures were followed in a 14-year study.
Tipo: Journal paper Palavras-chave: Health and welfare.
Ano: 2014 URL: http://orgprints.org/27389/7/27389.pdf
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Long-term survival of Ascaris suum and Trichuris suis eggs in relation to pasture management Organic Eprints
Mejer, Helena; Roepstorff, Allan.
Background: Organic pig production systems are commonly characterized by high helminth prevalences. This problem is partly associated with access to outdoor facilities such as pastures and more knowledge is needed on long-term pasture infectivity patterns to improve farmer advisory services and guidelines on pasture management. Methods: Six identical paddocks were originally contaminated in the spring to autumn of 2001 by pigs infected with high levels of Ascaris suum and low levels of Trichuris suis. Since then, no further eggs have been deposited and 3 of the paddocks have been ploughed to a depth of 20 to 28 cm and re-sown once a year while 3 paddocks remained untouched apart from yearly cutting of the vegetation. In the late spring and late autumn...
Tipo: Conference paper, poster, etc. Palavras-chave: Health and welfare; Pigs.
Ano: 2011 URL: http://orgprints.org/20004/2/20004.pdf
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Occurrence of intestinal helminths in two organic pig production systems Organic Eprints
Lindgen, Kristina; Lindahl, Cecilia; Höglund, Johan; Roepstorff, Allan.
Organically raised pigs are at particular risk of being infected with pasture borne endoparasites, but the housing and management system may nevertheless have a great impact on transmission. In the present study pasture rotation routines on six pig farms representing two different organic management systems were compared; 1) a mobile system, in which the pigs during the summer were living in huts on pastures that were included in a long-term crop rotation scheme, while they during the winter were stabled with access to a concrete yard; 2) a stationary system, in which the pigs all year round were stabled with access to outdoor pastures in the summer time and a concrete yard in the winter. On one farm per system, the faecal excretion of nematode eggs from...
Tipo: Conference paper, poster, etc. Palavras-chave: Farm nutrient management; Buildings and machinery; Pigs; Health and welfare.
Ano: 2008 URL: http://orgprints.org/12231/1/Lindgren_12231_ed.rtf
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Oesophagostomum dentatum and Trichuris suis infections in pigs born and raised on contaminated paddocks Organic Eprints
Mejer, Helena; Roepstorff, Allan.
SUMMARY Transmission of Oesophagostomum dentatum and Trichuris suis was studied in outdoor reared pigs. Six farrowing paddocks were naturally contaminated in May to mid June 2001 by experimentally infected seeder pigs. Early July, 1 sow farrowed on each paddock and starting week 3 post partum (p.p.) the offspring was slaughtered serially every 2 weeks for recovery of O. dentatum and T. suis. Faeces was collected regularly for parasite egg counts and acid-insoluble ash (AIA) content as an indicator for geophagy. Weaning took place week 7 p.p. by removing the sow. Paddock infection levels were estimated in mid June (O. dentatum) and late November (O. dentatum and T. suis) using helminth naïve tracer pigs. Soil and vegetation samples were collected...
Tipo: Journal paper Palavras-chave: Health and welfare.
Ano: 2006 URL: http://orgprints.org/9366/1/9366.pdf
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Parasite problems in organic livestock and options for control Organic Eprints
Thamsborg, Stig Milan; Roepstorff, Allan.
ABSTRACT: Organic livestock production has increased dramatically in recent years in Europe and other parts of the world. The aim of producing livestock under more natural conditions has led to a reversion to primarily outdoor production systems and less intensive housing when indoor, more forage-based diets, and a reduced reliance on external inputs like antiparasiticides. These major changes in livestock production systems may potentially result in re-emergence (or emergence) of parasitic infections. The basic objective of this paper is to give an overview of the available information on parasitic problems in organic livestock production with a focus on northern temperate regions. Furthermore, options for control that target these problems and are...
Tipo: Journal paper Palavras-chave: Health and welfare.
Ano: 2003 URL: http://orgprints.org/4509/1/4509.pdf
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Parasitter i udegående grise Organic Eprints
Mejer, Helena; Roepstorff, Allan; Thamsborg, Stig Milan.
Indvoldsorm forekommer hyppigere hos økologiske grise end konventionelle grise, da økologiske produktionssystemer typisk fremmer overlevelsen af ormenes smittestadier (æg) i dyrenes omgivelser. Et nyt projekt prøver derfor at undersøge overlevelsen af visse orms meget hårdføre æg i en gruppe økologiske besætninger. Formålet er at bestemme de priæmre smitteveje og hvordan man kan begrænse smittetrykekt til et acceptabelt niveau.
Tipo: Other Palavras-chave: Health and welfare; Pigs.
Ano: 2011 URL: http://orgprints.org/20236/4/20236.pdf
Registros recuperados: 27
Primeira ... 12 ... Última
 

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