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Registros recuperados: 18
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Campylobacter species distribution in outdoor pigs: Oral presentation O44 Organic Eprints
Jensen, Annette Nygaard; Nielsen, Eva Møller.
A colony blot hybridization method with a digoxigenin-(DIG)labelled nucleotide probe was developed to enable Campylobacter jejuni species-specific identification of colonies present in minority. C. jejuni is the dominant cause of human cases of Campylobacteriosis. In contrast, C. coli is normally dominant in conventional pigs but it can be speculated that outdoor pigs host more C. jejuni due to a closer contact to the environment and wild-life where C. jejuni is pre-dominant. Since C. jejuni is considered more virulent to humans a potential shift towards C. jejuni in pigs may infer an importance to food safety. Individual pigs are often colonized with several Campylobacter strains. However, with conventional culturing techniques only few colonies are...
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Pigs.
Ano: 2003 URL: http://orgprints.org/1719/1/Jensen2003_Campylobacter_SafePork.doc
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Contamination of lettuce with antibiotic resistant E. coli after slurry application Organic Eprints
Jensen, Annette Nygaard; Storm, Christina; Baggesen, Dorte Lau; Forslund, Anita; Dalsgaard, Anders.
Due to disease outbreaks associated with contaminated vegetables it has been speculated to what extent this may be linked with application of animal manure as fertilizer, which is particularly practiced in organic vegetable production where conventional fertilizers are prohibited. A field survey was therefore performed to assess the survival and transfer of antibiotic-resistant E. coli from animal manure to lettuces, with E. coli serving as an indicator of bacterial enteric pathogens.
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Crop husbandry Farm nutrient management.
Ano: 2011 URL: http://orgprints.org/20418/3/20418.pdf
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Effects of feeding prebiotics to pigs for 1 or 2 weeks before slaughter Organic Eprints
Jensen, Annette Nygaard; Mølbak, Lars; Hansen, Laurits Lydehøj; Baggesen, Dorte Lau.
Prebiotics are non-digestible oligosaccharides acting by stimulating the growth of bacteria being beneficial for the gastrointestinal health of the host and may serve as a means to control pathogens. This study aimed to assess if inclusion of chicory or lupins (prebiotics) in the diet of pre-slaughter pigs for just 1 or 2 weeks could change the composition of their intestinal microbiota and help to lower the level of the important foodborne pathogen Campylobacter spp. The study showed that even a short-term alternative feeding strategy with prebiotics in the diet of pre-slaughter pigs elicited changes in the composition of intestinal microbiota with stimulation of the growth of bifidobacteria in caceum and a reduction of the Campylobacter spp. excretion...
Tipo: Conference paper, poster, etc. Palavras-chave: Health and welfare.
Ano: 2010 URL: http://orgprints.org/18115/3/Bifido_TRFLP_Camp_Food_Micro_2010_Organic_Eprint.pdf
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Effects of feeding prebiotics to pigs for 1 or 2 weeks before slaughter Organic Eprints
Jensen, Annette Nygaard; Mølbak, Lars; Hansen, Laurits Lydehøj; Baggesen, Dorte Lau.
Prebiotics are non-digestible oligosaccharides acting by stimulating the growth of bacteria being beneficial for the gastrointestinal health of the host and may serve as a means to control pathogens. This study aimed to assess if inclusion of chicory or lupins (prebiotics) in the diet of pre-slaughter pigs for just 1 or 2 weeks could change the composition of their intestinal microbiota and help to lower the level of the important foodborne pathogen Campylobacter spp. The study showed that even a short-term alternative feeding strategy with prebiotics in the diet of pre-slaughter pigs elicited changes in the composition of intestinal microbiota with stimulation of the growth of bifidobacteria in caceum and a reduction of the Campylobacter spp. excretion...
Tipo: Conference paper, poster, etc. Palavras-chave: Feeding and growth; Health and welfare.
Ano: 2010 URL: http://orgprints.org/19883/9/19883.pdf
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Escherichia coli Contamination of Lettuce Grown in Soils Amended with Animal Slurry Organic Eprints
Jensen, Annette Nygaard; Storm, Christina; Forslund, Anita; Baggesen, Dorte Lau; Dalsgaard, Anders.
A pilot study was conducted to assess the transfer of Escherichia coli from animal slurry fertilizer to lettuce, with E. coli serving as an indicator of fecal contamination and as an indicator for potential bacterial enteric pathogens. Animal slurry was applied as fertilizer to three Danish agricultural fields prior to the planting of lettuce seedlings. At harvest, leaves (25 g) of 10 lettuce heads were pooled into one sample unit (n ~ 147). Soil samples (100 g) were collected from one field before slurry application and four times during the growth period (n ~ 75). E. coli was enumerated in slurry, soil, and lettuce on 3M Petrifilm Select E. coli Count Plates containing 16 mg/liter streptomycin, 16 mg/liter ampicillin, or no antimicrobial agent. Selected...
Tipo: Journal paper Palavras-chave: Food security; Food quality and human health Composting and manuring Crop husbandry Crop health; Quality; Protection.
Ano: 2013 URL: http://orgprints.org/23106/7/23106.pdf
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Evaluation of intestinal sampling sites in pigs at slaughter for assessing antibiotic resistance level in swine herds Organic Eprints
Jensen, Annette Nygaard; Thanou, Olga; Axelsdottir, Aslaug; Thomsen, Signe Gerling; Aabo, Søren.
A small-scale study has indicated that faecal samples collected from the mid-colon of pigs at the slaughterhouse within 4 hrs after deliverance from the farm, can be considered representative for presence of antibiotic resistant bacteria the farm. Sampling at slaughterhouses offers an easy/cost-effective alternative to sampling at each farm
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Pigs.
Ano: 2012 URL: http://orgprints.org/22057/8/22057_paper.pdf
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Faecal contamination of lettuce heads after manure application Organic Eprints
Jensen, Annette Nygaard; Storm, Christina; Forslund, Anita; Baggesen, Dorte Lau; Dalsgaard, Anders.
In recent years, an increasing number of disease outbreaks have been associated with consumption of contaminated vegetables. Thus, it has been speculated to what extent such contamination is associated with application of animal manure as fertilizer, which is particularly practiced in organic vegetable production where conventional fertilizers are prohibited. A field survey was therefore performed aiming to assess the survival and transfer of E. coli from animal manure to lettuces, with E. coli serving as an indicator of bacterial enteric pathogens. Animal manure was applied to 3 Danish fields prior to planting of lettuce seedlings, then 5-8 weeks later at the normal time of harvest, inner and outer leafs of 10 lettuce heads were pooled into one sample...
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health.
Ano: 2010 URL: http://orgprints.org/20941/1/20941.pdf
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Lupin og cikorie gavner tarmsundhed hos slagtesvin Organic Eprints
Jensen, Annette Nygaard; Mølbak, Lars; Baggesen, Dorte Lau.
Fedding of finisher pigs with lupine (prebiotic) for just one week prior to slaughter helped to lower the excretion of the important human pathogen Campylobacter spp. However, the timing (lenght of feeding) seemed to be important in relation to the obtained effect.
Tipo: Newspaper or magazine article Palavras-chave: Food security; Food quality and human health Animal husbandry Feeding and growth Health and welfare Pigs.
Ano: 2011 URL: http://orgprints.org/18447/1/18447.pdf
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Reducing the risk of food borne pathogens (Campylobacter) in pre-slaughter piges vis short-time feeding with prebiotics Organic Eprints
Jensen, Annette Nygaard; Hansen, Laurits Lydehøj; Baggesen, Dorte Lau.
Pigs constitute a natural reservoir of Campylobacter spp., which implies a food safety concern. A potential means to control pathogens is inclusion of non-digestible oligosaccharides (prebiotics) in the diet. Prebiotics act by stimulating the growth of fermenting bacteria beneficial for the gastrointestinal health of the host. This study aimed to assess a possible Campylobacter spp. reducing effect of feeding pigs with lupin and chicory just prior to slaughter. The short-term inclusion of lupin in pigs’ diet prior to slaughter reduced the excretion level of naturally occurring Campylobacter. This indicates a lower risk of carcass contamination at slaughter and then a lower infection risk associated with consumption of pork.
Tipo: Conference paper, poster, etc. Palavras-chave: Health and welfare.
Ano: 2008 URL: http://orgprints.org/18117/1/ANJ_Abstract_final_FoodMicro2008_Organic_Eprint.pdf
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Restricted use of antibiotics in organic pig farming Organic Eprints
Aabo, Søren; Jensen, Annette Nygaard.
Can the restricted use of antibiotics in organic pig farming be documented to provide a safer, high quality meat product with less antibiotic resistant bacteria? The project SafeOrganic aims to document that the restricted use of antimicrobials in organic pig production leads to lower levels of antibiotic resistant bacteria compared with the level in conventional pigs. However, the project will also address the risk of losing this quality parameter, due to a widespread practice of slaughtering organic pigs together with conventional pigs,implying a risk of cross-contamination.
Tipo: Newspaper or magazine article Palavras-chave: Food security; Food quality and human health Pigs.
Ano: 2013 URL: http://orgprints.org/22541/13/22541.pdf
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Risiko for salmonella ved økologisk griseproduktion Organic Eprints
Jensen, Annette Nygaard.
Forsøg har vist at Salmonella bakterier kan overføres fra smittede økogrise til salmonella-frie grise holdt på udendørs arealer. Desuden kan salmonella bakterier overleve i foldmiljøet og under visse betingelser smitte salmonella-frie grise, som senere indsættes i folden.
Tipo: Other Palavras-chave: Pigs.
Ano: 2004 URL: http://orgprints.org/3924/1/3924.doc
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SafeOrganic - Restrictive use of antibiotics in organic animal farming – a potential for safer, high quality products with less antibiotic resistant bacteria Organic Eprints
Jensen, Annette Nygaard; Aabo, S..
Main research questions: Antimicrobial resistance (AR) in the food-chain is a concern due to risk of treatment failure of humans. - Do restrictions on antimicrobial (AB) usage in organic pig production lead to lower AR levels in organic pigs compared to conventional ones? - Is lower AR a quality trait of organic pork? - Does slaughtering of organic and conventional pigs together abolish this potential quality trait? - Can markers for imprudent AR use in organic pig herds be identified?
Tipo: Other Palavras-chave: Food security; Food quality and human health Health and welfare Pigs.
Ano: 2014 URL: http://orgprints.org/27980/7/27980.pdf
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Salmonella and Campylobacter infections in outdoor organic pigs Organic Eprints
Jensen, Annette Nygaard; Baggesen, Dorte Lau.
There is only limited data available on the prevalence of zoonotic bacteria like Salmonella and Campylobacter specifically in organic pigs, but the increased exposure to these pathogens in the outdoor environment may influence the food safety of organic pork. However, the late weaning, low stocking density and roughage may help to increase the resistance to bacterial infections in organically reared pigs. Outdoor organic pigs were inoculated with Salmonella and mixed with Salmonella-free pigs to study the transmission between pigs. Following, the infection risk associated with the use of Salmonella-contaminated pastures was assessed by introducing new Salmonella-free pigs into the contaminated paddocks. Campylobacter is considered a natural part of...
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Pigs.
Ano: 2006 URL: http://orgprints.org/9159/1/9159.doc
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Salmonella infection risk associated with outdoor organic pig production Organic Eprints
Jensen, Annette Nygaard; Baggesen, Dorte Lau.
Organic pig production provides an animal-friendly alternative to conventional production systems, but one of the concerns associated with the outdoor production form is an increased exposure to Salmonella and Campylobacter in the environment that potentially impairs the food safety of organic pork. The available data on Salmonella infections in organic pigs is scarce, but seroprevalence has indicated a higher occurrence of Salmonella in outdoor pigs. The potential beneficial effects of e.g. late weaning, low animal density and roughage with respect to resistance to Salmonella infections are discussed on basis of an experimental infection study. The persistence of Salmonella in a contaminated paddock environment constitutes a potential infection risk for...
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Pigs.
Ano: 2006 URL: http://orgprints.org/7502/3/Nygard_salmonella_revised.doc
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Salmonella infection risk associated with outdoor organic pig production Organic Eprints
Jensen, Annette Nygaard; Baggesen, Dorte Lau.
For organic pig production little information is available about potential food safety problems with respect to zoonotic bacteria like salmonella. The aim of the current study was to examine the salmonella infection dynamics in organic pigs through an outdoor experimental set-up. Pigs inoculated with Salmonella Typhimurium were grouped with non-infected tracerpigs to determine the transmission of salmonella between animals. The results indicated that the organic pigs were perceptive to infections but that the susceptibility varied considerably between pigs. Furthermore, bacteriological examinations of soil and water samples from the pasture environment showed the ability of salmonella to survive in the non-host environment. Moreover, introduction of...
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Pigs.
Ano: 2005 URL: http://orgprints.org/5965/1/5965.pdf
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Smitstoffer fra det ydre rum Organic Eprints
Dalsgaard, Anders; Jensen, Annette Nygaard; Baggesen, Dorte Lau.
Det ydre miljø er en vigtig kilde til smitstoffer i udendørs grise og økologiske grøntsager. Det viser resultater fra to forskningsprojekter på området.
Tipo: Newspaper or magazine article Palavras-chave: Food security; Food quality and human health Vegetables.
Ano: 2011 URL: http://orgprints.org/20312/13/20312.pdf
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Spread of salmonella in organic pigs Organic Eprints
Jensen, Annette Nygaard; Baggesen, Dorte Lau.
Pigs inoculated with Salmonella Typhimurium were grouped with non-infected tracerpigs to determine the transmission of salmonella between organic outdoor animals. The results indicated that the organic pigs were perceptive to infections but that the susceptibility varied considerably between pigs. Bacteriological examinations of soil and water samples from the pasture environment showed the ability of salmonella to survive in the non-host environment, and under some favoruable conditions pose an infection risk for new pigs introduced onto the contaminated pastures.
Tipo: Journal paper Palavras-chave: Pigs.
Ano: 2004 URL: http://orgprints.org/4269/1/4269.PDF
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The effect of a diet with fructan-rich chicory roots on intestinal helminths and microbiota with special focus on Bifidobacteria and Campylobacter in piglets around weaning Organic Eprints
Jensen, Annette Nygaard; Mejer, Helena; Mølbak, Lars; Langkjær, Maria; Jensen, Tim Kaare; Angen, Øystein; Martinussen, Torben; Klitgaard, Kirstine; Baggesen, Dorte Lau; Thamsborg, Stig Milan; Roepstorff, Allan.
The restrictions on the use of antibiotic and anthelmintic treatments in organic pig farming necessitate alternative non-medical control strategies. Therefore, the antibiotic and parasite-reducing effect of a fructan-rich (prebiotic) diet of dried chicory was investigated in free-ranging piglets. Approximately half of 67 piglets from 9 litters were experimentally infected with Ascaris suum and Trichuris suis in the suckling period (1 to 7 weeks of age) and 58 of the piglets were challenged daily with E. coli O138:F8 for 9 days after weaning to induce weaning diarrhoea. The litters were fed either chicory (30% DM) or a control diet. The effect of chicory on intestinal helminths, intestinal microbiota, especially Bifidobacteria and Campylobacter spp., and E....
Tipo: Journal paper Palavras-chave: Health and welfare.
Ano: 2010 URL: http://orgprints.org/18118/1/18118.pdf
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