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| Registros recuperados: 38 | |
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| Katakam, Kiran Kumar; Mejer, Helena; Dalsgaard, Anders; Kyyvsgaard, Niels Christian; Thamsborg, Stig Milan. |
| tEggs of Ascaris suum from pigs are highly resistant and commonly used as a conservativeindicator of pathogen inactivation during slurry storage. Eggs of Ascaridia galli, the poultryascarid, are also known to be highly resistant but the suitability as an indicator of pathogeninactivation has never been tested. Pig slurry has to be stored for several months to inac-tivate pathogens but chemical treatment of slurry may reduce this time. The suitability ofA. galli as an indicator of slurry sanitation was tested by comparing the survival of eggsof A. suum and A. galli in pig slurry. In addition, the effect of urea treatment on inactiva-tion of ascarid eggs in relation to storage time was also tested. Nylon bags with 10,000eggs of either species were placed in... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2014 |
URL: http://orgprints.org/27344/7/27344.pdf |
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| 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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| Sundar, Thapa; Meyling, Nicolai V.; Katakam, Kiran Kumar; Thamsborg, Stig Milan; Mejer, Helena. |
| Thick-shelled ascarid eggs have been reported to remain infective in the environment for several years, thus posing a prolonged risk of infection to animals and/or humans. The following in vitro study was therefore conducted to evaluate the negative impact of two species of naturally occuring soil microfungi (Pochonia chlamydosporia and Paecilomyces lilacinus), on the viability of Ascaridia galli, Toxocara canis and Ascaris suum eggs. Approximately 150 fresh eggs of individual ascarid species were embryonated on a 2% water agar in Petri dishes with or without a fungus (P. chlamydospria or P. lilacinus). On days 7, 14, 21, 28, 35 and 42 post experimental set up (p.s.), the viability of the eggs in each experimental group was evaluated (destructive... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare. |
| Ano: 2013 |
URL: http://orgprints.org/27371/7/27371.pdf |
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| 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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| Petersen, Heidi Huus; Jianmin, Wang; Katakam, Kiran Kumar; Mejer, Helena; Ståhl, Marie; Dalsgaard, Anders; Olsen, Annette; Thamsborg, Stig Milan; Enemark, Heidi. |
| Although pigs are commonly infected with Cryptosporidium and Giardia duodenalis, and thus potential reservoirs of zoonotic species (or genotypes), little is known about age-related infection levels, seasonal differences and genetic variation in naturally infected pigs. Thus, to characterise seasonal and age-related variation in prevalence and intensity of infections at farm level, (oo)cyst shedding was monitored at quarterly intervals (September 2011 to June 2012) in piglets (n=152), young pigs (n=234), finishers (n=230) and sows (n=240) from three organic, Danish farms. (Oo)cysts were quantified by immunofluorescence microscopy; and representative Cryptosporidium (n=75) and Giardia (n=67) positive subsamples were characterized by amplification and partial... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2014 |
URL: http://orgprints.org/27342/7/27342.pdf |
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| Bennedsgaard, Torben Werner; Thamsborg, Stig Milan; Vaarst, Mette; Enevoldsen, Carsten. |
| This paper focuses on the changes in production, herd health and veterinary treatments in Danish organic dairy herds during approximately eleven years based on historic data from herds converted to organic milk production before 1990 (old organic herds) compared to herds converted in 1995 and 1999-2000 and herds that are still conventional. Herd size, milk production, the shape of the lactation curve, somatic cell counts and veterinary treatments for mastitis, retained placenta and ketosis are compared over time and between herd groups. The old organic herds differed from the other three herd groups by having lower milk production per cow, lower somatic cell counts and fewer treatments of mastitis. Herds converted in 1995 and 1999-2000 were comparable to... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle. |
| Ano: 2003 |
URL: http://orgprints.org/4681/1/4681.pdf |
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| Blomstrand, Berit Marie; Ptochos, Sokratis; Enemark, Heidi; Thamsborg, Stig Milan; Aasen, Inga Marie; Steinshamn, Håvard; Athanasiadou, Spiridoula. |
| Gastrointestinal nematodes (GIN) in sheep are a common cause of reduced animal welfare and performance, and thus, high economical losses. The emerging drug resistance in GIN prompts for new methods in combating infections. Several studies have indicated an anti-parasitic effect of tannin-rich plants when included in the diet. The objective of this study was to assess the potential in vitro anthelmintic efficacy of tannin-rich extracts from bark of common Norwegian trees (spruce and pine) against GIN of sheep. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Sheep and goats; Health and welfare. |
| Ano: 2018 |
URL: http://orgprints.org/35025/1/Poster%20COMBAR%20Sept%202018.pdf |
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| Thapa, Sundar; Meyling, Nicolai V.; Katakam, Kiran Kumar; Thamsborg, Stig Milan; Mejer, Helena. |
| Thick-shelled eggs of ascarid nematodes have been reported to remain infective in the environment for several years, thus posing a prolonged risk of infection to animal livestock and/or humans. An in vitro study was therefore conducted to evaluate the negative impact of two species of soil microfungi, Pochonia chlamydosporia and Purpureocillium lilacinum (syn. Paecilomyces lilacinus), on the viability of Ascaridia galli, Toxocara canis and Ascaris suum eggs. Approximately 150 fresh eggs of individual ascarid species were embryonated on a 2% water agar in Petri dishes with or without a fungus (P. chlamydospria or P. lilacinum). On days 7, 14, 21, 28, 35 and 42 post experimental set up (p.s.), the viability of the eggs from each experimental group was... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare. |
| Ano: 2013 |
URL: http://orgprints.org/27372/7/27372.pdf |
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| Bennedsgaard, Torben Werner; Thamsborg, Stig Milan; Aarestrup, Frank Møller; Enevoldsen, Carsten; Vaarst, Mette; Christoffersen, Anna Bodil. |
| Quarter milk samples from cows with high risk of intramammary infection were examined to determine the prevalence of Staphylococcus aureus (SA) and penicillin resistant SA (SAr) in conventional and organic dairy herds and herds converting to organic farming in a combined longitudinal and cross-sectional study. 20 conventional herds, 18 organic herds that converted before 1995, and 19 herds converting to organic farming in 1999 or 2000 were included in the study. Herds converting to organic farming were sampled three times one year apart; the other herds were sampled once. Risk of infection was estimated based on somatic cell count, milk production, breed, age and lactation stage. The high-risk cows represented about 49 % of the cows in the herds. The... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2006 |
URL: http://orgprints.org/4714/1/4714_ny.pdf |
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| Katakam, Kiran Kumar; Thamsborg, Stig Milan; Kyvsgaard, Niels Christian; Dalsgaard, Anders; Mejer, Helena. |
| Indoor transmission of Ascaris suum partly depends on the physico-chemical conditions in bedding material. Temperature,pH, aqueous ammonia, moisture, occurrence and development of A. suum eggs were therefore compared in different areas(resting, intermediate and latrine) of two deep litter pens on an organic farm in four seasons. There was some variation, but mean ammonia levels were generally very low (1·0–2·6mM) and pH levels were moderate (8·04–8·88) in all three areas. Relatively, resting areas were characterized by overall moderate moisture (36%) and moderately high temperature (35·7 °C)levels. The area contained few eggs (50 eggs g−1 DM) of which 17% were viable, and though only 4% were larvated and 0·7% appeared infective, it was more than in the... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2014 |
URL: http://orgprints.org/27345/7/27345.pdf |
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| Spoolder, Hans; Biavati, Bruno; Borgsteede, Fred; Davies, David; Klocke, Peter; Maurer, Veronika; Nagel, Philip; Nicholas, Phillipa; van Krimpen, Marinus; Mejer, Helena; Modesto, Monica; Strozzi, Gian Paolo; Thamsborg, Stig Milan; Vermeer, Herman; Wagenaar, Jan-Paul; Zollitsch, Werner; Sundrum, Albert. |
| The QLIF project has targeted a variety of issues to make organic animal production (dairy cattle, pig, poultry) more safe, develop alternative methods to promote animal health and improve product quality. This workshop will discuss these aims as well as the QLIF achievements to date. It will also address our way of assessing the quality of our organic farms. We ask the question what the advantages are of doing this by looking at the output of a farm, such as yield, animal welfare and environmental issues. Alternatively, we also want to know what benefits there are in looking at how the farm is organised, via input factors such as housing design, nutrition, management quality. Two invited speakers will state their preference. Legislation, certification and... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare. |
| Ano: 2008 |
URL: http://orgprints.org/13351/2/qlif-workshop4-abstract-spoolder-etal-2008-livestock-systems.doc |
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| Bennedsgaard, Torben Werner; Thamsborg, Stig Milan; Vaarst, Mette. |
| Anvendelse af veterinære lægemidler i konventionel malkekvægsbrug og forventninger ved omlægning Langt hovedparten af forbruget af antibiotika i kvægbruget udgøres af smalspektrede penicilliner, der hovedsagelig benyttes ved behandling af mastitis. Landskontoret for Kvæg har skønnet, at der tilnærmelsesvist er sket en fordobling i forbruget af penicilliner fra 3500 kg aktivt stof i 1989 til 6789kg aktivt stof i 1995. Denne stigning falder sammen med indførelsen af EU-krav om maksimale tankcelletal fra 1992. Dette medførte en øget behandling af yverlidelser (Ministeriet for Fødevarer, Landbrug og Fiskeri, 1997, Skioldebrand et al., 1994). Denne stigning kan være sket såvel ved behandling af flere dyr som ved øget antal behandlinger af den enkelte... |
| Tipo: Report chapter |
Palavras-chave: Health and welfare. |
| Ano: 2000 |
URL: http://orgprints.org/13754/1/13754.pdf |
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| Mejer, Helena; Katakam, Kiran Kumar; Gautam, Susmita; Dalsgaard, Anders; Thamsborg, Stig Milan. |
| Ascaris suum is the most common intestinal worm in pigs irrespective of production system. However, organic farms which promote animal welfare (e.g. by providing pastures and bedding material) may further promote survival of the eggs through which the parasite is dispersed to new hosts. The parasite has a negative effect on production results and possibly impairs vaccines. A one year survey of 5 Danish organic farms therefore aimed at mapping the occurrence of parasite eggs in the farm environment, supplemented with laboratory and field studies, including serial necropsies of different age groups of pigs from 2 farms to monitor infection levels. The combined results showed that eggs were present on farrowing and weaning pastures, ensuring continuous... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare. |
| Ano: 2013 |
URL: http://orgprints.org/27346/7/27346.pdf |
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| Thapa, Sundar; Meyling, Nicolai V.; Katakam, Kiran Kumar; Thamsborg, Stig Milan; Mejer, Helena. |
| Thick-shelled eggs of animal-parasitic ascarid nematodes can survive and remain infective in the environment for years. The present study was conducted to assess the effect of two species of soil microfungi (Pochonia chlamydosporia and Purpureocillium lilacinum) on the development and survival of eggs (all of faecal origin) of three ascarid species, Ascaridia galli (chicken roundworm), Toxocara canis (canine roundworm) and Ascaris suum (pig roundworm), in vitro. Ascarid eggs were embryonated on water agar with or without one fungal species, and viability of the eggs was evaluated on days 7, 14, 21, 28, 35 and 42 post set up (p.s.). By day 14 p.s., P. chlamydosporia had reduced the viability of A. galli and T. canis eggs by 70-86% and 52-67%, respectively,... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2014 |
URL: http://orgprints.org/27341/7/27341.pdf |
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| Peña-Espinoza, Miguel; Thamsborg, Stig Milan; Desrues, Olivier; Hansen, T. V. A.; Enemark, Heidi L.. |
| Two experiments studied the effects of dietary chicory against gastrointestinal nematodes in cattle. In Experiment (Exp.) 1, stabled calves were fed chicory silage (CHI1; n = 9) or ryegrass/clover hay (CTL1; n = 6) with balanced protein/energy intakes between groups. After 16 days, all calves received 10 000 Ostertagia ostertagi and 66 000 Cooperia oncophora third-stage larvae (L3) [day (D) 0 post-infection (p.i.)]. In Exp. 2, calves were assigned to pure chicory (CHI2; n=10) or ryegrass/clover (CTL2; n = 10) pastures. After 7 days, animals received 20 000 O. ostertagi L3/calf (D0 p.i.) and were moved regularly preventing pasture-borne infections. Due to poor regrowth of the chicory pasture, CHI2 was supplemented with chicory silage. At D40 p.i. (Exp. 1)... |
| Tipo: Journal paper |
Palavras-chave: "Organics" in general; Farming Systems; Health and welfare. |
| Ano: 2016 |
URL: http://orgprints.org/30116/1/Pe%C3%B1a-Espinoza%20et%20al%202016_Parasitology.pdf |
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| Registros recuperados: 38 | |
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