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| Registros recuperados: 10 | |
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| Heckendorn, Felix; Amsler, Zivile; Krenmayr, Ilse; Perler, Erika; Maurer, Veronika. |
| Gastro-intestinal nematodes (GIN) are the most important problem in small ruminant production with regard to animal welfare and economics. The control of GIN currently relies almost exclusively on the use of synthetic anthelmintics. This is unsatisfactory for organic as well as for conventional small ruminant farmers because of rapid increase of resistant GIN populations and risk of residues in meat and milk. Alternatives to synthetic anthelmintics are therefore needed. This poster presents the main alternative control strategies for GIN. The strategies are divided into measures aimed at freeliving GIN stages (grazing management, biological control) and at stages within the host (genetic resistance, vaccination, anthelmintic plants, feeding... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare; Breeding and genetics; Feeding and growth. |
| Ano: 2009 |
URL: http://orgprints.org/14316/1/Heckendorn_14316.pdf |
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| Heckendorn, Felix; Werne, Steffen; Maurer, Veronika; Perler, Erika; Amsler, Zivile; Probst, Johanna; Zaugg, Cornelia; Krenmeyr, Ilse. |
| Gastrointestinal nematodes (GIN) are one of the most important problems affecting health and therefore performance and welfare in small ruminant husbandry. The control of these parasites in the past strongly relied on the repeated use of anthelmintic drugs. This has led to nematode populations which are resistant to most of the currently available anthelmintics. Furthermore customer’s demands for organic and residue free animal products are increasing. The aforementioned problems have given a strong impetus for the development of new non-chemical strategies to control GIN. Previous research has pointed out the anthelmintic potential of sainfoin (Onobrychis viciifolia, cv. Visnovsky) and other tanniferous (CT) feed sources in goats and lambs infected with... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth; Sheep and goats; Health and welfare. |
| Ano: 2013 |
URL: http://orgprints.org/23305/1/sainfoin_Planta_Medica_2013_79_1125.pdf |
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| Maurer, Veronika; Amsler, Zivile; Perler, Erika; Heckendorn, Felix. |
| The aim of our experiments was to investigate the transmission and infectivity of the two main helminth parasites of poultry (Ascaridia galli and Heterakis gallinarum) under different run and litter management regimes. In experiment (a) two stocking rates were simulated in outdoor runs and the effect of a simple management practice (mowing) on helminth transmission was studied during two subsequent flocks. Stocking rate seemed not to change helminth transmission patterns and repeated mowing of runs did not reduce helminth infections. Lower stocking rates led to a substantial improvement of the run vegetation. In experiment (b) two litter management regimes (replace or add litter material) were compared to unmanaged litter with regard to... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare. |
| Ano: 2009 |
URL: http://orgprints.org/14106/1/Maurer_14106.pdf |
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| Maurer, Veronika; Perler, Erika; Heckendorn, Felix. |
| The aim of this study was to test the effectiveness of physically acting substances (oils and silicas) and plant preparations for the control of the poultry red mite Dermanyssus gallinae (De Geer 1778). Reproduction and survival of fed D. gallinae females were evaluated in vitro for a total of 168 h using the ‘‘area under the survival curve’’ (AUC) to compare survival of the mites between treatments. Four oils (two plant oils, one petroleum spray oil and diesel), one soap, three silicas (one synthetic amorphous silica, one diatomaceous earth (DE) and one DE with 2% pyrethrum extract) and seven plant preparations (derived from Chrysanthemum cineariaefolium, Allium sativum, Tanacetum vulgare, Yucca schidigera, Quillaja saponaria, Dryopteris filix-mas, and... |
| Tipo: Journal paper |
Palavras-chave: Poultry; Health and welfare. |
| Ano: 2009 |
URL: http://orgprints.org/15721/1/Maurer_2009_Exp_Appl_Acarol.pdf |
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| Maurer, Veronika; Amsler, Zivile; Heckendorn, Felix; Koller, Martin; Perler, Erika; Zeltner, Esther. |
| Layer runs are often bare and loaded with nutrients and with infectious stages of helminths. Various management strategies are recommended in order to better distribute the hens in the run, thereby preventing local accumulation of droppings and related problems. However, little is known about the impact of those strategies. A series of on farm experiments has been performed in order to test the effects of flock size and of artificial structures on the dispersal of the hens in the run. Further studies evaluated the effects of mowing and run size as well as rotational use of runs on turf quality, nutrient load in the soil and on the infection of the hens with internal parasites. As a summary, introducing structures or applying a rotational management... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare; Poultry. |
| Ano: 2012 |
URL: http://orgprints.org/21732/1/maurer-etal-2012-lbf_sh_362-p153-155.pdf |
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| Grohmann, Markus; Winckler, Christoph; Perler, Erika; Isensee, Anne; Christ, Benedikt; Amsler, Zivile; Werne, Steffen; Maurer, Veronika; Heckendorn, Felix. |
| The aim of this field study was to investigate interactions between gastro-intestinal nematode (GIN) infection, milk performance and age in goats in order to identify animal groups with higher susceptibility to GIN. On 3 farms (farm A: n = 29, farm B: n = 33, farm C: n = 117 milking goats) fecal egg count reduction tests (FECRT) were performed in summer. All 179 milking goats were enrolled in FECRT and individual milk performance was recorded before and after FEC for FECRT. Furthermore, in early summer and autumn bulk fecal samples were cultured for every farm and GIN genera were determined. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Animal husbandry; Breeding and genetics; Sheep and goats; Health and welfare. |
| Ano: 2012 |
URL: http://orgprints.org/21676/1/CAPARA_Gran_Canaria_Abstract_Grohmann.pdf |
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| Heckendorn, Felix; Perler, Erika; Isensee, Anne; Amsler, Zivile; Werne, Steffen; Grohmann, Markus; Uzunoglu, Ferit; Saratsis, Anastasios; Maurer, Veronika; Stricker, Christian. |
| In Australia and New Zealand the formulation of breeding values for GIN resistance led to large selection programs in sheep successfully improving genetic resistance to GIN. Compared to sheep, the progress with respect to breeding for GIN resistance for various reasons has been much slower in goats. Data on heritabilities of potential auxiliary traits for selection and knowledge about their genetic correlation to production traits is limited. The present Swiss study was designed to fill this gap. A total of 1.500 goats (20 flocks) of the Alpine and Saanen breed were enrolled in the study. They were individually phenotyped twice for faecal egg count (FEC), FEC of Haemonchus (HCFEC; using fluorescin based differentiation of eggs), FAMACHA eye scores and... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding and genetics; Sheep and goats; Health and welfare. |
| Ano: 2013 |
URL: http://orgprints.org/24879/1/abstract_genetics_capara_berlin.docx |
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| Maurer, Veronika; Perler, Erika. |
| Control of the poultry red mite Dermanyssus gallinae is a challenge for organic as well as conventional egg producers. In organic agriculture, control should be attempted by mechanically acting substances (e.g. oils or diatomaceous earth), before acaricides are applied. Diatomaceous earth (DE) without acaricides was at least as effective as DE supplemented with pyrethrum or essential oils and a liquid formulation of silica in vitro. In on farm experiments, DE was effective during a limited period only, whereas the liquid formulation had a very good residual effect over several weeks. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Poultry; Health and welfare. |
| Ano: 2006 |
URL: http://orgprints.org/7274/1/Maurer_Dermanyssus_Odense.pdf |
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| Registros recuperados: 10 | |
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