Consulta: creatorFacets:"Emanuelson, Ulf"
Registros recuperados: 18
Data/hora: 03/06/2024 06:43:22

A participatory approach to design monitoring indicators of production diseases in organic dairy farms
Provedor de dados: 21
Autores: Duval, Julie; Fourichon, Christine; Madouasse, Aurélien; Sjöström, K.; Emanuelson, Ulf; Bareille, Nathalie.
Production diseases have an important negative effect on the health and welfare of dairy cows. Although organic animal production systems aim for high animal health levels, compliance with European organic farming regulations does not guarantee that this is achieved. Herd health and production management (HHPM) programs aim at optimizing herd health by preventing disease and production problems, but as yet they have not been consistently implemented by farmers. We hypothesize that one reason is the mismatch between what scientists propose as indicators for herd health monitoring and what farmers would like to use. Herd health monitoring is a key element in HHPM programs as it permits a regular assessment of the functioning of the different components of...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Technology transfer; Health and welfare.
Ano: 2016
URL: http://orgprints.org/33562/1/Duval16PVM.pdf

Milk yield, udder health and reproductive performance in Swedish organic and conventional dairy herds
Provedor de dados: 21
Autores: Fall, Nils; Emanuelson, Ulf.
Organic dairy farming is an expanding segment of the dairy sector where cow management differs from the conventional model in many respects. Thus, a comparative evaluation of disease and welfare status in organically and conventionally managed dairy cows is required. Assessment of milk yield, udder health and reproductive performance (RP) was done in 20 organically and 20 conventionally managed Swedish dairy herds. In accordance with earlier findings we confirmed lower milk yield in organic cows. Udder health and RP were chosen as indicators of animal health in view of their clinical relevance and the availability of appropriate data bases providing good background knowledge for further animal health assessment. No obvious differences were found in the...
Tipo: Journal paper
Palavras-chave: Health and welfare.
Ano: 2009

Reproductive performance, general health, and longevity of dairy cows at a Swedish research farm with both organic and conventional production
Provedor de dados: 21
Autores: Fall, Nils; Forslund, Kristina; Emanuelson, Ulf.
Data from a 12-year longitudinal study was used to compare reproductive performance (RP), general animal health, and longevity in conventionally managed dairy cows and organically managed dairy cows. All cows were held at the same farm and managed by the same personnel. The management of the groups was basically alike, with the main exception being differences in feed composition and feeding regimes. Management of the organic group was done according to the Swedish standards for organic farming, which are certified by the International Federation of Agricultural Movements. The data for this study included all cows calving from September 1, 1990 to August 31, 2001; in total 154 organically and 156 conventionally managed animals. Calving-to-first...
Tipo: Journal paper
Palavras-chave: Health and welfare.
Ano: 2008
URL: http://orgprints.org/14869/1/LS%2CFall_et_al.%2C2008.pdf

How can veterinary epidemiology contribute to sustainable animal production?
Provedor de dados: 21
Autores: Emanuelson, Ulf.
Sustainable animal production is characterised by conservation of resources, environmental care, good animal health and welfare, and should agree with consumer demand and be profitable for the producer. The relative importance of most of these characteristics - and how they are realised in practise - depends strongly on the situation at hand, due for instance to social and political conditions. However, irrespective of differences in local conditions with respect to available resources - waste management etc - good animal health should always be an integrated part of a sustainable animal production, both from the animal perspective and from the human health perspective. Epidemiology is the study of the distribution of diseases in populations and of risk...
Tipo: Conference paper, poster, etc.
Palavras-chave: Environmental aspects; Research methodology and philosophy; "Organics" in general; Animal husbandry.
Ano: 2007
URL: http://orgprints.org/11190/1/Emanuelson_epi_sust_EAAP_07.pdf

Mastitis and related management factors in certified organic dairy herds in Sweden
Provedor de dados: 21
Autores: Hamilton, Cecilia; Emanuelson, Ulf; Forslund, Kristina; Hansson, Ingrid; Ekman, Torkel.
Background    Mastitis is one of the major threats to animal health, in organic farming as well as conventional. Preliminary studies of organic dairy herds have indicated better udder health in such herds, as compared to conventional herds. The aim of this paper was to further study mastitis and management related factors in certified organic dairy herds.    Methods    An observational study of 26 certified organic dairy herds in mid-eastern Sweden was conducted during one year. A large-animal practitioner visited the herds three times and clinically examined and sampled cows, and collected information about general health and management routines. Data on milk production and disorders treated by a veterinarian in the 26 herds, as well as in 1102...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Health and welfare.
Ano: 2006
URL: http://orgprints.org/9114/1/1751%2D0147%2D48%2D11.pdf

Capturing systemic interrelationships by an impact analysis to help reduce production diseases in dairy farms
Provedor de dados: 21
Autores: Krieger, Margret; Hoischen-Taubner, Susanne; Emanuelson, Ulf; Blanco-Penedo, Isabel; De Joybert, Manon; Duval, Julie; Sjöström, Karin; Jones, Jones J.; Sundrum, Albert.
Production diseases, such as metabolic and reproductive disorders, mastitis, and lameness, emerge from complex interactions between numerous factors (or variables) but can be controlled by the right management decisions. Since animal husbandry systems in practice are very diverse, it is difficult to identify the most influential components in the individual farm context. However, it is necessary to do this to control disease, since farmers are severely limited in their access to resources, and need to invest in management measures most likely to have an effect. In this study, systemic impact analyses were conducted on 192 organic dairy farms in France, Germany, Spain, and Sweden in the context of reducing the prevalence of production diseases. The impact...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Farming Systems; Health and welfare.
Ano: 2017
URL: http://orgprints.org/33564/1/Duval17AgriculturalSystems.pdf

Evaluation of the impact of a Herd Health and Production Management programme in organic dairy cattle farms: a process evaluation approach
Provedor de dados: 21
Autores: Duval, Julie; Bareille, Nathalie; Madouasse, Aurélien; De Joybert, Manon; Sjöström, K.; Emanuelson, Ulf; Bonnet-Beaugrand, Florence; Fourichon, Christine.
Animal health planning activities are not always providing a satisfactory positive impact on herd health and welfare. Moreover, evaluating the impact of advisory programmes is complex due to multiple interacting elements that influence its outcome. Therefore, measuring solely health outcomes is not sufficient: the whole process of the implementation and use of such programmes should be evaluated. In order to evaluate the impact of an intervention with a Herd Health and Production Management (HHPM) programme a process evaluation framework was designed and used. The intervention involved 20 organic dairy cattle farmers and their advisors, in both France and Sweden. In both countries 20 organic dairy farms were selected as control herds. The evaluation of the...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Health and welfare.
Ano: 2017
URL: http://orgprints.org/33561/1/Duval17Animal.pdf

An Observational Study on Early-Lactation Metabolic Profiles in Swedish Organically and Conventionally Managed Dairy Cows
Provedor de dados: 21
Autores: Fall, Nils; Gröhn, Yrjö T.; Forslund, Kristina; Essén-Gustafsson, Birgitta; Niskanen, Rauni; Emanuelson, Ulf.
The aim of this observational study was to compare indicators of energy balance in early lactation in organically managed dairy cows (OMC) and conventionally managed dairy cows (CMC) under field conditions. The diets of OMC and CMC differ as a consequence of the rules and principles of organic dairy farming. The study was based on clinical examinations and blood samples from cows within the range from 2 wk prepartum to 6 wk postpartum, collected from 20 organic and 20 conventional dairy farms with 3 visits at each farm. The farms were located in a southeastern area of Sweden and ranged in size from 45 to 120 cows. The blood parameters selected to reflect energy metabolism were nonesterified fatty acids, β-hydroxybutyrate, glucose, and insulin. At clinical...
Tipo: Journal paper
Palavras-chave: Health and welfare; Feeding and growth.
Ano: 2008
URL: http://orgprints.org/14873/1/JDS.Fall_et_al.2008.pdf

Bovine respiratory syncytial virus and bovine coronavirus in Swedish organic and conventional dairy herds
Provedor de dados: 21
Autores: Wolff, Cecilia; Emanuelson, Ulf; Ohlson, Anna; Alenius, Stefan; Fall, Nils.
Background: Infections with bovine respiratory syncytial virus (BRSV) and bovine coronavirus (BoCV) are endemic  to the cattle populations in most countries, causing respiratory and/or enteric disease. It has been demonstrated that herds can remain free from these infections for several years also in high prevalence areas. Organically managed (OM) dairy herds have been shown to have lower seroprevalence of both viruses compared to conventionally managed (CM) herds. The objective of this study was to challenge the hypothesis of a lower occurrence of BRSV and BoCV in OM compared to CM dairy herds.  In November 2011, May 2012 and May 2013 milk samples from four homebred primiparous cows were collected in  75 to 65 OM and 69 to 62 CM herds. The antibody status...
Tipo: Journal paper
Palavras-chave: Health and welfare.
Ano: 2015
URL: http://orgprints.org/28740/1/s13028-014-0091-x.pdf

Ekomjölk – djurhälsa i ekologiska mjölkbesättningar
Provedor de dados: 21
Autores: Fall, Nils; Forslund, Kristina; Niskanen, Rauni; Emanuelson, Ulf.
Målsättningen med projektet är:  • Ökad generell kunskap om hälsoläget i ekologiska besättningar med mjölkproduktion.  • Att bedöma om den officiella sjukdomsregistreringen är ett användbart redskap för att följa upp djurhälsan i ekologiska besättningar.  • Att studera om en ekologisk foderstat ökar risken för ämnesomsättnings- och fertilitetsstörningar hos mjölkkor.    Projektets nuvarande status:  Första besättningsbesöken inom delstudie I har genomförts och besök 2 planeras just nu, medan delstudie II och III kommer att initieras inom kort.
Tipo: Conference paper, poster, etc.
Palavras-chave: Dairy cattle; Health and welfare.
Ano: 2005
URL: http://orgprints.org/6497/1/konfrapport2005_Fall_283.pdf

Effects of turning to 100% organic feed on metabolic status of Swedish organic dairy cows
Provedor de dados: 21
Autores: Blanco-Penedo, Isabel; Fall, Nils; Emanuelson, Ulf.
Since January 2008 the ration for organic herds has been required to be 100% organic (Regulation No. 889/2008). However, this may not satisfy the high energy demands of early lactation cows. We thus investigated the possible effects of 100% organic feed on the energy balance in Swedish organic dairy herds as indicated by the following blood parameters (n = 739 observations): Beta-hydroxybutyrate (BHBA), non-esterified fatty acid (NEFA) and insulin, and the occurrence of clinical ketosis (n = 8769 observations). Thirteen organic and 13 conventional herds were visited and blood samples from 81 cows around parturition ( &gt;= 3 cows per herd) were used. The metabolic status of the same herds under the previous rules was available for comparison. The BHBA,...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Animal husbandry; Health and welfare.
Ano: 2012
URL: http://orgprints.org/25063/1/livsci_143_242_248.pdf

Exposure to pasture borne nematodes affects individual milk yield in Swedish dairy herds
Provedor de dados: 21
Autores: Blanco-Penedo, Isabel; Höglund, Johan; Fall, Nils; Emanuelson, Ulf.
The association between exposure to gastrointestinal nematode (GIN) parasitism, indicated by elevated individual optical density ratio (ODR) to Ostertagia ostertagi, and individual milk production was analysed in dairy cows. The multivariable analysis also accounted for other sources of variation than exposure to GIN parasitism. Intra- and inter-herd variation in parasite exposure was also evaluated. Organic and conventional herds located in south-east Sweden (13 herds per system) were visited during the housing period 2009-2010. Levels of all major pasture-borne helminths in Sweden (O. ostertagi, Fasciola hepatica and Dictyocaulus viviparus) were determined in bulk tank milk, cow milk and serum (only for O. ostertagi). Their specific antibodies were...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Animal husbandry; Health and welfare.
Ano: 2012
URL: http://orgprints.org/25066/1/vetpar%20188%2093_98.pdf

Prevalence of production disease related indicators in organic dairy herds in four European countries
Provedor de dados: 21
Autores: Krieger, Margret; Sjöström, Karin; Blanco-Penedo, Isabel; Madouasse, Aurélien; Duval, Julie; Bareille, Nathalie; Fourichon, Christine; Sundrum, Albert; Emanuelson, Ulf.
The aim of this study was to assess the prevalence of production disease related indicators on 192 organic dairy farms in Germany, Spain, France and Sweden. The following indicators were used: raised somatic cell count (&amp;gt;100,000 cells/ml, subclinical mastitis), high fat/protein ratio (risk of ketosis), low milk fat (risk of acidosis), prolonged calving interval, clinical lameness, and mortalities of calves and cows. Prevalence of the assessed indicators varied widely between farms and countries. The median prevalence (interquartile range) were 51.3% (15.4) for subclinical mastitis, 10% (7.7) for risk of ketosis, 3.2% (4.7) for risk of acidosis, 42% (20.7) for prolonged calving interval, and 14.2% (20.4) for clinical lameness. The incidence risk of...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Health and welfare.
Ano: 2016
URL: http://orgprints.org/33565/1/Krieger17LivestockScience.pdf

Fatty acid content, vitamins and selenium in bulk tank milk from organic and conventional Swedish dairy herds during the indoor season
Provedor de dados: 21
Autores: Fall, Nils; Emanuelson, Ulf.
Fatty acids, vitamins and minerals in milk are important for the human consumer, the calf and the cow. Studies indicate that milk from organic and conventional dairy herds may differ in these aspects. The aim of this study was therefore to investigate whether there are differences in the fatty acid composition and concentration of vitamins and selenium in milk between organic and conventional herds in Sweden. Bulk tank milk was sampled in 18 organic and 19 conventional dairy herds on three occasions during the indoor season 2005-2006. Herd characteristics were collected by questionnaires and from the official milk recording scheme. Multivariable linear mixed models were used to evaluate the associations between milk composition and type of herd, while...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Animal husbandry; Health and welfare.
Ano: 2011
URL: http://orgprints.org/25067/1/Revised_3212.pdf

Claw health in organic and conventional dairy herds
Provedor de dados: 21
Autores: Emanuelson, Ulf; Fall, Nils.
Housing, management and production intensity are factors known to affect the claw status of dairy cows. Management and production intensity are generally also aspects that distinguish organic dairy herds from conventional. It is therefore possible that the claw health of organic and conventional dairy cows is different, but to our knowledge this has not been studied to any great extent. The aim of this study was therefore to investigate if there were differences in claw health status, recorded at routine claw trimmings, between organic and conventional dairy herds in Sweden. The data originated from a field study of 20 organic and 20 conventional dairy herds, where information on herd characteristics were collected by questionnaires administered at visits...
Tipo: Conference paper, poster, etc.
Palavras-chave: Dairy cattle; Health and welfare.
Ano: 2007
URL: http://orgprints.org/11110/1/Abstract_claw_ICPD_07.pdf

Vitamins and selenium in bulk tank milk of organic and conventional dairy farms
Provedor de dados: 21
Autores: Emanuelson, Ulf; Fall, Nils.
Vitamins in milk are important for the human consumer, the calf and the cow. They are also important for the dairy industry because some of them affect the risk for off-flavour. Studies indicate that milk from organic and conventional dairy farms may differ in these aspects. The aim of this study was therefore to investigate whether there are differences in the concentration of vitamins and selenium in milk between organic and conventional farms in Sweden. Bulk tank milk was sampled in 20 organic and 20 conventional dairy farms at three occasions during the indoor season. Concentrations of α-tocopherol, β-carotene and retinol were determined by HPLC and selenium by hydrid generation inductively coupled plasma atomic emission spectrometry. Herd...
Tipo: Conference paper, poster, etc.
Palavras-chave: Food security; Food quality and human health Dairy cattle.
Ano: 2007
URL: http://orgprints.org/11163/1/Paper_e%2Dvit_EAAP_07.pdf

Reduced likelihood of bovine coronavirus and bovine respiratory syncytial virus infection on organic relative to conventional dairy farms in Sweden.
Provedor de dados: 21
Autores: Bidokhti, M.R.M.; Tråven, Madeleine; Fall, Nils; Emanuelson, Ulf; Alenius, Stefan.
The prevalence of antibodies to bovine coronavirus (BCV) and bovine respiratory syncytial virus (BRSV) infections was studied in 20 conventional and 20 organic dairy herds The organic farms had produced 'certified' milk for at least 2 years On two occasions, with a 1-year interval, 699 serum samples from 624 peri-parturient cows were tested by ELISA for antibodies to BCV and BRSV. Accompanying data relating to the sampled animals were collected in order to identify potential factors associated with increased antibody prevalence. The antibody prevalence was high at both sampling times with approximately 85% and 80% of animals positive for antibodies to BCV and to BRSV, respectively Conventional herds had a significantly higher mean antibody prevalence to...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Health and welfare.
Ano: 2009
URL: http://orgprints.org/25065/1/vj%20182%20436_440%20Bidokhti.pdf

Udder health at a Swedish research farm with both organic and conventional dairy cow management
Provedor de dados: 21
Autores: Fall, Nils; Emanuelson, Ulf; Martinsson, Kjell; Jonsson, Simon.
Our aim was to compare udder health in groups of organically and conventionally managed cows, using data from a longitudinal study in a Swedish dairy-research farm. Management of the groups was identical except for feed composition and the feeding regimen. Our dataset included all lactating cows calving from 1 September 1990 to 31 August 2001 (145 organically and 151 conventionally managed cows).    Udder health was assessed by the geometric average somatic-cell count (SCC) within 150 days after calving, by the number of monthly SCC tests &gt;200,000 cells/ml within 150 days after calving and by presence of lactations with veterinary-treated cases of clinical mastitis. The effect of animal group was analysed by multivariable linear, Poisson and...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Health and welfare.
Ano: 2008
URL: http://orgprints.org/25064/1/pvm_83_186_195.pdf