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| Registros recuperados: 12 | |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 >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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 ( >= 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 |
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| Registros recuperados: 12 | |
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