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| Höjer, Annika; Adler, Steffen; Purup, Stig; Hansen-Møller, Jens; Martinsson, Kjell; Steinshamn, Håvard; Gustavsson, Anne-Maj. |
| Phytoestrogens are hormone-like substances in plants that can substantially influence human health (positively or negatively), and when fed to dairy cows are partly transferred to their milk. The aim of this study was to investigate effects of varying the botanical composition and regrowth interval of legume-grass silage on phytoestrogen intake and milk phytoestrogen concentrations. In one experiment, 15 Swedish Red dairy cows were fed two- or three-cut red clover-grass silage, or two-cut birdsfoot trefoil-grass silage. In a second experiment, 16 Norwegian Red dairy cows were fed short-term ley silage with red clover or long-term ley silage with white clover, and the effects of supplementation with α-tocopherol were also tested. There were high... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle; "Organics" in general; Pasture and forage crops. |
| Ano: 2012 |
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| Höjer, Annika; Martinsson, Kjell; Gustavsson, Anne-Maj. |
| Fytoöstrogener är ett samlingsnamn för östrogenliknande ämnen som finns i växter, t ex i baljväxter som klöver och lusern. Inom djurproduktionen beror intresset för fytoöstrogener på de effekter som de kan ha på t ex fertiliteten hos får. Det finns även en stor marknad för humana preparat, ofta baserade på rödklöver, som används som behandling under klimakteriet istället för syntetiska östrogentillskott. Fytoöstrogener delas in i olika grupper baserat på kemisk struktur. De största grupperna är isoflavoner, som finns i vallbaljväxter som rödklöver, och lignaner, som finns i både baljväxter och spannmål. Daidzein och formononetin är exempel på isoflavoner i vallväxter och de kan med hjälp av vommikrober metaboliseras till equol. Secoisolariciresinol och... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle "Organics" in general Pasture and forage crops Food security; Food quality and human health. |
| Ano: 2011 |
URL: http://orgprints.org/18830/1/Fyto%C3%B6strogener_i_foder_och_mj%C3%B6lk.docx |
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| Höjer, Annika; Martinsson, Kjell; Gustavsson, Anne-Maj. |
| The effect of silage botanical composition and harvest system on organic milk composition was studied in a feeding trial. Twenty-four Swedish Red dairy cows in mid lactation were allocated randomly to three treatments in a 3×3 Latin square design with each period of three weeks. The treatments were birdsfoot trefoil (Lotus corniculatus L.)/grass silage in two-cut system (B, 16 % birdsfoot trefoil), red clover (Trifolium pratense L.)/grass silage in two-cut system (R2, 42 % red clover) and red clover/grass silage in three-cut system (R3, 38 % red clover). Milk samples from the last week in each period were analyzed for fat and protein concentration. Milk yield was 28.7 ±1.0, 30.3 ±3.2 and 28.6 ±1.4 kg ECM day-1 (mean and SD) for treatment B, R2 and R3... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle "Organics" in general Pasture and forage crops Food security; Food quality and human health. |
| Ano: 2010 |
URL: http://orgprints.org/18295/1/EGF_2010_KSLA.pdf |
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| Höjer, Annika; Martinsson, Kjell; Jensen, Søren K.; Gustavsson, Anne-Maj. |
| Red clover and high proportion of forage in dairy cow diet increases the concentration of bioactive substances in milk, e.g. unsaturated fatty acids and antioxidants. In the present experiment twenty-four Swedish Red dairy cows were fed three silages in a Latin Square design to study the effect of silage botanical composition and harvest time on milk fatty acid, α-tocopherol and β-carotene concentration. The silages were red clover/grass silage (mixture of first and second cut), red clover/grass silage (mixture of first, second and third cut) and birdsfoot trefoil/grass silage (mixture of first and second cut). Botanical composition and harvest system affected silage vitamin and fatty acid concentration with higher concentrations of α-linolenic acid,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle "Organics" in general Pasture and forage crops Food security; Food quality and human health. |
| Ano: 2010 |
URL: http://orgprints.org/18829/1/18829.pdf |
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| Höjer, Annika; Adler, Steffen; Martinsson, Kjell; Jensen, Søren K.; Steinshamn, Håvard; Thuen, Erling; Gustavsson, A.-M.. |
| Two feeding experiments were performed to study the effects of silage botanical composition, regrowth interval and α-tocopherol supplementation on the fatty acid (FA) composition and α-tocopherol, β-carotene and retinol concentrations of milk. In experiment 1, 24 Swedish Red dairy cows were fed two- or three-cut red clover-grass silages (R2 and R3, respectively), or two-cut birdsfoot trefoil-grass silage (B2). In experiment 2, 16 Norwegian Red dairy cows were fed short-term ley silage with red clover (S3) or long-term ley silage with white clover (L3) in combination with supplementation of RRR-α-tocopheryl acetate (1,600 mg/day). The FA proportions in the milk and the recoveries of C18:2n-6 and C18:3n-3 were higher on the red clover diets R2 and S3 than on... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle; "Organics" in general; Pasture and forage crops. |
| Ano: 2012 |
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| Bystrom, Sara; Jonsson, Simon; Martinsson, Kjell. |
| This report was presented at the UK Organic Research 2002 Conference. A study (the Öjebyn Project) was conducted to determine differences between organic and conventional dairy farming systems. Comparisons of feed intake, milk production, live weight (LW), feed efficiency and animal health were conducted, based on records from 145 dairy cows (238 parities). A lower daily metabolisable energy (ME) intake, lower milk yield and a higher protein content were recorded in the organic herd during the first ten weeks of lactation. No differences were recorded between the systems in either average total DM intake or efficiency of feed conversion, calculated as MJ of feed/kg of energy-corrected milk (ECM). There were a trend to lower LW change and better health in... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farming Systems; Dairy cattle; Feeding and growth. |
| Ano: 2002 |
URL: http://orgprints.org/8390/1/bystrom_organic_conventional_dairy_ojebyn.pdf |
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| Adler, Steffen; Höjer, Annika; Njåstad, Kari Marie; Purup, Stig; Hansen-Møller, Jens; Thuen, Erling; Gustavsson, Anne-Maj; Martinsson, Kjell; Steinshamn, Håvard. |
| Engdriftsmåte som gir høyt innhold av rødkløver i grovfôret gir høyt innhold av equol i melk. Produksjonssystem hadde mindre betydning i denne studien. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle Pasture and forage crops Farming Systems Food security; Food quality and human health. |
| Ano: 2013 |
URL: http://orgprints.org/23137/1/Adler%20et%20al%202013%20Fyto%C3%B8strogen%20i%20melk%20og%20driftsm%C3%A5te%20HFM2013.pdf |
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| Fall, DVM Nils; Emanuelson, Professor 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: Health and welfare. |
| Ano: 2008 |
URL: http://orgprints.org/13099/1/PVM%2C_Fall_et_al.%2C2008.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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