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| Registros recuperados: 24 | |
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| Adler, Steffen; Steinshamn, Håvard; Thuen, Erling; Jensen, Søren K.; Hansen-Møller, Jens. |
| Surfôr fra kortvarig eng (KS) hadde lavere innhold av C18:3c9,12,15 enn surfôr fra langvarig eng(LS)og raigrassurfôr. Likevel ga surfôr fra KS høyest innhold av C18:3c9,12,15 i melk. Årsaken var redusert hydrogenering i vomma. Dette gjaldt også summen av alle umettede C18-fettsyrer men ikke C18:1c9 eller C18:2c9,12. Årsaken til redusert hydrogenering for KS kan være rødkløverens innhold av PPO. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops Food security; Food quality and human health Animal husbandry Feeding and growth. |
| Ano: 2011 |
URL: http://orgprints.org/18817/4/18817.pdf |
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| Steinshamn, Håvard; Thuen, Erling. |
| Red (RC) or white (WC) clover were grown in mixture with grasses, ensiled and offered to dairy cows in early lactation over two successive years (48 cows per year) to compare grassland yield, feed intake, milk production and milk quality. The crops were ensiled in round bales and proportional mixtures of the second and third cut prepared each year were used to ensure that the silage treatments were representative of the crop. In addition to silage type, concentrate supplementation, without and with (10 kg/day), was included as a factor in a 2×2 factorial, continuous experiment. Total dry matter (DM) yield, silage chemical composition and totalDMintake was hardly affected by silage type. There was no effect of silage type on milk yield and milk constituents... |
| Tipo: Journal paper |
Palavras-chave: Food security; Food quality and human health Dairy cattle Feeding and growth. |
| Ano: 2008 |
URL: http://orgprints.org/13811/1/SteinshamnLIVSCI687.pdf |
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| Thuen, Erling; Breivik, J.; Steinshamn, H.; Volden, H.. |
| Daglig opptak av surfôrtørrstoff, energi og protein var langt høgere hos NRF kyrne enn STN kyrne. NRF kyrne hadde også et påviselig høgere opptak av grovfôr og NDF enn STN kyrne uttrykt per 100 kg kroppsvekt.STN kyrne la mer på seg enn NRF kyrne, og kyrne som fikk kraftfôr la mer på seg enn kyr uten kraftfôr, men verken rase eller kraftfôrnivå hadde signifikant effekt på dyras vektendring. Det ble ikke påvist noen signifikante samspilleffekter mellom rase og kraftfôrnivå på noen av opptaksparametrene.Som forventet produserte NRF kyrne mer mjølk og EKM enn STN kyrne, men innholdet av fett og protein i mjølka var høgest hos STN kyrne. Daglig produksjon av fett og protein var imidlertid høgest hos NRF kyrne enn STN kyrne pga høgere mjølkeproduksjon. Hverken... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Breeding and genetics; Feeding and growth. |
| Ano: 2009 |
URL: http://orgprints.org/16862/1/Thuen_etal_2009_NRF_og_STN_foropptak_og_produksjon_HFM2009.pdf |
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| Steinshamn, Håvard; Mydland, Liv Torunn; Volden, Harald; Thuen, Erling. |
| Three multiparous cannulated dairy cows were used to test the effect of including 0, 23 % and 46 % red clover (RC) on dry matter (DM) basis in timothy (T) silage on nitrogen (N) intake, utilization and excretion. The cows were offered a fixed ration; 13 kg silage and 7 kg concentrate DM. The N intake and urine N excretion increased with increasing silage clover proportion. Milk yield was higher in the clover containing silages than in the pure grass silage, probably due to higher organic matter digestibility in RC containing silages. The efficiency in converting feed N into milk N, however, was higher in cows fed the timothy silage than in cows offered grass/clover silages. The efficiency in microbial protein synthesis in the rumen and the proportion of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle. |
| Ano: 2006 |
URL: http://orgprints.org/9316/1/steinshamn_etal_grado_2006.pdf |
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| Steinshamn, Håvard; Luteberget, Ingvild Steinnes; Jensen, Søren K.; Thuen, Erling. |
| The objective was to compare the effects of supplementing lactating dairy cows with synthetic (All-rac), natural (RRR) α-tocopheryl acetate or seaweed with a control on the concentration of α-tocopherol in blood and milk. Twenty four dairy cows in mid lactation, fed an organic feed ration, were randomly allocated to the four treatments in a replicated Latin square design. Plasma and milk α-tocopherol concentrations were higher in RRR and All-rac than in the other treatments and higher in RRR than in All-rac. RRR-α-tocopherol was the predominant steroisomer (> 86%), in both plasma and milk, whereas the remaining part was largely made up by the three synthetic 2R isomers. In cows fed the control, seaweed and RRR, the proportion of RRR-α-tocopherol in... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Feeding and growth; Health and welfare. |
| Ano: 2012 |
URL: http://orgprints.org/21667/1/Steinshamn_et_al_2012_alpha-tocopherol_dairy_cows.pdf |
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| Kidane, Alemayehu; Nesheim, Ingvild Luteberget; Larsen, Hans Jørgen S.; Thuen, Erling; Jensen, Søren K.; Steinshamn, Håvard. |
| The objective of the current experiment was to compare the effects of supplementing mid-lactation dairy cows with all-rac-α-tocopheryl acetate (SyntvE), RRR-α-tocopheryl acetate (NatvE) or seaweed meal (Seaweed) in the presence of a Control group (no supplemental vitamin E or seaweed) on the concentration of α-tocopherol in plasma and milk, and antibody response following immunization. The hypothesis was that supplementation of dairy cows with vitamin E, regardless of its form, would increase plasma and milk α-tocopherol compared to the control diet and this incremental response would be bigger with NatvE than SyntvE. Furthermore, it was hypothesized that vitamin E, regardless of its form, will provide an improved adaptive immune response to... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle; Health and welfare. |
| Ano: 2015 |
URL: http://orgprints.org/29289/1/Kidane%20et%20al%202015%20Effects%20of%20supplementing%20mid-lact%20dairy%20cows%20vitamin%20E%20and%20seaweed.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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| Steinshamn, Håvard; Thuen, Erling; Brenøe, Ulrik Tutein. |
| The effect of clover species and level of concentrate supplementation on milk fatty acid (FA) composition has been studied. White (WC) and red clover (RC) grown in mixture with grasses were preserved in round bales and fed to autumn calving dairy cows during the first 10 weeks of lactation. Milk FA was higher in linolenic acid, vaccenic acid and rumenic acid for RC than for WC silage (0.90 vs. 0.79 %, 1.52 vs. 1.36 %, 0.90 vs. 0.75 % for these 3 FA, re-spectively), and RC silage gave a higher n-3/n-6 milk FA ratio than WC (0.98 vs. 0.72). Concentrate sup-plementation decreased the level of vaccenic acid (1.21 vs. 1.68 %), linolenic acid (0.63 vs. 1.05 %) and the n-3/n-6 ratio (0.55 vs. 1.16) as compared with no supplementation, and the effect of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health Animal husbandry. |
| Ano: 2006 |
URL: http://orgprints.org/7217/3/Steinshamn_paper_milk_quality_revised.doc |
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| Gustavsson, Anne-Maj; Purup, Stig; Krogh Jensen, Søren; Steinshamn, Håvard; Thuen, Erling; Nadeau, Elisabet; Kuusela, Eeva. |
| Programme for open seminar for the PhytoMilk project held at Studentersamfundet, UMB, Ås, Norway, 23 June 2011 |
| Tipo: Other |
Palavras-chave: Dairy cattle; Pasture and forage crops; Health and welfare. |
| Ano: 2011 |
URL: http://orgprints.org/19600/1/PhytoMilk_Seminarium.pdf |
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| Registros recuperados: 24 | |
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