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| Registros recuperados: 23 | |
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| Mogensen, L.; Kristensen, T.; Søegaard, K.; Jensen, S.K.. |
| The aim of the present paper is to present a prototype of a decision support model simulating the feed and vitamin supply during a year on a farm self-sufficient with feed. The model takes into account that the content of vitamin and minerals depends on choice of crops, conservation method, season, plant development at harvest, quality of the silage production, and duration of storage together with traditional optimizing of the feeding scheme. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle. |
| Ano: 2008 |
URL: http://orgprints.org/12233/1/Mogensen_12233_ed.doc |
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| Hansen, L.L.; Claudi-Magnussen, C.; Jensen, S.K.; Andersen, H.J.. |
| The present study was carried out to establish knowledge of consequence for setting up guidelines of importance for production of competitive organic pork of high quality. Performance and meat quality characteristics were compared between three organic pig production systems based on indoor housing with access to an outdoor area and a Danish conventional indoor system including 100% concentrate during the finishing feeding stage. The three organic systems used the following three feeding regimes: 100% organic concentrate according to Danish recommendations, 70% organic concentrate (restricted) plus ad libitum organic barley/pea silage and 70% organic concentrate (restricted) plus ad libitum organic clover grass silage, respectively. With exception of a... |
| Tipo: Journal paper |
Palavras-chave: Feeding and growth. |
| Ano: 2006 |
URL: http://orgprints.org/10016/1/10016.pdf |
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| Vestergaard, M.; Jensen, S.K.; Therkildsen, M.. |
| The organic rules require that bull calves are raised outdoor at least 6 months a year in Denmark and are fed at least 60% roughage of the total diet. These rules are a constraint for an organic production of beef based on the bull calves born in the organic dairy herds because of extra labor costs, expected lower growth rate, difficulties in raising bull calves outdoor, possibly lower meat quality and lack of sufficiently high organic premium payment for the carcass. Thus, the bull calves are sold for conventional fattening. The supply of organic beef from young cattle is concomitantly very limited. However, in order to obtain the necessary higher payment for beef from organic-raised young cattle, it is important that consumers like the beef from grass-... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farming Systems; Animal husbandry. |
| Ano: 2012 |
URL: http://orgprints.org/22054/3/22054.pdf |
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| Elgersma, A.; Søegaard, K.; Jensen, S.K.. |
| Fresh forages are an important natural source of vitamins and fatty acids in ruminant diets, and their concentrations in forage species are important for the quality of animal-derived foods such as dairy and meat products. The aims of this study were to obtain novel information on vitamins and fatty acids (FA) in a variety of forage legumes and non-legume forb species compared to a grass−clover mixture and to explore implications for animal-derived products. Seven dicotyledons [four forbs (salad burnet (Sanguisorba minor), caraway (Carum carvi), chicory (Cichorium intybus), and ribwort plantain (Plantago lanceolata)) and three legume species (yellow sweet clover (Melilotus officinalis), lucerne (Medicago sativa), and birdsfoot trefoil (Lotus... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops. |
| Ano: 2013 |
URL: http://orgprints.org/24764/7/24764.pdf |
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| Lindqvist, H.; Nadeau, E.; Jensen, S.K.. |
| Effects of wilting, ensiling and type of additive on atocopherol and b-carotene contents in legume–grass mixtures were examined. Swards of birdsfoot trefoil + timothy (Bft + Ti), red clover + timothy (Rc + Ti) and red clover + meadow fescue (Rc + Mf) were harvested as a first regrowth in August 2005. Forage was wilted to a dry-matter (DM) content of 273 g kg)1 and ensiled without additive or with an inoculant or acid. Wilting decreased a-tocopherol concentration by 30% in the Bft + Ti mixture (P = 0x015). Untreated Bft + Ti silage had higher a-tocopherol content than red clover silages (56x9 vs. 34x2 mg kg)1 DM; P = 0x015). The a-tocopherol concentration of Bft + Ti silages increased during ensiling from 41x1 mg kg)1 DM in wilted herbage to 56x9, 65x2 and... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops. |
| Ano: 2011 |
URL: http://orgprints.org/19452/1/gfs_8271.pdf |
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| Adler, Steffen A.; Dahl, A.V.; Jensen, S.K.; Thuen, E.; Gustavsson, A.-M.; Steinshamn, H.. |
| Previous research has shown that grazing pastures compared to feeding preserved forages has large impact on milk fatty acid (FA) composition, but differences between grazing red clover (Trifolium pratense L.) or white clover (Trifolium repens L.) are small, whereas the herbage proportions of dicotyledon botanical families is positively correlated with the milk-fat proportions of total polyunsaturated FA when grazing pastures in the Alps. The objective of the present study was to investigate the influence of botanically different pastures on bovine milk composition and milk susceptibility to oxidation. Two groups of 8 multiparous Norwegian Red dairy cows [mean (standard deviation); 599 (45.1) kg body weight, 73 (15.0) d in milk, 29.9 (2.90) kg milk/d at... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle Pasture and forage crops Food security; Food quality and human health. |
| Ano: 2013 |
URL: http://orgprints.org/23128/1/Adler%20et%20al%202013%20Fatty%20acid%20composition%20fat%20soluble%20vitamin%20concentration%20oxidative%20stability%20bovine%20milk%20pasture%20botanical%20composition.pdf |
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| Mogensen, L.; Kristensen, T.; Søegaard, K.; Jensen, S.K.. |
| Self-sufficiency of nutrients is a central element in the organic farming principles. In a project involving five private organic dairy farms, we aimed to achieve self-sufficiency in vitamins and minerals at farm level. All the herds are fed 100% organically grown feed, but so far supplements of minerals and vitamins based on inorganic and synthetic products are imported to all farms. The same level and type of supplement was used for the cows all year round, even though all cows were on grass for at least 150 days during the summer period. The average daily intake from the supplement for a lactating cow was 751 mg E vitamin, 111 mg Cu, and 558 mg Zn. The content of vitamin and minerals in the home-grown feeds was modelled taking into account the effect... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Feeding and growth. |
| Ano: 2009 |
URL: http://orgprints.org/16297/4/Mogensen_2009_vitamins.pdf |
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| Elgersma, A.; Søegaard, K.; Jensen, S.K.. |
| Agronomic data on most broad-leaved species of grasslands are scarce. The aim of this study was to obtain novel information on herbage DM yield and forage quality for several forb species, and on species differences and seasonal patterns across harvests and in successive years. Four non-leguminous forbs [salad burnet (Sanguisorba minor), caraway (Carum carvi), chicory (Cichorium intybus) and ribwort plantain (Plantago lanceolata)] and three leguminous forbs [yellow sweet clover (Melilotus officinalis), lucerne (Medicago sativa) and birdsfoot trefoil (Lotus corniculatus)] and a perennial ryegrass–white clover mixture were investigated in a small-plot cutting trial in Denmark during 2009 and 2010. Plots were harvested four times per year. On average, annual... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops. |
| Ano: 2014 |
URL: http://orgprints.org/24763/7/24763.pdf |
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| Søegaard, K.; Sehested, J.; Jensen, S.K.. |
| The aim was to examine if including a range of grassland species could help to balance the diet on organic dairy farms compared with traditional mixtures. Four different grass species and four legume species were grown and harvested in mixtures with one grass and one legume for two growing seasons. The species turned out to have very individual mineral, vitamin and fiber profiles and organic matter digestibility, not influenced by year. Among the legumes red clover (Trifolium pratense) and white clover (Trifolium repens) had the highest feeding value and red clover had further a high content of Co, Cu and Zn. Lucerne (Medicago sativa) had as red clover a high growth potential in mixture but had in general a low content of macro and micro minerals with... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops. |
| Ano: 2010 |
URL: http://orgprints.org/17832/4/17832.pdf |
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| Kongsted, A.G.; Nørgaard, J.V.; Jensen, S.K.; Lauridsen, C.; Juul-madsen, H.R.; Norup, L.R.; Engberg, R.G.; Horsted, K.; Hermansen, J.E.. |
| Among consumers in Europe and other parts of the world there is an increasing interest in high-value pork positioned with regard to animal welfare (Krystallis et al., 2012). Free-range pork production is considered more animal friendly because the system enables the animals to express their natural behaviour to a large degree. However, outdoor production of growing-finishing pigs on pastures as described by Halberg et al. (2010) has a major drawback in terms of high risk of nitrate leaching (Eriksen et al., 2006ab; Salomon et al., 2007). This is to a large extent related to high stocking densities combined with large input of nutrients from the supplementary feed (Eriksen et al., 2006ab). The use of supplementary feed is often higher in free-range compared... |
| Tipo: Journal paper |
Palavras-chave: Pigs. |
| Ano: 2014 |
URL: http://orgprints.org/27396/9/LIVSCI-D-14-1065.pdf |
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| Søegaard, K.; Sehested, J.; Jensen, S.K.. |
| The aim was to investigate the micro-mineral profile of herbage as affected by grassland species, cutting time and seasonality and in relation to dairy cow requirements. The different grassland species were grown and harvested in mixtures with one grass and one legume for two growing seasons. The species turned out to have very individual mineral profiles, not influenced by year. Among the legumes red clover (Trifolium pratense) had high concentrations of Co, Cu and Zn, white clover (Trifolium repens) of Mn and Fe, lucerne (Medicago sativa) of Se and lotus (Lotus corniculatus) of Co, Mn, Zn and Fe. Among the grasses perennial ryegrass (Lolium perenne) generally had the highest concentrations of all the micro-minerals. Hybrid ryegrass (Lolium hybridum) had... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops. |
| Ano: 2010 |
URL: http://orgprints.org/17831/4/17831.pdf |
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| Elgersma, A.; Søegaard, K.; Jensen, S.K.. |
| Grasslands provide an important part of the feed used by domestic and wild ruminants. Fresh forages are an important natural source of vitamins in ruminant diets. Most studies in forages have been carried out with perennial ryegrass and legume species such as white clover. As yield and quality data of broad-leaf grassland species are scarce, the aim of this study was to obtain novel information on vitamins in a number of herb species compared to a grass-clover mixture and to get insight into species differences and seasonal patterns across the various harvests and years. Seven herb species and a perennial ryegrass-white clover mixture were investigated in a cutting trial with four harvests (May–Oct) during 2009 and 2010. Vitamin concentrations were highest... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops. |
| Ano: 2012 |
URL: http://orgprints.org/24762/8/24762.pdf |
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| Elgersma, A.; Søegaard, K.; Jensen, S.K.. |
| Most studies in forages have been carried out with perennial ryegrass and legume species such as white clover. Recently, alfa-tocopherol and beta-carotene in a number of dicotyledonous forage species were compared to a grass-clover mixture. To develop management guidelines, insight into seasonal patterns across the various harvests and years is important. Therefore, four herb species, three legumes and a perennial ryegrass-white clover mixture were investigated in a cutting trial with four harvests (May-Oct) during 2009 and 2010. Concentrations of alfa-tocopherol and beta-carotene were highest in October and lowest in July. Biodiverse pastures could have added benefits in farming practice as various herbs outperformed the grass-clover mixture regarding... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops. |
| Ano: 2013 |
URL: http://orgprints.org/24710/6/24710.pdf |
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| Registros recuperados: 23 | |
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