Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2012
Authors
Sokratis Stergiadis Carlo Leifert Christopher John Seal Mick D Eyre Jacob H Nielsen Mette K Larsen Tina Slots Håvard Steinshamn Gillian ButlerAbstract
There is increasing concern that the intensification of dairy production reduces the concentrations of nutritionally desirable compounds in milk. In this study we therefore compared important quality parameters (protein and fatty acid profiles, α-tocopherol and carotenoid concentrations) in milk from four dairy systems with contrasting production intensities (in terms of feeding regimes and milking systems). The concentrations of several nutritionally desirable compounds (β-lactoglobulin, omega-3 fatty acids, omega-3/omega-6 ratio, conjugated linoleic acid c9t11 and/or carotenoids) decreased with increasing feeding intensity (organic outdoor ≥ conventional outdoor ≥ conventional indoors). Milking system intensification (use of robotic milking parlours) had a more limited effect on milk composition, but increased mastitis incidence. Multivariate analyses indicated that differences in milk quality were mainly linked to contrasting feeding regimes, and that milking system and breed choice also contributed to differences in milk composition between production systems.
Authors
Ragnhild Aabøe Inglingstad Binyam Sime Dagnachew Tove Gulbrandsen Devold Andrea Criscione Bernardo Valenti Siv Borghild Skeie Håvard Steinshamn Gerd Elisabeth VegarudAbstract
No abstract has been registered
Authors
Ragnhild Aabøe Inglingstad Binyam Sime Dagnachew Tove Gulbrandsen Devold Andrea Criscione Bernardo Valenti Siv Borghild Skeie Håvard Steinshamn Gerd Elisabeth VegarudAbstract
No abstract has been registered
Authors
Margarita Novoa-Garrido Lise Aanensen Hans Jørgen S. Larsen Søren Krogh Jensen Håvard SteinshamnAbstract
No abstract has been registered
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No abstract has been registered
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No abstract has been registered
Abstract
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 plasma and milk constituted more than 97% of the total α-tocopherol. The study demonstrated that dairy cows in mid and late lactation have preferential uptake of RRR-α-tocopherol compared to other stereoisomers.
Abstract
In Norway, most lambs are slaughtered at the end of the grazing season in September. An increased demand for fresh meat during the off-season may change this pattern. Castration of male lambs is not permitted, and off-season slaughtering may affect the acceptability of the meat. The objective of this study was to determine the effect of gender on meat quality from Norwegian White Sheep lambs slaughtered in September at the age of five months. Twenty-nine male lambs and 46 female lambs were included in the experiment. Loin samples of M. Longissimus dorsi were analysed for sensory profile. Meat from male lambs had higher scores for the less pleasant sensory attributes of cloying (P < 0.05) and rancid (P = 0.08) flavour, and lower scores for the more pleasant attributes of sour and sweet taste (P < 0.05 for both attributes) compared to meat from female lambs. The differences were more apparent between lambs grazing ryegrass than between lambs fed a concentrate and roughage diet. It is concluded that even at the normal slaughtering time in September, significant differences between genders may occur.
Abstract
No abstract has been registered
Authors
Laura Parducci Tina Jørgensen Mari Mette Tollefsrud Ellen Elverland Torbjørn Alm Sonia L. Fontana Keith D. Bennett James Haile Irina Matetovici Yoshihisa Suyama Mary E. Edwards Kenneth Andersen Morten Rasmussen Sanne Boessenkool Eric Coissac Christian Brochmann Pierre Taberlet Michael Houmark-Nielsen Nicolaj K. Larsen Ludovic Orlando M. Thomas P. Gilbert Kurt H. Kjær Inger Greve Alsos Eske WillerslevAbstract
No abstract has been registered