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Article . 2021
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Þang sem fóðurbætir fyrir mjólkurkýr – aukin nyt og gæði?

Authors: Pétursdóttir, Ásta Heiðrún; Beaumal, Corentin; Ríkharðsson, Gunnar; Gunnlaugsdóttir, Helga;

Þang sem fóðurbætir fyrir mjólkurkýr – aukin nyt og gæði?

Abstract

Lagt var upp með að kanna hvort hægt væri að auka nyt mjólkurkúa með þanggjöf og kanna efnainnihald og gæði mjólkurinnar. Einnig hvort hægt væri að nýta þanggjöf sem steinefnagjafa, t.d. fyrir lífrænt fóður sem gæti leitt af sér nýja afurð á borð við joðríka mjólk og því hvatað nýsköpun í nautgriparækt. Niðurstöður leiddu í ljós að þanggjöf gæti haft jákvæð áhrif á mjólkurframleiðni þar sem hóparnir sem fengu þanggjöf sýndu lítilsháttar aukningu á mjólkurframleiðslu miðað við samanburðarhópinn, en breytingin var ekki marktæk. Niðurstöður á safnsýnum sýndu að snefilefnasamsetning breyttist. Fóðurbæting með þangi gæti t.d. verið áhugaverður kostur fyrir bændur sem hafa hug á eða stunda nú þegar lífræna framleiðslu en áhugi á lífrænni ræktun er að aukast hjá nautgriparæktendum. ____ The project’s main aim is examining whether it would be possible to increase milk production of dairy cows by using seaweed as a feed ingredient and to examine the chemical content and quality of the milk. Also whether seaweed could be used as a mineral source, e.g. for organic feed that could lead to new products such milk high in iodine. The results showed that seaweed feeding may have a positive effect on milk production, as the groups that received seaweed feeding showed a slight increase in milk production compared to the control group, but the change was not significant. The results of pooled samples showed that the trace elemental composition changed. Seaweed feed supplementation could e.g. be an interesting option for farmers who are interested in or already engaged in organic production.

Funding: Framleiðnisjóður landbúnaðarins, Nýsköpunarsjóður námsmanna

Keywords

kýr, þang, þari, þungmálmar, joð, arsen, heilnæmi, þörungar, mjólk

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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