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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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| 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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| Mogensen, L.; Vestergaard, J.S.; Frette, X.; Lund, P.; Weisbjerg, M.R.; Kristensen, T.. |
| The effect of toasting field beans and of grass-clover: maize silage ratio on milk production, milk composition and sensory quality of the milk was investigated in a 2*2 factorial experiment. Toasting of field beans resulted in lower contents in milk of both fat (44.2 versus 46.1 g/kg, P = 0.02) and protein (33.5 versus 34.2 g/kg, P = 0.008), whereas milk production and urea and somatic cell contents were unaffected compared with untreated field beans. Increasing the proportion of maize silage (from 2 to 5 kg DM/cow/day) in the ration decreased the content of urea in milk (P=0.002), whereas milk production and fat and protein contents were unaffected. Milk from cows fed the high proportion of maize silage had a lower (P=0.04) content of the long chain... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle; Feeding and growth. |
| Ano: 2009 |
URL: http://orgprints.org/16340/1/16340.pdf |
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