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Vattenflöden i djurstallar
RISE Research Institutes of Sweden, Bioeconomy and Health, Agriculture and Food.ORCID iD: 0000-0001-9240-865x
RISE Research Institutes of Sweden, Bioeconomy and Health, Agriculture and Food.
RISE Research Institutes of Sweden, Bioeconomy and Health, Agriculture and Food.
2021 (Swedish)Report (Other academic)
Abstract [en]

Manure quality and quantity have been shown to change a lot through dilution from identified and diffuse water sources. Knowledge of the dry matter contents (DM) of the manure is needed for effective use of the manure as fertilizer and to avoid too high doses causing losses of nutrients to the surrounding water bodies. Based on this, water flow measurements were carried out at the five Swedish pilot farms. All water ending up in the manure storage was included. The measurement took note of drinking (indoor and outdoor), milk room (dishing etc), washing (stable, milk room, field equipment), feeding, staff areas and total consumption. The results were used for discussion on improving the handling of water in VERA, the Swedish calculation tool for manure quantity and quality on farms. The water amount from the different water categories differed between the animal categories, where dairy cows used in total 30-35 m3 per animal and year and the fatteners and sows around 8-10 m3 per animal and year. Out of the total water to the dairy cows, around 75-80% of the water was drinking water and the rest other technological water (e.g. cleaning of milk room, milking pit and dishes). For pigs the ratio was higher for drinking water, 95-almost 100 %. Here the largest amount of water was from wet foddering making up 80 % of the drinking water. Water through water cups per dairy cow amounted to around 25 m3 per year depending on if drinking water on pasture was included or not. This gives a daily consumption of 65-75 litres per animal and day which is a bit low compared to the literature. A concluding remark is that neither technical water (except for washing water at dairy farms) nor a variability in precipitation did have any major effect on the DM contents in slurry ex-storage. Instead, the water supply from faeces and urine was what determined the DM content. Additional water flow measurements on farms would provide data that should be used for generating improved default values for the calculation tools.

Place, publisher, year, edition, pages
2021. , p. 30
Series
RISE Rapport ; 2021:21
Keywords [sv]
vattenförbrukning i djurstallar, ts-halt i gödsel, flödesmätningar, stallgödsel
National Category
Animal and Dairy Science
Identifiers
URN: urn:nbn:se:ri:diva-56966ISBN: 978-91-89385-05-4 (electronic)OAI: oai:DiVA.org:ri-56966DiVA, id: diva2:1612925
Available from: 2021-11-19 Created: 2021-11-19 Last updated: 2023-06-08Bibliographically approved

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Myrbeck, Åsa

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