Chemical composition and in vitro digestibility of wholecrop maize fertilized with synthetic fertilizer or digestate and harvested at two maturity stages in Boreal growing conditions

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Seleiman , M F , Selim , S , Jaakkola , S & Makela , P S A 2017 , ' Chemical composition and in vitro digestibility of wholecrop maize fertilized with synthetic fertilizer or digestate and harvested at two maturity stages in Boreal growing conditions ' , Agricultural and Food Science , vol. 26 , no. 1 , pp. 47-55 . https://doi.org/10.23986/afsci.60068

Title: Chemical composition and in vitro digestibility of wholecrop maize fertilized with synthetic fertilizer or digestate and harvested at two maturity stages in Boreal growing conditions
Author: Seleiman, Mahmoud F.; Selim, Shaimaa; Jaakkola, Seija; Makela, Pirjo S. A.
Contributor: University of Helsinki, Department of Agricultural Sciences
University of Helsinki, Department of Agricultural Sciences
University of Helsinki, Department of Agricultural Sciences
University of Helsinki, Department of Agricultural Sciences
Date: 2017
Language: eng
Number of pages: 9
Belongs to series: Agricultural and Food Science
ISSN: 1459-6067
URI: http://hdl.handle.net/10138/182809
Abstract: Maize cultivation for silage could be a sustainable option in Boreal conditions, especially when combined with nutrient recycling. Effects of digestate (sludge from biogas of domestic origin) application in comparison with synthetic fertilizer and two maturity stages on chemical composition and in vitro digestibility of whole-crop maize were investigated. Starch, neutral detergent fiber, water soluble carbohydrate (WSC) and digestible organic matter (DOM) contents of maize did not differ in response to the two fertilizer treatments. However, starch, DOM and metabolizable energy of maize increased, while ash, crude protein and WSC contents decreased with increasing maize maturity. Heavy metals in maize fertilized with digestate remained low. The results indicate that whole-crop maize fertilized with digestate and harvested at 150 days after sowing is a promising feed and has good nutritive value, even in Boreal conditions.
Subject: 412 Animal science, dairy science
digestate
heavy metals
in vitro digestibility
nutritive value
Zea mays L
LACTATING DAIRY-COWS
MILK-PRODUCTION
NUTRITIVE-VALUE
CORN-SILAGE
CROP MAIZE
MICROBIOLOGICAL PROPERTIES
ENSILAGE CHARACTERISTICS
STOVER COMPONENTS
AEROBIC STABILITY
NITROGEN
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