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- W2256785732 abstract "A PROCESS-BASED NUTRIENT MODEL FOR THE BEDDED MANURE PACK OF CONFINED BEEF SYSTEMS FEROUZ Y. AYADI 2015 Manure management is of growing concern for beef cattle producers and the general public. The overall objective of this research was to develop a process-based model that predicts concentration and gaseous emission from the bedded manure pack of a confined beef cattle system, with respect to different bedding material, manure storage time, and ambient temperature. The model incorporated the data collected in three experiments designed to understand transformations and processes occurring in the bedded pack. The first study evaluated the source of volatilized ammonia nitrogen from beef cattle manure. Isotope ratio mass spectrometry was used to determine the origin of aerial ammonia nitrogen losses (urine or fecal material) from the relative isotopic abundance of nitrogen in the N -labeled slurry mixture. On average 84% of total ammonia nitrogen losses originated from the urine portion and were highest during the first two to four days, when fresh material was added. The second and third experiments were conducted to determine differences in ammonia, carbon dioxide, nitrous oxide, and methane concentrations and moisture content, nutrient concentrations (ammonium nitrogen, total nitrogen, total phosphorus, total potassium), short-term nitrification activity potential, and denitrification enzyme" @default.
- W2256785732 created "2016-06-24" @default.
- W2256785732 creator A5045334936 @default.
- W2256785732 date "2015-01-01" @default.
- W2256785732 modified "2023-09-24" @default.
- W2256785732 title "A Process-Based Nutrient Model for the Bedded Manure Pack of Confined Beef Systems" @default.
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