Results 21 to 30 of about 253,562 (308)

The Alkali-Tolerant Bacterium of Bacillus thuringiensis EM-A1 Can Effectively Perform Heterotrophic Nitrification and Aerobic Denitrification

open access: yesFrontiers in Environmental Science, 2022
Removal of nitrogen from hydroxylamine could effectively improve the wastewater treatment efficiency. In this work, Bacillus thuringiensis EM-A1 was obtained from a biogas digester with hydroxylamine as the only nitrogen source.
Tingjiang Wang   +5 more
doaj   +1 more source

Effects of phytase on growth and slaughter performance, digestibility and nitrogen and mineral balance in heavy pigs

open access: yesItalian Journal of Animal Science, 2012
The study aimed at evaluating the effects of phytase (Ronozyme® NP) to the diet of fattening pigs. In comparison with a control diet (C) which included 0.5% calcium salt (CaHPO4), two diets without CaHPO4 were tested: 150Phy and 300Phy, which contained ...
Gianluca Galassi   +5 more
doaj   +1 more source

Determination of nitrogen balance in agroecosystems

open access: yesMethodsX, 2017
Nitrogen balance in agroecosystems provides a quantitative framework of N inputs and outputs and retention in the soil that examines the sustainability of agricultural productivity and soil and environmental quality.
Upendra M. Sainju
doaj   +1 more source

Nitrogen Efficiency in Agriculture in Europe and India

open access: yesThe Scientific World Journal, 2001
Nitrogen balance sheets are useful tools for studying the quantitative aspects of nutrients. Nitrogen balance sheets have been prepared for the animal production system, crop production system, and for the agricultural sector as a whole for all 15 member
Klaas W. Van der Hoek
doaj   +1 more source

Challenges and opportunities for improving nitrogen utilization efficiency for more sustainable pork production

open access: yesFrontiers in Animal Science, 2023
Pork is one of the most consumed animal-derived protein sources around the world, but less than 45% of dietary nitrogen (N) is converted into edible lean meat.
Gerald C. Shurson, Brian J. Kerr
doaj   +1 more source

Nitrogen balance and ruminal assessment in male and female sheeps fed rations containing castor cake under different treatments

open access: yesSemina: Ciências Agrárias, 2014
Was evaluated the influence of alternative methods of detoxification of castor cake on nitrogen balance and ruminal evaluation in sheep fed isocaloric and isonitrogenous experimental diets.
Rafael Nogueira Furtado   +5 more
doaj   +1 more source

Fertigation of Maize with Digestate Using Drip Irrigation and Pivot Systems

open access: yesAgronomy, 2020
Digestate is a nutrient-rich fertilizer and appropriate techniques are required for its application during the maize season to reduce losses and increase the nitrogen use efficiency (NUE).
Viviana Guido   +6 more
doaj   +1 more source

Spineless Cactus plus Urea and Tifton-85 Hay: Maximizing the Digestible Organic Matter Intake, Ruminal Fermentation and Nitrogen Utilization of Wethers in Semi-Arid Regions

open access: yesAnimals, 2022
The aim of this study was to evaluate the effect of replacing Tifton-85 hay (Cynodon spp. cv. Tifton 85) with 0, 150, 300, 450 and 600 g/kg dry matter (DM) of spineless cactus (SC, Nopalea cochenilifera Salm-Dyck) plus urea and ammonium sulfate (UAS; 9:1)
Robert E. Mora-Luna   +8 more
doaj   +1 more source

Nitrogen and phosphorus budgets in Poland as a tool for sustainable nutrients management

open access: yesActa Agriculturae Slovenica, 2006
In the paper the nitrogen and phosphorus balances calculated according to OECD methodology are presented on regional and country levels. For the whole Poland the balance of nitrogen shows surplus of about 45 kg N*ha-1 a-1 with high variability among the ...
Jerzy KOPIŃSKI   +2 more
doaj   +1 more source

Nitrogen Balance in Radiation Chimeras.

open access: yesExperimental Biology and Medicine, 1964
SummaryPositive nitrogen balance was observed in mice given 900 r total-body X-irradiation and then treated by injection of living bone marrow cells. The average level was about twice that of normal controls for 90 days after irradiation and bone marrow treatment. Mice given isologous cells showed a normal rate of gain in body weight.
Mc arthur, W H   +2 more
openaire   +2 more sources

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