Results 11 to 20 of about 1,355,564 (244)

The effect of milk urea nitrogen on milk composition in holstein dairy cows [PDF]

open access: yesEurasian Journal of Veterinary Sciences
Aim: The objective of this study was to evaluate the effects of milk urea nitrogen on milk composition. Materials and Methods: According to their milk urea nitrogen (1.
Tugay Ayaşan   +2 more
doaj   +2 more sources

Hydrogen from urea: a novel energy source [PDF]

open access: yes, 2011
This research presents a viability assessment of using urea as an energy vector. Urea is attractive in comparison to the chemicals previously considered for supplying hydrogen since it is non-toxic, non-flammable and stable at room temperature and ...
Rollinson, Andrew Neil
core   +6 more sources

Milk Nitrogenous Components as Measured by Near Infrared Spectroscopy-study on the repeatability for Predicting Different Population Samples [PDF]

open access: yes, 1999
The study on the use of near infrared reflectance spectroscopy (NIRS) analysis for measuring milk nitrogenous components (crude protein, true protein, casein and milk urea nitrogen (MUN)) was carried out using one hundred seventy milk samples collected ...
Agung PURNOMOADI   +17 more
core   +2 more sources

Associations of Lameness with Indicators of Nitrogen Metabolism and Excretion in Dairy Cows

open access: yesAgriculture, 2022
The aim of the study was to investigate the impact of lameness on nitrogen (N) metabolism and excretion. Two treatment groups of 20 multiparous Holstein–Friesian dairy cows were included in study; the control group consisted of cows with locomotion score
Daniel-Catalin Necula   +4 more
doaj   +1 more source

Nitrogen metabolism and milk production in dairy cows fed semi-restricted amounts of ryegrass-legume silage with birdsfoot trefoil (Lotus corniculatus L.) or white clover (Trifolium repens L.) [PDF]

open access: yes, 2012
In change-over trials, mid-lactation dairy cows were fed concentrate-supplemented, isonitrogenous and isofibrous perennial ryegrasslegume silage diets that satisfied energy requirements but were suboptimal with respect to metabolizable protein supply ...
Nilsdotter-Linde, Nilla   +8 more
core   +1 more source

Evaluation of Nutrition According to Milk Metabolites and Components in Seasonal Dependence in Dairy Cows

open access: yesFolia Veterinaria, 2023
The objective of this study was to evaluate the nutrition according to the milk metabolites and components during the seasonal dependence of the dairy cows. In the summer time, it was confirmed that significantly lower content of milk protein and fat (P <
Lacková Petra Timkovičová   +3 more
doaj   +1 more source

Role of ureolytic activity in Bacillus cereus nitrogen metabolism and acid survival [PDF]

open access: yes, 2008
The presence and activities of urease genes were investigated in 49 clinical, food, and environmental Bacillus cereus isolates. Ten strains were shown to have urease genes, with eight of these strains showing growth on urea as the sole nitrogen source ...
Abee, T., Mols, J.M.
core   +1 more source

Urea Finishing Process: Prilling versus Granulation [PDF]

open access: yes, 2014
Solid urea is the largest nitrogen fertilizer product which is produced in two forms of granules and prills. Although the chemical properties of both prills and granules remain similar, their different physical and mechanical properties are ...
Naderi, Sina   +13 more
core   +1 more source

Evaluation of Urine Nitrogen Excretion as the Measure of the Environmental Load and the Efficiency of Nitrogen Utilization

open access: yesFolia Veterinaria, 2022
The aim of this study was to evaluate the relationship between nutrition, the concentration of milk urea nitrogen (MUN) and the urinary nitrogen excretion in farm conditions and to use the MUN concentration as a tool to control protein nutrition and ...
Maskaľová I.   +2 more
doaj   +1 more source

Enhanced Productivity of a Lutein-Enriched Novel Acidophile Microalga Grown on Urea [PDF]

open access: yes, 2010
Coccomyxa acidophila is an extremophile eukaryotic microalga isolated from the Tinto River mining area in Huelva, Spain. Coccomyxa acidophila accumulates relevant amounts of b-carotene and lutein, well-known carotenoids with many biotechnological ...
Vilchez, C.   +13 more
core   +1 more source

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