The Use of Serum Urea Nitrogen Concentrations for the Determination of Lysine Requirements of Gilts1,21Approved for publication by the director of the Louisiana Agric. Exp. Sta. as manuscript no. 96-11-0389.2We would like to thank Nutri-Quest Inc., Chesterfield, MO, for providing the crystalline amino acids used in these experiments.

1997 ◽  
Vol 13 (2) ◽  
pp. 65-69 ◽  
Author(s):  
T.A. Knowles ◽  
L.L. Southern ◽  
K.R. Robbins ◽  
R. Buresh ◽  
A. Brundage
Keyword(s):  
Amino Acids ◽  
Serum Urea ◽  
Urea Nitrogen ◽  
Serum Urea Nitrogen ◽  
Nitrogen Concentrations ◽  
Crystalline Amino Acids

Use of the Berthelot Reaction in the Automated Analysis of Serum Urea Nitrogen

1966 ◽  
Vol 12 (3) ◽  
pp. 151-157 ◽  
Author(s):  
Alan A Wilcox ◽  
Wallace E Carroll ◽  
Rex E Sterling ◽  
H A Davis ◽  
Arnold G Ware
Keyword(s):  
Automated Analysis ◽  
Serum Urea ◽  
Urea Nitrogen ◽  
Serum Urea Nitrogen ◽  
Enzymatic Action ◽  
Diacetyl Monoxime ◽  
Automated Determination

Abstract A method is presented for the automated determination of urea nitrogen using the Berthelot reaction for measuring the ammonia released by the enzymatic action of urease. The method compares favorably with the automated diacetyl monoxime method and employs less dangerous and less expensive reagents.

Significance of low serum urea nitrogen concentrations.

1989 ◽  
Vol 35 (4) ◽  
pp. 639-640 ◽  
Author(s):  
G Lum ◽  
S Leal-Khouri
Keyword(s):  
Alcohol Abuse ◽  
Patient Population ◽  
Hepatobiliary Disease ◽  
Endocrine Disorders ◽  
Serum Urea ◽  
Urea Nitrogen ◽  
Serum Urea Nitrogen ◽  
Nitrogen Concentrations ◽  
Clinical Conditions ◽  
Low Serum

Abstract The prevalence of low serum urea nitrogen concentrations (less than 50 mg/L) in our patient population was 1.2% (151 per 12,380 determinations), representing 95 individual cases. Of these, 81 of the patients' charts were located, reviewed, and classified into two groups, those with and those without hepatobiliary disease. Hepatobiliary disease was found in 36% of the 81 patients; 90% of these showed evidence of alcohol abuse, as did 19% of those without hepatobiliary disease. The remaining patients without hepatobiliary disease had various clinical conditions: psychiatric disorders (14.8%), overhydration (12.3%), endocrine disorders (7.4%), cardiovascular diseases (4.9%), prednisone administration (3.7%), and special diets (2.5%). Thus, in our patient population the most frequent cause of low serum urea nitrogen concentrations was alcohol abuse, found in about half of the cases.

scholarly journals Significance of Low Serum Urea Nitrogen Concentrations

1990 ◽  
Vol 7 (2) ◽  
pp. 159
Author(s):  
Chung Sook Kim ◽  
Kyung Dong Kim ◽  
Dae Chul Kim
Keyword(s):  
Serum Urea ◽  
Urea Nitrogen ◽  
Serum Urea Nitrogen ◽  
Nitrogen Concentrations ◽  
Low Serum

Combination of Chlorogenic Acid and Bamboo Charcoal Particles Improve Husbandry Performance and Environment

2011 ◽  
Vol 356-360 ◽  
pp. 142-145
Author(s):  
Jian Hui Wang ◽  
Dong Min Liu ◽  
Yong Le Liu ◽  
Chi Lin Li ◽  
Fa Xiang Wang ◽  
...  
Keyword(s):  
Growth Performance ◽  
Chlorogenic Acid ◽  
Ammonia Concentration ◽  
Bamboo Charcoal ◽  
Serum Urea ◽  
Growth Promoters ◽  
Urea Nitrogen ◽  
Serum Urea Nitrogen ◽  
Antibiotic Growth Promoters ◽  
Ad Libitum

The objective of this study was to determine the effects of chlorogenic acid (CA) and bamboo charcoal particles activated by microwave (BCP) on performance, serum urea nitrogen and husbandry environment of broilers. The diets were devoid of antibiotic growth promoters (AGP). Two hundred and forty Avian broilers were allocated to a 2 × 2 factorial experiment involving two levels of CA (0 or 1000 mg CA/kg feed), and two levels of BCP supplementation (0 or 100 mg/kg feed). The diets and water were offered ad libitum. The growth performance and serum urea nitrogen was significantly increased when CA supplemented (P<0.05), while BCP significantly affects the ammonia concentration of the husbandry environment (P<0.05). These results indicate that CA and BCP combination can effectively improve the performance and husbandry environment.

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