The objectives of this study were to evaluate the potential for using blood urea N concentration to predict urinary N excretion rate, and to develop a mathematical model to estimate important variables of N utilization for several different species of farm animals and for rats. Treatment means (n = 251) from 41 research publications were used to develop mathematical relationships. There was a s...

* haemoglobin 12 g/dl * haematocrit 38 * white blood cells 12 x 109/1 * neutrophils 880 * reticulocytes 500 * blood urea nitrogen 7.5 mmol/l * serum creatinine 160 imol/l * serum bilirubin 21 tLmol/I * urine: appearance: cloudy protein 1 + 15 white blood cells + four red blood cells/high power field * X-ray (chest, abdomen, right knee): normal * serum electrolytes, phosphorus, glucose, hepatic ...

Two experiments with a randomized complete block design were conducted to determine the effects of phase feeding of CP on performance, blood urea nitrogen (BUN), manure N:P ratio, and carcass characteristics of steers fed in a feedlot. In Exp. 1, 45 crossbred steers (initial BW = 423 +/- 3.3 kg) were individually fed a diet formulated to contain 13.0% CP (DM basis) for 62 d. On d 63, the dietar...

Since the ammonia undergoes a 3-electron change, 1 mole is equal to 3 equivalents of the generated titrant. Recently we (lescril)ed an improved cud-point (letection for this system and applied it to titration of as little as 1.4 g. ammonia (2). This method has been extended to titration of ammonia formed by the action of urease on urea in blood and urine. In urine samples, ammonia may be titrat...

Standardized rates of drug-attributed rises in blood urea nitrogen were 8.6%, 2.9%, and 9.3%, respectively, in patients receiving gentamicin alone, cephalothin alone, and both drugs together. These results provide evidence against a substantial synergism between the two drugs in the production of impaired renal function.

This study was conducted to investigate the effects of different levels of peptide supplementation on rumen fermentation pattern, digestibility and microbial protein synthesis. Three rumen-cannulated Holstein dairy cows were used in a 3 × 3 Latin square experiment within 21 days period. The ruminal infusion of sodium caseinate (CN) was 0 (control), 50 and 100 g/d. Dry matter intake, milk yield ...

A study was conducted to determine the variations in concentrations of blood glucose, total protein, cholesterol and blood urea nitrogen (BUN) in buffaloes (n=30) suffering from foreign body syndrome. These animals were subdivided into two groups showing traumatic reticuloperitonitis (TRP, n=20) and diaphragmatic hernia (DH, n=10). Six healthy female buffaloes of same age group were considered ...

NE X T to trimethylamine, ammonia is the most typical spoilage product in fish, molluscs and crustaceans. I t is generally determined together with other volatile nitrogen bases, as total volatile basic nitrogen (TVB). The objective quality determinations of cartilaginous fish such as dogfish and skate, however, raises special problems. These fish contain large quantities of urea (1.5 to 2 per ...

We developed a new technique that monitors metabolic competency in female heterozygotes for ornithine transcarbamylase deficiency (OTCD). The method uses mass spectrometry to measure conversion of (15)NH4Cl to [15N]urea and [5-(15)N]glutamine following an oral load of (15)NH4Cl. We found that heterozygotes converted significantly less NH3 nitrogen to urea, with this difference being particularl...

We studied the usefulness of preoperative resistance index to select patients who will benefit most from renal stenting. Sixty-two patients underwent renal stenting. All had chronic renal insufficiency with serum creatinine values ranging from 1.5 to 2.5 mg/dL and blood urea nitrogen between 80 and 107 mg/dL. All treated renal artery stenosis were >70%. Reduction in blood pressure in the early ...