vitro digestibility tended to be greater with ammoniation. In the second trial, very high levels of ammonia, urea or glucose were added. Levels of insoluble protein were much higher in this trial than the other. This reflects the high variability of corn silage. Recovery of nitrogen added as ammonia averaged 82 percent while all of the nitrogen added as urea was recovered. The amounts of insolu...

A finishing trial and a metabolism trial were conducted to evaluate sources of supplemental protein in dry-rolled corn (DRC) and dry-rolled grain sorghum (DRGS) diets fed to large-framed calves and to determine effects of grain and protein source on ruminal metabolism. In Exp. 1, 144 Charolais crossbred steer and heifer calves (BW = 269 +/- 3 kg) were used in a randomized complete block design ...

the aim of this study was to evaluate the effects of balancing low protein diets for methionine and lysine on performance of early lactation holstein cows under hot environmental temperature. twenty one multiparous holstein cows in early lactation were allocated to three experimental rations including, 1) high protein ration with 17.5% cp, 2) medium protein ration with 16% cp and 12 g/d rumen p...

The revolving algal biofilm (RAB) system is a wastewater treatment method that effective at removing nutrients from wastewater, and as result produces algae could be used sustainable fertilizer source. A two-year greenhouse study was conducted to investigate if algae-based fertilizers produced the RAB an turfgrass fertilizer. Fertilizer treatments included pure (PA), + cellulosic filler (Blende...

SCHMIDT-NIELSEN, BODIL, AND ROSCOE R. ROBINSON. Contribution of urea to urinary concentrating ability in the dog. Am. J. Physiol. 218(5): 1363-1369. 1970.-Dogs were maintained on balanced highand low-protein diets for 3 weeks prior to the experiments. Urea clearance, inulin clearance, and solute concentrations in the various zones of the kidney were determined. The glomerular filtration rates a...

In Indonesia, pigeon is one who is familiar with humans, beside can be consumed, usually maintained for hobby or pleasure. One of the parasitic worms that infect the pigeon’s kidneys was Paratanaisia bragai (P. bragai). That worm can cause pathological changes in the renal pigeons. Evaluation of renal function can be done through checking of serum creatinine and urea. This study was conducted t...

Giant Snowdrop (Galanthus elwesii Hook) is a species of snowdrop belonging to the Amaryllidaceae family. In this study, deformation rates bulbs was calculated as % (percent). For sterilization G. were sterilized at different concentrations (1, 3, 5, 7, 9, 11 and 13 %) sodium hypochlorite (NaOCl) for 10, 15, 20, 25 minutes. The rinsed with sterile distilled water 3 times 5 minutes then transferr...

Since the turn of the 21st century, gene knockout mice have been created for all major urea transporters that are expressed in the kidney: the collecting duct urea transporters UT-A1 and UT-A3, the descending thin limb isoform UT-A2, and the descending vasa recta isoform UT-B. This article discusses the new insights that the results from studies in these mice have produced in the understanding ...

Although many methods for the determination of urea nitrogen have been described, few have proved highly convenient for the accurate determination of small amounts of urea nitrogen without having to make use of special apparatus or techniques. Among the older methods, the Van Slyke gasometric method (1) is generally considered the most accurate, with an allowable error of 1 per cent. This metho...

UNLABELLED Urea and NaCl are elevated in the renal inner medulla. We now find that a high concentration of urea or NaCl increases reactive oxygen species (ROS) in mouse renal inner medullary (mIMCD3) cells in culture. Previously, high NaCl, but not high urea, was found to cause DNA double-strand breaks. We now tested whether high urea or NaCl causes oxidative damage to DNA or cellular proteins....