1. Four pregnant sows were used to study lysine requirements by means of the interpretation of values for plasma amino acid and blood urea. Diets containing graded levels of dietary lysine were fed at the rate of 1.82 kg/d. 2. Plasma lysine remained at a low level up to 6.4 g dietary lysine/kg (dry matter basis) and then increased sharply with further increases in lysine intake. 3. Blood urea l...

Many tests have been done to evaluate renal function in the toxemias of pregnancy and investigators (1, 2, 3, 4, 5) are agreed that the most accurate is the blood urea clearance. Addis (6, 7) has studied the urinary sediment in both normal and nephritic patients and is able by this means to classify the nephritides more accurately. These two tests are the most sensitive and accurate of anyused ...

Blood and ruminal samples were analyzed from gestating cows fed apple pomace or corn silage plus isonitrogenous and isocaloric quantities of cottonseed meal or nonprotein nitrogen containing supplements in four trials. Data were also obtained from steers fed similar diets during a metabolism trial. The supplementary sources of nitrogen supplied 50 to 70% of the total nitrogen in the diet. Feedi...

OBJECTIVES This study was conducted to quantitatively evaluate the recovery effects of methanolic fraction Angel's wings on gentamicin (GM)-induced nephrotoxicity. MATERIAL AND METHODS Renal injury was achieved by injecting 100 mg/kg, intraperitoneally of GM in normal saline. Extract were administrated intraperitoneally at doses 200 and 400 mg/kg. Blood samples were examined for serum creatin...

Nitrogen is available in many forms. The most abundant of these, N2 gas, cannot be used by plants or animals and must be converted by Cyanobacteria or bacteria before plants can use it. Animals can only obtain it by eating other organisms that have already placed the N into amino acids. Other forms of N that plants can absorb include ammonium (NH4), nitrite (NO2), nitrate (NO3 ), and organic fo...

Svensgaard (1) using the micro urea method of Rehberg (2) compared the urea concentrations in blood from the arm vein with that of cutaneous blood from the lobe of the ear. In 29 of 32 analyses of the blood of normal fasting subjects she found the urea of the capillary blood higher thamn that of the venous blood. The average difference was 10 per cent of the venous urea content, but individual ...