A series of eight trials was conducted to determine if supplementation
with arginine improved growth of young rats, Japanese quail
and swine fed low-lysine diets. In five rat trials, with a variety of
basal diets, no evidence of a "sparing effect" of arginine on the lysine
requirement was found. A...
The excitation and decay probabilities for resonance scattering
of radiation from an atom with two coupled excited states and one
ground state in an external static field are calculated as a function
of time and frequency. Various oscillatory behaviors are found in all
the probabilities. These oscillations depend on the...
A two-part study was conducted to investigate some of the nutritional
relationships between dietary tri-o-cresylphosphate (TOCP), a
toxic stress material, and dietary vitamin E and selenium. In part
one, growth rate of male weanling Long-Evans rats and day-old
Japanese quail (Coturnix coturnix japonica) was used to determine the
protective action...
In part one, levels of dehydrated alfalfa meal greater than 60% of the diet significantly (P < 0.01) reduced the growth of rats fed isocaloric diets. Purified cellulose fed to provide the same amount of acid detergent fiber as contributed by the alfalfa did not affect growth. Feed intake was...
A series of four trials was conducted to evaluate activated
sewage sludge (AcSS) as a protein source. In the first trial the protein
efficiency ratio (PER) of sun-dried and auto-claved, sun-dried
AcSS was measured with rats. Growth of AcSS-fed rats was extremely
poor as compared to those rats fed casein,...
The metabolism of pyrrolizidine alkaloids and other
drugs was studied with regard to nutritional status and
species differences. Pyrrolizidine alkaloids which are biotransformed
to severely toxic metabolites were isolated
from tansy ragwort (Senecio jacobaea). Semi-purified alkaloid
crystals containing five alkaloids (senecionine, seneciophylline,
jacobine, jacoline, and jacozine) were prepared
and found...
The objective of this research project was to evaluate the toxicity of
local pyrrolizidine alkaloid containing plants and to examine the influence
of dietary protein, with particular reference to the amino acid cysteine,
upon this toxicity.
Senecio vulgaris (common groundsel) was shown to be more toxic than
Senecio jacobaea (tansy...