W. C. Weir
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View article: Modal Response of Polymers With SMA Ribbon Reinforcements
Modal Response of Polymers With SMA Ribbon Reinforcements Open
Shape Memory Alloy (SMA) based composites are unique because their static and dynamic characteristics can be controlled. Active modal modification and active strain energy tuning are two common techniques used to control the dynamics of SM…
View article: Control of potassium deficiency syndrome in cotton by soil solarization
Control of potassium deficiency syndrome in cotton by soil solarization Open
Potassium-deficiency symptoms in cotton are widespread in California and become most apparent in leaves during heavy demand by developing bolls. Potassium fertilizers may reduce the problem, but the main cause may be pathogenic organisms i…
View article: Concerns of Nutritional and Medical Experts About Fat and Cholesterol in the Diet
Concerns of Nutritional and Medical Experts About Fat and Cholesterol in the Diet Open
Scientific and medical communities agree on the need for variety in the diet and that dietary requirements change at various stages of the life cycle.The greatest area of controversy centers around issues of dietary cholesterol, total fat,…
View article: Sheep research stresses management, nutrition, and breeding
Sheep research stresses management, nutrition, and breeding Open
Goals of the Hopland Field Station's sheep research program have been to increase production by increasing the number of lambs born, improving lamb survival, increasing weaning weights, economically meeting the nutritional needs of sheep, …
View article: Flushing of Range Ewes by Supplementation, Drylot Feeding, or Grazing of Improved Pasture
Flushing of Range Ewes by Supplementation, Drylot Feeding, or Grazing of Improved Pasture Open
The lambing performance of range ewes was compared with that of similar ewes which were supplemented for 17 days prior to and the first 17 days of breeding (four years), were fed in drylot (four years), or grazed an improved pasture (two y…
View article: In Vitro 15Nitrogen-tracer Technique for Some Kinetic Measures of Ruminal Ammonia
In Vitro 15Nitrogen-tracer Technique for Some Kinetic Measures of Ruminal Ammonia Open
To quantitate the several nitrogen fluxes which participate in the synthesis of ruminal microbes, an in vitro technique utilizing 15N ammonia was developed.The technique involves incubation of 15NH4labelled rumen contents and analysis for …
View article: Microbial Growth Dependence on Ammonia Nitrogen in the Bovine Rumen: A Quantitative Study
Microbial Growth Dependence on Ammonia Nitrogen in the Bovine Rumen: A Quantitative Study Open
A. dry cow was fed rations of either alfalfa or alfalfa-barley pellets in two equal portions daily.Whole rumen digesta samples were withdrawn at intervals just before feeding and 2, 3, 4, 6, and 8 hours after feeding.In each of these sampl…
View article: Effects of time of shearing on wool and lamb production
Effects of time of shearing on wool and lamb production Open
Time of shearing does affect both wool and lamb production and also ewe mortality. Shearing during seasons of the year other than spring and summer can increase lamb production and also produce stronger wool fibers. Shelters and additional…
View article: Microdigestion of Grazed Annual Forage, Clipped Herbage, and Standard Samples by Cattle and Sheep
Microdigestion of Grazed Annual Forage, Clipped Herbage, and Standard Samples by Cattle and Sheep Open
Microdigestion estimates were correlated with macrodigestion estimates obtained by lignin ratio technique under grazing or total collection procedures under dry-lot feeding. Over all techniques the correlation was about 0.72. Forages graze…
View article: Effect of Vitamin D and of Shearing on Ewe Lambs
Effect of Vitamin D and of Shearing on Ewe Lambs Open
Weanling ewe lambs on range forage were supplemented with different rations from July 16 to December 2, 1957. Lambs were allotted within different ration groups so as to include three groups of lambs each representing a different shearing …
View article: Distribution of Intravenously Injected Radio-Active Phosphorus (P32) among Sheep Tissues
Distribution of Intravenously Injected Radio-Active Phosphorus (P32) among Sheep Tissues Open
THE use of artificially radioactive isotopes as tracers in mineral metabolism studies has been previously described in experiments with swine (Smith et al., 1951). This paper reports the utilization of plasma inorganic phosphorus (as trace…