Typescript, etc. / Digitized by Kansas State University Libraries

Digitized by Kansas State University Libraries

Typescript, etc. / Digitized by Kansas State University Libraries

Call number: LD2668 .T4 1945 A3 / Master of Science

LD2668 .T4 1966 A232 / Master of Science

Over the past decade, feeder cattle backgrounders in the Pacific Northwest have been subject to sharp price fluctuations for their output. The result has been variable profits and losses. This situation creates a need for management and marketing techniques which can provide Pacific Northwest cattle ranchers with protection against price risks while enhancing the profitability of their operations. Recent economic literature has shown hedging with futures contracts to be an effective tool for mitigating risk and/or increasing the net revenues of cattle producers in a number of regions of the United States. The objective of this research was to determine whether hedging with futures contracts could have increased the profitability of Pacific Northwest feeder cattle production while decreasing the effects of price volatiliy. To realize this objective, the economic performance of alternative hedging strategies were evaluated for several methods of feeder cattle backgrounding indigenous to the Pacific Northwest region. Four hedging strategies -- routine, moving average, profit objective, and triangular probability distribution — were evaluated for hedging the output of four simulated production systems. The mean and standard deviation of annual net returns were computed for each hedging strategy to serve as measures of profitability and risk, respectively. The results of not hedging were also obtained to provide a basis for comparing alternative hedging programs. Sample t and F tests were conducted to determine whether there were statistically significant differences between the means and standard deviations of the unhedged and hedged positions. Dominant hedging strategies were then identified for each production system. Based on the results of the mean-variance analysis, it appears that the use of selective futures market hedging strategies would have provided greater and more stable levels of profit compared to the net incomes obtained without hedging. Sample t and F tests, using 80 and 90 percent levels of significance respectively, showed that hedging could have significantly decreased the variability of the producer's flow of income without significantly changing the operation's average profitability. Moving average, profit objective, and triangular probability distribution strategies were dominant, increased average profitability, and significantly lowered risk for at least one production system each. Overall, moving average strategies generated the highest mean profits with the greatest risk. Profit objective strategies generally resulted in lower mean profit than moving average strategies but with less risk. The risks and returns from hedging with triangular probability distribution strategies were usually between the moving average and profit objective procedures. Strategies which performed well in this study should also perform well in the future if conditions in the feeder cattle markets do not vary substantially from those of the previous decade. Thus, hedging with futures market contracts may provide the Pacific Northwest feeder cattle producers with protection against price risk and enhanced profitability. / Graduation date: 1985

Prerigor pressurization of bovine semimembranosus muscle at 103.5 MNm⁻² (15,000 psi) for two min at 35°C significantly decreased (P<0.01) muscle pH, and significantly (P<0.01) increased the rate of glycogen degradation during the first 4 hr postmortem. Glycogen levels of pressurized muscle were significantly (P<0.01) lower than those of the control at 1, 2 and 4 hr postmortem. Glucose concentrations were significantly (P<0.01) higher in the treated muscle than in the control at all sampling periods. Until 4 hr postmortem the level of glucose-6-phosphosphate was higher in pressure-treated muscle than in the control. Lactate content increased rapidly after pressurization (1 hr postmortem), resulting in an immediate drop in pH; however, there was no significant difference between control and treated muscles at 24 hr. Pressurized muscle showed a significant (P<0.01) increase in lactate dehydrogenase activity over that of the control muscle at 1 hr but not at 24 hr. Pressurization accelerated catabolism of both creatine phosphate and adenosine triphosphate which resulted in a higher ATP turnover value than that of the control. R-values (a measure of metabolic rate) were significantly correlated (r=-0.95) with degradation of ATP. CPK activity was significantly higher (P<0.01) in pressurized muscle than in the control at 1 hr postmortem but not at 24 hr. Concentrations of ATP, adenosine diphosphate (ADP), adenosine monophosphate (AMP), inosine monophosphate (IMP), bases and nucleosides (adenosine, adenine, inosine, hypoxanthine) and nicotinamide adenine dinucleotide (NAD) were determined by high pressure liquid chromatography. Pressurization completely depleted the ATP supply and increased the IMP concentration at 1, 4 and 24 hr postmortem. At 24 hr postmortem, control samples had more ADP whereas the AMP concentration was higher in the pressurized samples at 1 hr postmortem but not at 24 hr. Concentrations of bases and nucleoside metabolites and NAD did not differ between treatments. / Graduation date: 1984

Three (intact) Angus males and three females which were half-sibs and born within 21 days of each other were selected for this study. Each animal was bled and biopsied periodically from suckling calves to mature slaughter weights, to determine the qualitative composition of lipoproteins and to differentiate the lactate lipogenic activity of subcutaneous tissue during growth and development. At slaughtered, a sample of intramuscular adipose tissue was taken to determine the lactate lipogenic activity at this location. Two days later, one side of each carcass was separated into wholesale cuts. Each wholesale cut was dissected into separable bone and soft tissue and sampled for protein, lipid and moisture determinations. The elution profiles of lipoproteins were similar for all animals. Major peaks observed were (1) very low density (VLDL), (2) low density (LDL) and (3) high density lipoproteins (HDL). Triglycerides, cholesterol and protein were not significant (P < .05) between males and females for the VLDL. At one year of age, females had large (P < .05) amounts of protein for the HDL. In both groups of cattle, largest (P > .05) amounts of protein were greater in the HDL at 9 months of age. Profiles of HDL apoproteins at all ages showed that in both groups of cattle, a distinct band with a weight of about 28,000 was present representing apo-AI. Apo-protein components of pooled LDL fractions showed a protein which was unable to enter the acrylamide gel (7.5 – 20%) used. The component may represent apo-B with a molecular weight of about 250,000. The lactate lipogenic activity of subcutaneous adipose tissue was larger in the males and only significant (P < .05) at 9 months of age. The lipogenic activity was higher (P > .05) in the subcutaneous tissue when compared to the intramuscular tissue at slaughter. In both cases, males showed to use more (P > .05) lactate for fatty acid synthesis in intramuscular and subcutaneous tissue than the females. Magnitude of quality and yield for carcass traits were better for the males than females. Bone, meat and lean weights were significantly (P < .05) greater for the males, however, on a percentage basis per side weight, differences were eliminated. In addition, no significant (P > .05) effect was present between male and female wholesale and side carcass composition.

No description available.

Call number: LD2668 .T4 1952 F3 / Master of Science