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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Assessing the phosphorus and potassium balances in Oregon's dairies

Higgs, Kathryn N. 12 September 2003 (has links)
A field study was conducted to assess phosphorus (P) and potassium (K) concentrations of both lactating and dry cow diets on Oregon's dairies. Thirty-seven dairy farms, located in western Oregon, were grouped according to geographic region, valley (V) or coast (C), and herd size, small (S) or large (L). Farms were visited on three separate occasions. During each visit, lactating and dry cow diets were recorded and corresponding feed ingredients were collected and analyzed for P and K. For each diet recorded, fecal and urine samples were collected and analyzed for P and K. When available, milk production data was obtained. During the initial visit, a survey was issued to producers to assess P and K knowledge as well as gather herd data and management information. Survey responses received indicated that two-thirds of participants were knowledgeable about P and its affects within the environment. Knowledge of K appeared to be less than that of P. Average P concentration of the lactating cow diet was 0.40% (DM basis) and did not differ between region (P=0.12) or herd size (P=0.76). Fecal P excretion did not differ between region (P=0.08) or herd size (P=0.27), however, a trend for larger fecal excretion in V farms contributed to the lower calculated apparent P digestibility for V than C. Potassium in lactating cow diet was greater (P=0.01) for C than V, however, but no difference between herd size (P=0.10) was determined. Overfeeding of K also occurred in dry cow diet with no difference between region (P=0.40) and herd size (P=0.72). Combining the fecal and urinary fractions, an individual lactating cow consuming 0.40% P (89.8 g) and 1.71% K (384.3 g) per day will excrete 24.0 kg of manure P and 76.3 kg of manure K annually. The magnitude of plant available P and K produced; requires Oregon producers to acquire additional land, an additional two-tenths ha/cow, to be to apply P and K at agronomic rates. / Graduation date: 2004
2

Oregon licensed dietitians' perceived knowledge, attitudes, subjective norms, and intentions with respect to using diet as complementary medicine : a study in the Theory of Reasoned Action

Lee, Yi-Kyoung 16 October 1998 (has links)
Graduation date: 1999
3

A case study : nutrition quality of school lunches selected and consumed by third graders from food pyramid choices menus before and after a nutrition education intervention

Batdorf, Caryl L. 10 December 1998 (has links)
Graduation date: 1999
4

Acculturation and food : a study of Vietnamese women in Portland, Oregon

Sarasin, Heather M. 15 April 2004 (has links)
This study is intended to provide information about the situation of first-generation Vietnamese women to the IRCO Parent and Child Program Department in Portland, Oregon. Nutrition intervention and food assistance currently offered to Vietnamese women enrolled in this program is the focus of the study. The women interviewed characterize themselves and their eating patterns as Vietnamese, though many changes in practice and concept reflect those of American culture. The study reveals several categories of food acculturation that act both separately and influence the development of each other. These categories are diet, taste, solutions, and concepts. Recommendations are made according to the categories and process of acculturation demonstrated by the participating women and the effects of this process on the health of the women and their families. / Graduation date: 2004

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