Index Catalog // ScholarsArchive@OSU

Evaluation of tree forage as a nontraditional feedstuff for small livestock

Creator:: Ayers, Anne Christine
Abstract:: Five experiments were conducted to evaluate tree forage as a feedstuff for small livestock, using the foliage of black locust (Robinia pseudoacacia) and hybrid poplar (Populus spp.). In the first trial, rabbits were fed diets containing 40% alfalfa (control), and 10%, 20% and 40% poplar leaves (PL) from untrimmed or...
Resource Type:: Masters Thesis
Full Text:: raise rabbits and fix things I'd never fixed before at the rabbitry; and Drs. Phil Whanger and Warren

Perinatal mortality and preweaning growth of progeny of ewe lambs

Creator:: Gendron, Eric
Abstract:: Half Polypay ewe lambs were bred to Suffolk, North Country Cheviot and Hampshire rams to lamb at about one year of age. Type of birth-rearing significantly affected mortality by 70 days of age and all weights of lambs from birth to weaning. The mortality rate at 70 days of age...
Resource Type:: Masters Thesis
Full Text:: , whose encour- agement and friendship are most appreciated. Dr. William Hohenboken, Dr. Warren Kronstad

A study of morphological variation within Pseudoroegneria spicata (Pursh) A. Löve (Poaceae: Triticeae)

Creator:: Carlson, Jack R.
Abstract:: Chromosome counts were determined for 152 accessions of Pseudoroegneria spicata (Pursh) A. Löve and, combined with existing count data, used to plot the distribution of diploid and tetraploid populations. Morphological variation of 55 characters was examined in five groups totaling 205 operational taxonomic units (OTU's), using cluster, principal factor, and...
Resource Type:: Masters Thesis

Effects of sampling design, estimators, and variability on groundfish management in Oregon

Creator:: Crone, Paul R. Jr
Abstract:: Sampling error associated with estimates of species composition and age composition of commercial groundfish landings in Oregon from 1989 to 1991 is documented to evaluate the impact of variable landing data on fisheries management and monitoring programs. The statistical reliability and bias associated with two multistage sampling designs are investigated...
Resource Type:: Dissertation
Full Text:: groundfish management in Oregon AN ABSTRACT OF THE THESIS OF Paul R. Crone Jr. for the degree of Doctor of

Geographic variation in central Oregon ponderosa pine (Pinus ponderosa Laws.) : seed germination; seed, wing, and cone morphology; seed color

Creator:: Weber, John C., 1948-
Abstract:: Geographic variation was investigated among 225 locations from five geographically disjunct regions in central Oregon. Characters included: germination speed and uniformity in two test environments differing in stratification period and incubation temperature; weight, three dimensions and three 'angles' of seeds; weight and three dimensions of wings; cone length and scale...
Resource Type:: Dissertation
Full Text:: - David Birkes, Warren Kronstad, Charles Miller and David Perry - for their constructive comments and

Cephalosporium stripe of wheat : seedling-based resistance screening and pathogenic variability

Creator:: Cowger, Christina
Abstract:: Cephalosporium stripe of wheat (Triticum aestivum), caused by the soilborne fungus Cephalosporium gramineum, results in significant yield reductions in dryland winter wheat crops of the U.S. Pacific Northwest. The development of resistant cultivars offers the best hope for disease control. Breeding for resistance is hampered by the long trial times...
Resource Type:: Masters Thesis
Full Text:: signature below authorizes release of my thesis to any reader upon request. Christina Cowger, Auth r

Secretion of luteinizing hormone in response to exogenous melatonin in postpartum beef cows and ovariectomized beef heifers

Creator:: Sucheta, Susan Leers
Resource Type:: Dissertation
Full Text:: and preparation of this dissertation. I also express thanks to my graduate committee: Dr. Warren

Effect of seed protein content on plant growth of barley and wheat

Creator:: Lopez, Arturo
Abstract:: The purpose of this study was to evaluate the effect of seed protein content on plant growth of barley (Hordeum vulgare L. ) and wheat (Triticum aestivum L. ). The effects of nitrogen application on chemical and morphological characteristics of the seed were also studied. Seeds of 'Casbon' winter barley...
Resource Type:: Masters Thesis
Full Text:: . Dr. Richard Converse for his critical review of the thesis. Dr. Te May Ching, Dr. Warren Kronstad

Hormonal stimulation of breeding activity in different genetic groups of ewe lambs

Creator:: West, Dennis Errol, 1942-
Abstract:: An investigation of the effects of exogenous gonadotropic treatments on fertility of various genetic groups of ewe lambs were run over a six-year period. Since hormonal treatments varied and the experimental animals were different from one breeding season to the next, each year comprised a separate study. Hormone treatment included...
Resource Type:: Dissertation
Full Text:: of the graduate committee, Dr. Frederick Hisaw, Dr. Warren Kronstad, and Dr. Howard Hillemann for

Effect of wheat cultivar mixtures on populations of Puccinia striiformis races

Creator:: DiLeone, Julie A.
Abstract:: This study quantified the frequency of simple versus complex races of Puccinia striiformis Westend. in mixtures of wheat cultivars possessing different race-specific resistance genes. A simple race of a pathogen can infect only one component, and a complex race of the pathogen can infect two or more components of an...
Resource Type:: Masters Thesis
Full Text:: thank my committee members, Drs. Ken Johnson, Warren Kronstad, and Norman Anderson for helping me to

ScholarsArchive@OSU

Evaluation of tree forage as a nontraditional feedstuff for small livestock

Perinatal mortality and preweaning growth of progeny of ewe lambs

A study of morphological variation within Pseudoroegneria spicata (Pursh) A. Löve (Poaceae: Triticeae)

Effects of sampling design, estimators, and variability on groundfish management in Oregon

Geographic variation in central Oregon ponderosa pine (Pinus ponderosa Laws.) : seed germination; seed, wing, and cone morphology; seed color

Cephalosporium stripe of wheat : seedling-based resistance screening and pathogenic variability

Secretion of luteinizing hormone in response to exogenous melatonin in postpartum beef cows and ovariectomized beef heifers

Effect of seed protein content on plant growth of barley and wheat

Hormonal stimulation of breeding activity in different genetic groups of ewe lambs

Effect of wheat cultivar mixtures on populations of Puccinia striiformis races

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