Oats (Avena sativa L.) are a versatile crop with diverse genetic resources. A study of population structure in a collection of oat genotypes relatively unaffected by recent breeding activity identified an under-utilized area of genetic diversity which could be a source of novel alleles for agronomic traits and disease resistance. Association mapping in the collection generates the first molecular evidence for genetic architecture of traits including awn frequency and hull color. The history of oats in western Washington reveals an evolution away from regional self-sufficiency and towards greater integration with national and global markets. Recently, growth of interest in and demand for local and regional agriculture are fostering a more purposeful approach to regionality, and will be integral to reinvented roles for oats in western Washington. One opportunity for oats is the milling (food) oat market. To address a lack of regionally specific information on production practices and variety choice, two years of oat variety tests were carried out on organic and conventional farms in four counties. Estimated revenues based on agronomic and grain quality data suggest that milling oats are economically competitive with other small grain options. Hulless oats could be an alternative to corn and wheat for organic poultry producers seeking locally grown feeds. Three varieties of locally grown hulless oats were supplemented for corn and wheat in a feeding trial of Hy-Line Brown laying hens. The oats had no negative effects on hen health and productivity, and were economically competitive with commercially sourced organic corn and wheat. Oat variety showed no influence on feed value. Eggs from the feeding trial were used in a consumer evaluation. While there was evidence that feeding hulless oats changed the sensory properties of eggs by reducing yolk proportion, effect sizes were small. Overall, results support existing evidence that hulless oats can be fed to poultry at a moderate proportion of the diet with no negative effect on consumer acceptability of eggs. These projects rebuild a regional knowledge base for the adaptation and utilization of oats, which offer promising opportunities to diversify rotations and strengthen local food systems in western Washington.
|Advisor:||Murphy, Kevin M.|
|Commitee:||Garland-Campbell, Kimberly A., Hermes, James C., Sanguinet, Karen A.|
|School:||Washington State University|
|School Location:||United States -- Washington|
|Source:||DAI-B 78/12(E), Dissertation Abstracts International|
|Subjects:||Genetics, Agriculture, Plant sciences|
|Keywords:||Genome-wide association study, Oats, Plant breeding, Poultry feed, Regional agriculture, Regional food systems|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be