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The information presented in this thesis was collected in 5
villages in the Xaythanee District and in the Faculty of
Agriculture, National University of Laos, Vientiane City, Lao PDR,
with financial support from the Swedish International Development
Agency/ Department for Research Cooperation with Developing
Countries (Sida/SAREC). I am gratefully acknowledging the support
from the farmers and all these institutions.
I would like to express my sincere gratitude to:
Prof. Dr. Inger Ledin, my main supervisor, for all your
irreplaceable help and inspiration and for your correcting,
commenting, advising and discussion throughout the
study.
Dr. Thomas Reg Preston, my associate supervisor, for your
valuable advice and discussion during the study and for all the
assistance.
Prof. Dr. Brian Ogle, International co-ordinator of the
"Vietnam-SAREC Sustainable Livestock Production Systems" project,
for valuable support and for reading and correcting the English in
my papers.
Prof. Dr. Luu Trong Hieu, former Co-ordinator, Dr. Ngo Van Man,
Co-ordinator of the SAREC-MEKARN project and the staff of
Sida-SAREC regional office in NLU, especially Mr. Nguyen Van Cong,
for advice, social activities and for their warm welcome and
providing suitable conditions for the study.
Dr. Bounthong Buahom, Director of National Agriculture and
Forestry Research Institution of Laos, Mr. Thongly Xayachack, Dean
and Mr. Fongsamouth Southammavong, Vice Dean of the Faculty of
Agriculture, National University of Laos, for their help,
facilitation and encouragement.
Professors, lecturers and assistant lecturers in courses, for
supplying useful knowledge.
All of my friends in the MSc course from the four countries:
Laos, Vietnam, Cambodia and Thailand, for sharing the culture,
friendship and creating a warm atmosphere throughout the time of
the course.
My parents, my brothers, my relatives and all my special friends
in Laos, for all of their support and inspiration during my study.
Many thanks for believing in me.