Synchronization of Reproductive
Cycles
The success of assisted reproductive technologies
depends on synchronization of various events
in the normal female reproductive cycle.
In recent years, we have learned much about
the molecular, cellular, and endocrine mechanisms
that control ovarian follicular development,
ovulation, function of the corpus luteum,
and maintenance of pregnancy. A better understanding
of these processes leads to improved methods
for synchrony between ovulation and estrus
(heat), increased number and viability of
embryos, and reduced incidence of luteal
insufficiency.
Additionally, this work will help to optimize
management protocols and treatment regimens,
and encourage and facilitate more producers
to use assisted reproductive technologies
that will improve the health and genetics
of livestock animals. Specifically, better
treatment regimens are needed to induce estrous
cycles in anestrous (not cycling) beef cows,
synchronize the time of ovulation in lactating
dairy cows, and accurately time insemination
with ovulation when estrus is not detected
in animals.
CSREES supports basic
and applied research projects to provide
information regarding the physiological
events associated with ovulation and estrus,
as well as application of this information
to improve reproductive management practices.
Some awards are made on a competitive basis,
while other funding occurs on a formula
basis.
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