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The effects of aging and fsh on the epigenome of the mouse oocyte
(University of Missouri--Columbia, 2015)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] With aging, females experience a natural decline in their reproductive success, partly due to a decline in the quality of the oocyte (ovum/egg). In ...
Analysis of transcript abundance of uterine genes after application of bovine pregnancy associated glycoproteins to endometrial explants
(University of Missouri--Columbia, 2015)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Pregnancy-associated glycoproteins (PAGs) belong to the aspartic protease family and are expressed exclusively by trophoblasts of even-toed ungulates. ...
Development of a novel immunoassay for simultaneous quantification of endocrine parameters
(University of Missouri--Columbia, 2015)
Since the advent of the radioimmunoassay in the 1950s, numerous immunologically-based methods have evolved for sample analysis. Although each immunological method possesses unique assets and liabilities, all share limited ...
Development of a pregnancy associated glycoprotein assay to detect late embryonic mortality in cattle
(University of Missouri--Columbia, 2015)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Embryonic mortality (EM) decreases profitability of a beef or dairy operation because of the impact that it is has on delaying the time of conception ...
Evaluation of long-term CIDR-based estrus synchronization protocols in primiparous two-year-old beef cows
(University of Missouri--Columbia, 2015)
Reproductive management of two-year-old beef cows presents a unique challenge in managing a beef herd, since this age group of females typically experiences the highest incidence of reproductive failure. Strategic management ...
Mu-synthesis controller design for temperature control of a solar steam gasifier with uncertainty modeling and robust analysis
(University of Missouri--Columbia, 2015)
Gasifiers operate by inputting a carbon rich material, water, and heat into a reactor core to cause a chemical reaction to produce a desired chemical composition output. For this work, a unique hybrid allothermal/autothermal ...
Selection for parasite resistance in Kiko x Boer goats
(University of Missouri--Columbia, 2015)
In the United States, goat production has increased over the last three decades because of their economic value as efficient converters of low-quality forages in quality meat, milk, and hides for specialty markets. However, ...
Timing of ovulation in gilts treated with different regiments of OvuGel(R) and Matrix(R)
(University of Missouri--Columbia, 2015)
Previous research has shown that 85% of gilts treated with Matrix(R) will show heat (estrus) 4-9 d after last Matrix(R) feeding. Synchronization of estrus is important in knowing when to inseminate (breed). This window of ...
Factors affecting growth of the conceptus in lactating dairy cows and non-lactating dairy heifers
(University of Missouri--Columbia, 2015)
Embryonic loss in dairy cows continues during the fifth and sixth weeks of pregnancy in lactating dairy cows. There is an association between smaller embryos and pregnancy loss during this period. The objective was to ...
Strategies to improve stored forage use efficiency
(University of Missouri--Columbia, 2015)
Two experiments evaluated collection frequency impacts on forage waste estimates and bale diam., stocking rate, and feeder design influences on waste level. In Exp. 1, waste collection daily (DLY) reduced (P < 0.05) estimates ...
Impacts of late gestational tall fescue forage systems on preweaning calves
(University of Missouri--Columbia, 2015)
A 2 year experiment was conducted researching the impact of common lower Midwestern beef cattle winter forage systems on late gestation, spring-calving beef cows and their subsequent calves. We hypothesized that cows grazing ...
Determining best predictors of animal performance in feedlot steers
(University of Missouri--Columbia, 2015)
Two studies were performed in a feedlot environment to determine the long-term effects of heat events on animal performance and well-being. Experiments in this thesis were designed to pinpoint ambient variables that most ...
Timing GnRH administration with split-time artificial insemination following administration of CIDRbased protocols to synchronize estrus and ovulation in beef heifers and cows
(University of Missouri--Columbia, 2015)
Split-time artificial insemination (STAI) was developed as a novel breeding strategy that delays insemination by 20 to 24 h for cows and heifers that fail to express estrus prior to a predetermined fixed time. Split-time ...
Strategies to improve corn residue utilization
(University of Missouri--Columbia, 2015)
Two experiments investigated methods to increase corn residue utilization by forage processing, water and supplement addition, and harvest method. In the first experiment, feeding high-moisture, lower fiber corn stover ...
Strategic progesterone testing as a method to predict conception and manage reproduction in dairy cows
(University of Missouri--Columbia, 2015)
Timed AI (TAI) programs have increased reproductive efficiency in dairy herds, but conception rates to TAI remain below 50% for most herds. The low TAI pregnancies per AI (P/AI) is partially explained by cows that do not ...
Comparison of rumen microbe taxa among wild and domestic ruminants
(University of Missouri--Columbia, 2015)
Microbes that inhabit the rumen provide a diverse set of enzymes that degrade ingested plant material. Without microbes, ruminants could not survive. Our research has focused on identifying microbial taxa associated with ...
Efficacy of adsorbents and antioxidants in reducing the effects of mycotoxins in broilers and pigs
(University of Missouri--Columbia, 2015)
Feed is the most expensive aspect of livestock production, accounting for around 69% of total cost (Donohue and Cunningham, 2009). This high cost drives the incentive to offer a properly balanced diet, which supplies the ...
Modulation of inflammatory responses by Sutherlandia frutescens
(University of Missouri--Columbia, 2015)
Sutherlandia frutescens (L.) R. Br (Lessertia frutescens) is a medicinal plant traditionally used in southern Africa. It has been used for patients suffering from numerous types of cancer, infectious diseases, and various ...
Understudied chromosomes : an analysis of the canine mitochondrial genome and bovine Y chromosome
(University of Missouri--Columbia, 2015)
Certain regions of the genome are more difficult to study than others due to intrinsic characteristics of the region. The mitochondrial genome is small with high copy number and therefore easy to sequence. The challenge ...
Genetic linkage of multiple modifications in the pig
(University of Missouri--Columbia, 2015)
Genetic engineering facilitates heritable modification of target genomes. Modifications can be site-specific or random. Though inefficient, homologous recombination allows for precise genome modification. Random integration ...