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Now showing items 81-100 of 251
The developmental liver transcriptome of Rattus norvegicus
(University of Missouri--Columbia, 2012)
Our research is involved in the transcriptional dynamics of perinatal liver development. The transcription factors and their downstream effects have been well studied in regards to early liver development, yet perinatal ...
Effect of ovulatory follicle size on steroidogenic capacity, molecular markers of oocyte competence and bovine pregnancy associated with glycoproteins in beef cows
(University of Missouri--Columbia, 2011)
Artificial insemination (AI) and estrus synchronization (ES) are effective tools for the genetic advancement of cattle. Gonadotropin-releasing hormone (GnRH) is used at the beginning of ES protocols to induce ovulation and ...
Phenotypic and genetic effects of disposition on beef tenderness and quality attributes
(University of Missouri--Columbia, 2011)
Cattle temperament (exit velocity; EV) and steak tenderness (Warner-Bratzler shear force) have been shown to be associated in Bos indicus cattle (Behrends et al., 2009). Both traits potentially provide opportunities for ...
Effects of dietary melamine and cyanuric acid in young Pekin ducks and weanling pigs
(University of Missouri--Columbia, 2012)
In 2007, melamine (MEL) and cyanuric acid (CYA) were added to feed ingredients in an attempt to artificially increase their crude protein and thus their momentary value. However, once ingested MEL and CYA can form insoluble ...
Function and gene expression of circulating neutrophils in dairy cows : impact of micronutrient supplementation
(University of Missouri--Columbia, 2012)
Three experiments were conducted to investigate the mechanisms of neutrophil dysfunction during the periparturient period and test potential nutritional strategies to prevent the immune-alteration typical of this time. The ...
The importance of the supplementation of zinc in nursey pig diets
(University of Missouri--Columbia, 2006)
Two 28-d experiments were conducted to investigate the effect of feeding pharmacological concentrations of Zn, from organic and inorganic sources, on growth performance and intestinal microbial population in nursery pigs. ...
Increasing land and forage utilization by Missouri cow/calf operations using silvopasture practices
(University of Missouri--Columbia, 2006)
Although rotational grazing has improved pasture management significantly in recent years, the need continues to exist for beef producers to increase land utilization and maintain a high level of forage production during ...
The effects of supplemental anionic salts & yeast culture on the production of dairy cattle during the periparturient period
(University of Missouri--Columbia, 2006)
The objective of this thesis was to determine nutritional strategies with the strategic use of feed additives during the periparturient period to reduce the negative energy balance as the dairy cow transitions from late ...
Evaluation of the efficacy of high levels of microbial phytase in broilers
(University of Missouri--Columbia, 2006)
Three experiments were conducted to evaluate the efficacy of high levels of microbial phytase in broiler diets. In experiment one (EXP 1), phytase was included in the diets at 0, 250, 500, 10,000, and 20,000 PU/kg diet. ...
Quantitative trait loci mapping and candidate gene analysis for growth and carcass traits on two bovine chromosomes
(University of Missouri--Columbia, 2006)
The first objective of this study was to identify genomic regions on BTA4 and BTA14 which harbor QTL affecting weight and carcass traits in a commercial Angus population. The mapping population consisted of 1,510 purebred ...
Morphologic and histologic comparisons between in vivo and nuclear transfer derived porcine embryos
(University of Missouri--Columbia, 2006)
Nuclear transfer (NT) is an inefficient but invaluable tool. This study examines abnormalities associated with NT porcine embryos at days 10, 12, and 14. Methods: 4 experimental groups were examined: non-pregnant, in vivo ...
Effects of aflatoxin B₁ (AFB₁) on hepatic gene expression in pigs and turkeys
(University of Missouri--Columbia, 2013)
The objective of the present study was to evaluate the efficacy of curcumin (CMN), an antioxidant supplied by turmeric (Curcuma longa) powder to ameliorate the adverse effects of aflatoxin B1 (AFB1) on performance of pigs ...
Determination of allelic expression of H19 in pre- and peri-implantation mouse embryos
(University of Missouri--Columbia, 2013)
H19 is a maternally-expressed imprinted non-coding RNA with tumor suppressor activity. H19 is located in an imprinted cluster which contains the paternally-expressed fetal growth factor Igf2. Monoallelic expression of H19 ...
Improvement in stored forage utilization during feeding
(University of Missouri--Columbia, 2013)
Three experiments investigated methods to reduce forage waste during stored forage feeding using large round bale feeders (LRBF). In the first experiment, cone and sheeted LRBF reduced (P < 0.05) fescue hay waste 54 and ...
Biological characteristics of Katahdin sheep selected for footrot resistance
(University of Missouri--Columbia, 2014)
The objectives of this study were to select sheep divergent for a footrot resistant genotype by screening with the DQA2 gene marker and to investigate the host resistant immune response, neutrophil phagocytic efficiency, ...
The effects of leptin on placental development and function, and offspring behavior in mice
(University of Missouri--Columbia, 2014)
The nutritional and energy status of individuals is communicated throughout the body by means of leptin. This hormone also plays a role in implantation and placental development and function, as well as programming behavior ...
Abundance of TRIM28, SETDB1, and TP53 mRNA is dynamically regulated during porcine early embryogenesis and is abnormal in preimplantation embryos produced by in vitro fertilization in comparison to in vivo derived and nuclear transfer derived embryos
(University of Missouri--Columbia, 2013)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] In vitro embryo production is important for research in animal reproduction, embryo transfer, transgenics, and cloning. However, in vitro-derived embryos ...
Analysis of Gbx genes during neural development
(University of Missouri--Columbia, 2013)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The understanding of how transcription factors regulate neural patterning in the anterior hindbrain, and how the assembly of specific neuronal circuits ...
Effect of commercial feed additives on production variables and metabolic markers of the periparturient dairy cow
(University of Missouri--Columbia, 2013)
Three experiments were conducted to investigate the effects of commercially available feed additives on production variables and metabolic markers when supplemented during the periparturient period. The hypothesis was that ...
The inhibition of cysteine peptidases improves in vitro maturation of porcine cumulus-oocyte-complexes
(University of Missouri--Columbia, 2013)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The cell permeable cysteine peptidase inhibitor, E-64, has shown utility as a potent and irreversible inhibitor for many cysteine proteases. Consequently, ...