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Regulation of early trophoblast differentiation and development
(University of Missouri--Columbia, 2010)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Placenta is a transient organ which functions in multiple ways to support the growth and survival of the developing fetus. Placenta plays a critical ...
Selection for placental efficiency in swine
(University of Missouri--Columbia, 2004)
). These traits were considered traits of the piglet and scored 1 for piglets alive at those time points or 0 if dead. Estimates of direct heritability were 0.16 and 0.18 and of maternal heritability were 0.14 and 0.10 for FS and WS, respectively. Logistic...
Studies of ruminant digestion, ecology, and evolution
(University of Missouri--Columbia, 2008)
This thesis examines ruminant digestion, ecology, and evolution, particularly where they can improve livestock production systems. We performed an experiment that estimated ruminal in situ degradation parameter values of ...
Biology of uterine glands : impact on reproductive function
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Pregnancy loss is the most common complication of human gestation, and roughly one-half of conceptions result in pregnancy loss, most frequently in the ...
Exploration of fecal microbial transfer and the competitive exclusion concept in broilers as a possible alternative to antibiotic growth promoters
(University of Missouri--Columbia, 2021)
.059) in percent livability from 0-42 d among control (84.5 percent) and the three graded levels of FMT treated birds (0.5, 0.25 and 0.2 cc) being 93.5 percent, 84 percent, and 93 percent respectively. The ratio of IL17 to IL10 RNA expression was significantly...
Uterine regulation of preimplantation embryo development in fertility-classified heifers
(University of Missouri--Columbia, 2018)
, serial embryo transfer (3-4 rounds) was used to classify heifers based on pregnancy success on day 28 as high fertile (HF; 100%), subfertile (SF; 25%), or infertile (IF; 0%). Next, a series of experiments were conducted using the fertility...
Tissue inhibitor of metalloproteinase-1 contributes to reduced fecundity in a rat model of endometriosis
(University of Missouri--Columbia, 2008)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Endometriosis affects millions of women worldwide; its symptoms are pain and reduced fecundity. An established rat model was used which endometriosis ...
Biology of uterine glands : impact on reproductive function
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Pregnancy loss is the most common complication of human gestation, and roughly one-half of conceptions result in pregnancy loss, most frequently in the ...
Transgenerational effects of in utero heat stress on reproduction in pigs
(University of Missouri--Columbia, 2017)
Seasonal infertility caused by high ambient temperatures and humidity during the summer months can have negative effects on the reproduction of female swine. These conditions may cause heat stress leading to large economic ...
Altered microrna expression profiles in bovine fetuses with an assisted reproduction-induced congenital overgrowth syndrome
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Assisted reproductive technologies (ART) refer to a series of fertility treatments used to conceive offspring. ART is used worldwide in humans for treatment of infertility...
Effects of reduced protein, amino acid supplemented diets on production and economic performance of commercial broilers fed from hatch to market age
(University of Missouri--Columbia, 2007)
Five studies were conducted to determine the effects of reduced crude protein (CP) of commercial boilers fed for further processing. In experiments(EXP) 1, 2, and 3, birds were fed diets with up to 1.5% reduction in CP. ...
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 ...
Characterization of apoptosis in the developing bovine fetal ovary: association with germ cell loss
(University of Missouri--Columbia, 2008)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] During early bovine fetal development a 170 fold increase in germ cells occurs from d 50 to 110 followed by a rapid decline of germ cells by d 170. To ...
Implications of ovarian and uterine maturity evaluated in replacement heifer candidates
(University of Missouri--Columbia, 2021)
to the start of breeding seasons from 2019-2021. Scores for ovarian (1 = no ovarian development, pea sized; 2 = very few follicles < 8 mm; 3 = several follicles 8-10 mm; 4 = large preovulatory follicle > 10 mm; 5 = corpus luteum present) and uterine (1...
Ablation of conceptus PTGS2 provides a new understanding of early pregnancy events in the pig
(University of Missouri--Columbia, 2019)
Pig conceptuses produce and secrete estrogens (E[2]), interleukin 1 beta 2 (IL1B2), and prostaglandins (PGs) during the period of rapid trophoblast elongation and establishment of pregnancy. Previous studies established ...
Effects of continous administration of low-dose of Escherichia coli lipopolysaccharide in chicks and poults fed non toxic doses of aflatoxin B1 and T-2 toxin
(University of Missouri--Columbia, 2005)
Six studies (three with broilers and three with turkeys) were conducted to determine if E. coli lipopolysaccharide (LPS) would enhance the effects of aflatoxin B1 (AFB1) and the T-2 toxin (T-2) in chicks and poults fed ...
Digestible lysine and threonine requirements of male turkeys and their effects on performance of male turkeys fed practical diets to market age
(University of Missouri--Columbia, 2008)
application of digestibility coefficients. The minimum requirements for dLys and dThr were then used to formulate low crude protein diets for male turkeys from 1 to 18 weeks of age, using safety factors of 0, 5 and 10% over the minimum amino acid requirements...
Characterization of progesterone receptor (PGR) mRNA and protein isoforms in the endometrium of cyclic and pregnant pigs
(University of Missouri--Columbia, 2010)
in endometrial tissue from cyclic (days 0, 5, 7.5, 10, 12, 13, 15, 17) and pregnant (days 10, 12, 13, 15, 17) pigs. Isoform PGR-B mRNA had a tendency to be greater on d 0 and d 5 and decreased on d 7.5 and d 15 (P < 0.10). Combined PGR-AB mRNA was constitutively...
Effects of heat stress and fescue toxicosis on the immune system and other physiological parameters
(University of Missouri--Columbia, 2010)
Tall fescue is widely used as pasture grass in the United States, and is the most important cool season grass for grazing animals. Certain fungi also grow on these grasses which produce toxins, resulting in reduced feed ...
Glutamine metabolism and interactions with mechanistic target of rapamycin complex 1 in porcine preimplantation embryos
(University of Missouri--Columbia, 2021)
The ability to culture embryos has created opportunities for animal agriculture, including the refined selection of superior genetics, and for the medical field, allowing couples experiencing infertility to have biological ...