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Factors affecting neonatal beef calf metabolism and vigor
(University of Missouri--Columbia, 2021)
weight and faster time to stand than spring-born calves. Spring-born calves had greater circulating 0 h glucose, 0 and 6 h NEFA, and 0, 6, 12, and 48 h triglycerides. Fall-born calves had greater sodium and magnesium during the first 48 h postnatal...
Estimates of correlation between estrus behavior and estradiol concentrations during estrus
(University of Missouri--Columbia, 2020)
Estrus traits have economic value in dairy production systems and can potentially be incorporated into genomic selection. Three studies were performed to further understand selection responses. Study one and two explored ...
Protein source selection in nursery pigs during choice-feeding
(University of Missouri--Columbia, 2020)
The animal processing industry is continually growing to meet the demands of a growing human population. It is estimated that with the increasing human populations, the demand for animal proteins will be increasing more ...
Uterine regulation of preimplantation embryo development in fertility-classified heifers
(University of Missouri--Columbia, 2018)
Infertility and subfertility represent pervasive problems in domestic animals and humans, and embryonic mortality is a major factor influencing reproductive efficiency. In cattle, the majority of embryonic loss occurs ...
Investigation of methods and factors influencing mouse oocyte quality, in vitro fertilization and embryo development
(University of Missouri--Columbia, 2018)
Mice are one of the most commonly used rodent species as a model for biomedical research to better understand molecular, genetic, and cellular causes of human disease and disorders. The production of good quality oocytes ...
Extracellular vesicles, lipids, and lipoproteins in early pregnant sheep
(University of Missouri--Columbia, 2021)
In sheep, pregnancy establishment encompasses conceptus elongation, implantation, and placentation. These events are regulated by factors present within the uterine luminal fluid (ULF) from the endometrial epithelium and ...
Evaluation of the 7 and 7 synch protocol for control of the estrous cycle among beef cows prior to fixed-time artificial insemination with sex-sorted or conventional semen
(University of Missouri--Columbia, 2021)
(CIDR; 1.38 g progesterone) on Day 0, gonadotropin-releasing hormone (GnRH; 100 [mu]g gonadorelin) on Day 7, and PG coincident with CIDR removal on Day 14. Estrus detection aids (EstrotectTM) were applied to all cows on Day 14, and activation status...
Altering the timing of fixed-time artificial insemination and the interval from progestin withdrawal to prostaglandin F2a administration in estrus synchronization protocols for beef heifers
(University of Missouri--Columbia, 2022)
(CIDR; 1.38 g progesterone) on Day -33 and removal on Day -19, and administration of prostaglandin F2a (PG; 500 [mu]g cloprostenol sodium) on Day -3. Within location, heifers were blocked based on reproductive tract score and body weight and were...