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Full-Text Articles in Animal Sciences
“Development Of Genetic And Genomic Predictors Of Fertility In Argentinean Holstein Cattle.”, Fernando Alfonso Di Croce
“Development Of Genetic And Genomic Predictors Of Fertility In Argentinean Holstein Cattle.”, Fernando Alfonso Di Croce
Doctoral Dissertations
The overall aim of the studies described herein was to evaluate genetic variation in cattle fertility traits for development of genetic and genomic predictors in breeding strategies. Results from these experiments suggest that improvements in fertility through genetic selection are a possible approach to increase reproductive efficiency. Experiment 1 evaluated the development of genetic parameters associated with multiple ovulation and embryo transfer schemes in an attempt to assist producers in identifying animals with greater genetic merit for these protocols. This study confirmed that genetic selection of donors or sires appears to be a potential approach to improve efficiency of MOET …
Reconstructing Species Responses To Past Climatic Changes Using Niche Modeling And Genetic Data, Tereza Jezkova
Reconstructing Species Responses To Past Climatic Changes Using Niche Modeling And Genetic Data, Tereza Jezkova
UNLV Theses, Dissertations, Professional Papers, and Capstones
Glacial – interglacial cycles have a pronounced impact on species distributions and genetic structure. Many species shift their distributions to lower latitudes and altitudes during the colder glacial periods and expand northwards and up the elevation during warmer interglacial periods. Some species however are capable of adapting to changing environment which allows them to persist in place despite climatic changes. I explored how climatic changes after the last glacial maximum (LGM) effected two species inhabiting the deserts of western North America: one mammal (Chisel-toothed Kangaroo Rat, Dipodomys microps) and one reptile (Desert Horned Lizard, Phrynosoma platyrhinos). I used …
Transferencia Del Embrión A Diferentes Días De La Ovulación De La Receptora Y Su Impacto Sobre La Fertilidad En Protocolos De Transferencia De Embriones En Equinos, Diego Alejandro Quevedo Criollo
Transferencia Del Embrión A Diferentes Días De La Ovulación De La Receptora Y Su Impacto Sobre La Fertilidad En Protocolos De Transferencia De Embriones En Equinos, Diego Alejandro Quevedo Criollo
Zootecnia
Con esta investigación, se identificó el día más propicio para realizar la transferencia de embrión (T.E) de la yegua donante a la yegua receptora con el fin de incrementar el porcentaje de gestaciones obtenidas. Esta investigación se llevó a cabo en tres diferentes criaderos ubicados en la sabana de Bogotá: Potrillos (Cogua), La Ceiba (Facatativa) y Tikal (Tenjo); se compararon los porcentajes de gestaciones obtenidas, se realizó una proyección de crías al año y la relación costo / beneficio entre los diferentes días de transferencia de embriones. Para esto se trabajo con 20 yeguas donantes y 53 yeguas receptoras. Los …
The Differential Roles Of D-Pax2 Variants In Regulating Drosophila Eye And Bristle Development, Colin J. O’Shea
The Differential Roles Of D-Pax2 Variants In Regulating Drosophila Eye And Bristle Development, Colin J. O’Shea
Honors Theses
The ability to appropriately interact with the environment is crucial to an organism’s survival. The establishment of functional sensory systems, such as the bristles and eyes in Drosophila, is a critical event during the development of the organism. The transcription factor D Pax2 is involved in the differentiation of the shaft and glial cells in the developing bristle (Kavaler et al., Dev, 126:2261-2272, 1999) and of the cone and primary pigment cells in the developing eye (Fu and Noll, Genes Dev, 11:389-405, 1997). How D-Pax2 contributes to distinct differentiative pathways in different cell types is not known. Recent work by …