Bioresource ScienceThe research and educational focus of this laboratory is on genetic breeding. By leveraging cutting-edge genomics method-ologies, this laboratory searches for and identifies livestock genes useful for breed improvement. This laboratory also con-ducts genetic research on the origin and evolution of domesti-cated animals.Identification of responsible gene for selective breeding in beef cattleGenetic analysis to elucidate population structure and migration routes of livestockAnimal Breeding and GeneticsImmunofluorescence staining of bovine sperm acrosomal proteinsImmunofluorescence staining image of pig oocyte spindleThe research and educational interests of this laboratory are focused on the improvement of reproductive techniques for livestock (e.g., cattle and pigs) to achieve higher efficiency. For this purpose, this laboratory conducts basic research on the growth, maturation, and fertilization of female gametes (oocytes) and seeks to discover biomolecules involved in the formation, maturation, fertilization, and freezability of male gam-etes (sperm). These biomolecules are used to develop novel molecular profiling protocols for gamete classification.Reproductive BiologyMicromanipulation of a porcine oocyteImmunofluorescence image of murine spermatocytesUnderstanding the regulatory mechanisms of mammalian gametogene-sis, fertilization, and embryonic development is key to effective livestock production and human reproductive medicine. This laboratory conducts research and education related to the elucidation of reproductive regu-latory pathways at the molecular, cellular, and tissue levels, as well as the development of new technologies for in vitro culture and manipulation of oocytes and embryos. Developmental BiotechnologyThe Division of Animal Science is dedicated to promoting the safe, effective, and sustainable management of animal resources. To fulfill its mission, The Division conducts research and education on animal biology based on genetic, biochemical, morphological, and immunological approaches, with an emphasis on understanding various biological functions and their regula-tion at the molecular, cellular, individual, and population levels. Animal ScienceWith our vast morphological findings and the latest knowledge of molecular biology, our laboratory aims to elucidate the sex deter-mination and differentiation process of the vertebrates. We are also studying the biological effects and epigenetic alterations by environmental chemicals. Methodological approaches focus on morphology and vary from the molecular to the biological level.Animal Molecular MorphologyImmunofluorescence staining of gonadal tissue harvested during the develop-mental stageDissection of mouse embryo for gonadal cultureDiagrams illustrating chemically induced changes in murine behavioral patternsControlTreatment with the study agent in combination with physical stressDevelopment of the method for preventing excessive accumulation of body fat in broiler chickensCharacterization of skeletal muscles in chicken thigh meatDevelopment of func-tional eggsResearch in this laboratory focuses on understanding the mech-anisms underlying appetite regulation, adipogenesis, and myo-genesis in chickens. The laboratory also has a major research interest in the development of functional ingredients to improve meat and egg production in chickens.Animal Nutrition and Metabolism11
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