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Animal Physiology Lab
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The lab investigates the physiology of ruminants, aiming to create sustainable husbandry technologies.
AboutAbout the lab
Studying ruminants scientifically!
The Animal Physiology Lab studies the physiology of digestion and nutrition in ruminants such as beef cattle, dairy cows, and sheep.
For beef cattle, it analyzes "physiological and biological information" that combines data ranging from blood and rumen components and gene expression in tissues to performance at shipment, aiming to create husbandry technologies.
For dairy cows, it works on developing technologies to lower the risk of diseases and reproductive disorders that are common around calving.
The lab originated in the livestock physiology chair of the Faculty of Agriculture at Tohoku Imperial University, and it also values developing people through research.
Key terms
- Rumen
- Part of the stomach of ruminants such as cattle; an organ that plays an important role in feed fermentation
- Adipokine
- A substance secreted from adipose tissue that is involved in regulating metabolism and endocrine function. Those secreted from the liver are called hepatokines
- Immunometabolism
- The mechanisms by which the immune system and the metabolic system influence each other at the cell and organ level, and the field that studies them
NewsLab news
A paper from a joint study by a graduate and Itochu Feed Mills is published in Animal Bioscience
A joint review with a graduate is published in Meat Science
A doctoral student's paper on methane emissions is accepted by Animal Science Journal
A doctoral student's paper on measuring methane-reduction effects is published in Animal Bioscience
A joint study paper with a graduate as first author is published in Animal Science Journal
ResearchResearch themes
The Animal Physiology Lab studies ruminants scientifically, aiming to create husbandry technologies for beef cattle, dairy cows, and sheep that enable sustainable production. In addition to the physiology of digestion and nutrition and the mechanisms of metabolism and endocrine function in cattle, it examines the relationship between immunity and metabolism in periparturient dairy cows (immunometabolism).
*Illustrative imageChanges in the digestive tract and endocrine system at weaning
At weaning, the diet shifts from liquid milk to solid feed, and the functions of the digestive tract and endocrine system change as well. The lab showed that growth hormone (GH) secretion increases when milk is fed to young animals and decreases when adults eat solid feed.
*Illustrative imageSearching for factors that regulate metabolism and endocrine function
The lab studies how adipokines and hepatokines, which play important roles in lipid accumulation, glycolipid metabolism, and endocrine networks, are regulated in the body. It aims to show new directions for nutritional management of Japanese Black cattle and dairy cows.
*Illustrative imageMechanisms that maintain rumen homeostasis
The rumen is an organ that plays an important role in feed fermentation in ruminants. Using next-generation sequencing, the lab selects candidate genes involved in the formation and development of villus tissue, and analyzes gene function in tissue from cattle raised under different feeding conditions.
*Illustrative imagePhysiological characteristics of cattle with high methane emissions
In Japanese Black cattle from the early to late fattening period, the lab measured methane emissions, concentrations of blood metabolites, hormones, and amino acids, the properties of rumen fluid, and gene expression in the liver, and clarified their relationship with methane production. The results suggested that high-methane-emitting cattle may actively utilize amino acids.
MembersFaculty
The Animal Physiology Lab's members consist of faculty, postdoctoral researchers, research fellows, technical assistants, assistants, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorSang-Gun Roh
- Associate ProfessorSatoshi Haga
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Grazing cattle on a pasture in eastern New Mexico” Quintin Soloviev / CC0 (cropped)
- Changes in the digestive tract and endocrine system at weaning: “The calf drinks the milk from the cow's udder” Harsha099 / CC0 (cropped)
- Searching for factors that regulate metabolism and endocrine function: “Beef cattle in a feedlot in New Mexico” Quintin Soloviev / CC0 (cropped)
- Mechanisms that maintain rumen homeostasis: “Cattle, feeding on silage, at East Ridge Farm - geograph.org.uk - 1626473” Roger Cornfoot / CC BY-SA 2.0 (cropped)
- Physiological characteristics of cattle with high methane emissions: “Tajimagyu2” Japanexperterna.se / CC BY-SA 3.0 (cropped)
- Related lab (Animal Nutritional Biochemistry Lab): “Senyum Peternak Ayam Petelur” Achmad Fazeri / CC BY-SA 4.0 (cropped)
- Related lab (Plant Engineering for Environmental Adaptation Lab): “Ripening rice plants in paddy field, Indonesia” Undeka 11 / CC BY-SA 4.0 (cropped)
- Related lab (Animal Environmental Management Lab): “Mosquitoes in cup” Bluerasberry / CC BY-SA 3.0 (cropped)
- Related lab (Animal Functional Morphology Lab): “Cows and calves in the project dairy barn - DPLA - c909d9085531ee0ff2c67” Rothstein, Arthur / Public domain (cropped)
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