Professor Samuel Brody

Prof BrodyProfessor Samuel Brody was a pioneer in studies of environmental physiology and animal bioenergetics. He was an alumnus of the University of California (A.B.; M.A.) and the University of Chicago (Ph.D.).

Professor Brody created a legacy of scientific advancement that was realized by his scholarly publications and the scientists educated in his laboratory.

Metabolism and growth of domestic animals were modeled, for the first time, using cutting-edge methodology and theory.

Techniques and models developed in Professor Brody's laboratory were adapted and applied to domestic livestock.

A testament to the long-standing impact was Professor Brody's book "Bioenergetics and Growth", published in 1945. This 1023 page work represents his first 25 years in the field and is considered by many scientists to be a tour de force in bioenergetics.Cow Spirometer

Professor Brody strove for an integrating principle "which would show by a word or a phrase the interrelatedness of all the phases of growth, development and aging with the energetic efficiencies and profits in milk, meat, eggs, and muscular work production through generalizing equations".Bioenergetics and growth

His now-famous graph that relates metabolism to body size for a wide variety of animals exemplifies this search.Brody graph

The Future

Future research interactions will allow for the determination of:

• relationships between the environment and animal performance

• the effects of environmental toxins and procedures for relief

• critical endpoints for production, reproduction and immune functions affected by environmental stress

• animal or species sensitivity to environmental stressors and development of:

• genetic markers that identify environmental stress in livestock

• strategies for stress relief that contribute to animal health and well-being

• nutritional regimes to produce efficient growth and development in different environment

BEC Goals


• Biosensor technology that allow for real-time assessment of health status for domestic animals

• Integrated systems that utilize animals thermal balance, ambient conditions, and predicted weather patterns to operate animal comfort systems

• Animal management and comfort systems that reduce environmental stress to enhance animal health and performance

• Understanding of changes in animal gene expression associated with environmental stress

• Scientists who will develop practical solutions for long-term problems of climate change that are associated with global warming and air quality

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Today's Challenges

Annual impact of environment on health and general well-being of animals in agriculture totals is at least $8 billion.

Summer heat stress reduces milk production rate and reproductive efficiency of dairy cows to produce an annual loss of $5-6 billion.

More than 22 million acres of fescue produced for over 7 million cattle are infected with a fungus. Consumption of infected fescue and exposure to heat stress produces reproductive losses and reduced weight gain that results in a $600 million annual loss to beef cattle producers.

Heat stress depressed profitability of swine production, with reduced feed intake, growth rate, lean tissue accretion, lactation.

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