lec 21 GrowthMuscleProduction

lec 21 GrowthMuscleProduction - Growth and Muscle...

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6/11/11 1 Growth and Muscle Production 32 The goal of these lectures is to discuss basic physiology associated with the control of growth and muscle production. The sections for this lecture are: Life is a series of chemical reactions occurring in compartmentalized environments. The main purpose of life is to keep itself alive Physiology, the study of how life works, is based on the simultaneous occurrence of the following three concepts: levels of organization structure / function relationship homeostatic regulation Animal growth and animal development Muscle: structure, myogenesis, growth Notes on whole-body growth Notes on hormonal regulation of growth Growth & Muscle Development 1950 Muscle Production involve homeostatic responses leading to a steady state that is borderline to a pathological state (thus they are more susceptible to diseases). today Growth, general and normal expansion of size as produced by accretion of tissues similar in constitution to that of original tissue or organ Hypertrophy, cells increase in size Hyperplasia, cells increase in number Accretion, cells accumulate or secrete True growth, e.g. increase in muscle/bone Fattening, accumulation of fat Whole body growth, from cell changes up Development, temporal collective changes
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6/11/11 2 Human Growth & Development Average daily gain, or the daily increase in weight, is a direct reflection of the human and farm animal’s ability to grow. Muscle growth, a main tissue that increased its weight, does so by multiple reasons, ultimately affecting undifferentiated muscle cells. Mother & son. At 8-foot-4, Leonid Stadnik, 33 years old, is the tallest human being on the planet (2005) Arnold Schwarzenegger. He won several world bodybuilders competitions and until recently was the governor of California. Animal Growth & Development Average daily gain, or the daily increase in weight, is a direct reflection of the human and farm animal’s ability to grow. Muscle growth, a main tissue that increased its weight, does so by multiple reasons, ultimately affecting undifferentiated muscle cells.
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6/11/11 3 Animal Growth & Development 1950 Average daily gain, or the daily increase in weight, is a direct reflection of the animal’s ability to grow. By increasing it, producers can rise more livestock in a given amount of time (compare increase efficiency or gain vs. fat / lean ratios vs. profitability). today Market Hog Performance Animal Growth & Development 1950 Average daily gain, or the daily increase in weight, is a direct reflection of the animal’s ability to grow. By increasing it, producers can rise more livestock in a given amount of time (compare increase efficiency or gain vs. fat / lean ratios vs. profitability). today The economic contribution of meat animal production in the USA is significant (approx.
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lec 21 GrowthMuscleProduction - Growth and Muscle...

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