Chapter 18-Growth and Development

Chapter 18-Growth - GROWTH DEVELOPMENT What is Growth 1 Growth a An in body weight until mature size is reached b Result of in cell size cell

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What is Growth? 1. Growth a. An ↑ in body weight until mature size is reached b. w/ protein deposition resulting c. An ↑ in mass of structural tissue bone, muscle, connective tissue i. 2. Development a. Directive coordination of all diverse processes until maturity is reached Prenatal (Livestock) 1. Three Phases a. Sex Cells b. Embryo c. Fetus 2. Greatest ↑ in Prenatal Weight? a. Last trimester of pregnancy 3. Hyperplasia a. ↑ in number of fibers b. Causes ↑ in muscle weight 1. During 1 st 2/3 of prenatal period 4. Hypertrophy a. ↑ in size of fibers b. Represents most muscle growth 1. Birth (Livestock) 1. Birth weight = 5-7% mature weight 2. Birth leg length = 60% mature 3. Birth height = 50% mature 4. than proximal parts (hips and chest) Poultry 1. Embryonic Development a. Blastroderm i. A germ spot in every egg—fertile or unfertile 1. where chick embryo develops if fertile egg is properly incubated
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This note was uploaded on 04/03/2010 for the course ANS 2 taught by Professor Murray,j during the Spring '08 term at UC Davis.

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Chapter 18-Growth - GROWTH DEVELOPMENT What is Growth 1 Growth a An in body weight until mature size is reached b Result of in cell size cell

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