Growth%20and%20Carcass%20F10

Growth%20and%20Carcass%20F10 - Growth, Development, and...

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Click to edit Master subtitle style 2/10/11 Growth, Development, and Preharvest Decisions ANSC 102 Purdue University Fall 2010
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2/10/11 Why is this important? Meat is a highly nutritious, coveted food item that is closely linked to the prosperity of a culture The meat animal industry accounts for ~50% of all US agriculture $$ today Ultimate goal is to provide a
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2/10/11 Challenges in Growing Meat Animals… Producing or obtaining animals that will perform well and yield a desirable product Managing animals to reach their production potential in a cost effective manner Being able to accurately predict when the animals are ready for
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2/10/11 So what do we look for in a live animal… Size / weight Breed / sex / type Indicators of fatness: Animals fatten front to back, top to bottom Muscle definition Any signs of illness, injury, etc
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2/10/11 Growth vs. Development Growth: the increase in size or amount of tissue similar to that of the original tissue Development: an increase in the complexity of a tissue, usually involves an increase in size as well
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2/10/11 Types of Cell Growth Hyperplasia : increase in cell number, almost exclusively prenatal Hypertrophy : increase in cell size, almost exclusively after birth Hyperplasia Hypertrophy Both
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2/10/11 Typical Growth Curve Time (age) weight Rapid growth phase, mostly lean muscle Time to market Increasing marbling / Decreasing feed efficiency
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2/10/11 Body Composition % of total carcass tim e Muscl e Fa t Bon e
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2/10/11 Phases of Growth Phase I : nursing dam, slow growth of all tissues Phase II : weaning to puberty, organs and bone completed, muscle
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This note was uploaded on 02/07/2011 for the course COM 114 taught by Professor Gill during the Fall '08 term at Purdue University-West Lafayette.

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Growth%20and%20Carcass%20F10 - Growth, Development, and...

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