ANSC 303 Lecture Notes - Free Range, Lactation, Starch
11 Feb 2014
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What is animal nutrition: efficient conversion of feedstuffs by animals into high quality food for human consumption. Eggs: optimal use of feedstuffs for maximum performance or longevity. Longevity- will sacrifice optimum growth for something like a pet because we want them to live longer. Importance of animal nutrition: for most livestock production systems, feed costs represent 50-60% of total operating costs (60% is usually the percentage for dairy cattle) Adg - how many lbs are you gaining per day. Not hard to maximize but usually not because of funds. You want as high a number as possible. Want it to be as low as possible. Feed additives are used to help out feed efficiency so we can have a lower cost. Also want this to be a low number: over feeding is wasteful and underfeeding decreases animal performance. Nutrient requirements change from species to species and throughout an animals life.
