Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Principles of zoo animal feeding: introduction

Principles of zoo animal feeding: introduction The energy needs of animals and birds are not related in a simple way to body weight but are related roughly to the surface area of the body and in turn to the rate at which heat is lost from the body. An adult animal that is neither gaining nor losing weight is in energy equihbrium, which means that the food it eats provides sufficientenergy to balance the work of digestion, metabolism and exercise after allowance is made for the energy contents of undigested food and other residues excreted in the faeces and waste products in the urine. In determining this balance, energy is always expressed as heat and under these circumstances the energy given off by the body is the same as the energy derived by the animal from the food. Since animals and birds are three dimensional their surface area varies in relation to their weight in the same way as it does for geometrically similar bodies of dderent sizes and of the same substance. The analogy is not exact as animals are not geometrically similar. The larger the animal the smaller is its surface area in relation to its weight and vice versa. For t http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Zoo Yearbook Wiley

Principles of zoo animal feeding: introduction

PHILLIPSON, A. T.
International Zoo Yearbook , Volume 16 (1) – Jan 1, 1976
Download PDF
3 pages

Loading next page...
 
/lp/wiley/principles-of-zoo-animal-feeding-introduction-djKrdtPEeL

References (0)

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
Wiley
Copyright
Copyright © 1976 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0074-9664
eISSN
1748-1090
DOI
10.1111/j.1748-1090.1976.tb00118.x
Publisher site
See Article on Publisher Site

Abstract

The energy needs of animals and birds are not related in a simple way to body weight but are related roughly to the surface area of the body and in turn to the rate at which heat is lost from the body. An adult animal that is neither gaining nor losing weight is in energy equihbrium, which means that the food it eats provides sufficientenergy to balance the work of digestion, metabolism and exercise after allowance is made for the energy contents of undigested food and other residues excreted in the faeces and waste products in the urine. In determining this balance, energy is always expressed as heat and under these circumstances the energy given off by the body is the same as the energy derived by the animal from the food. Since animals and birds are three dimensional their surface area varies in relation to their weight in the same way as it does for geometrically similar bodies of dderent sizes and of the same substance. The analogy is not exact as animals are not geometrically similar. The larger the animal the smaller is its surface area in relation to its weight and vice versa. For t

Journal

International Zoo Yearbook – Wiley

Published: Jan 1, 1976

There are no references for this article.