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Fat Content
and
Composition of
Animal
Products
PROCEEDINGS OF A SYMPOSIUM
Washington, D.C.
December 12-13, 1974
BOARD ON AGRICULTURE AND
RENEWABLE RESOURCES
Commission on Natural Resources
and
FOOD AND NUTRITION BOARD
Assembly of Life Sciences
National Research Council
NATIONAL ACADEMY OF SCIENCES
Washington, D.C. 1976
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NOTICE: The project that is the subject of this report was approved by the Gov-
erning Board of the National Research Council, whose members are drawn from
the Councils of the National Academy of Sciences, the National Academy of
Engineering, and the Institute of Medicine. The members of the Committee respon-
sible for the report were chosen for their special competences and with regard for
appropriate balance.
This report has been reviewed by a group other than the authors according to
procedures approved by a Report Review Committee consisting of members of the
National Academy of Sciences, the National Academy of Engineering, and the
Institute of Medicine.
This study was supported in part by the U.S. Department of Agriculture and the
Food and Drug Administration of the U.S. Department of Health, Education, and
Welfare.
Library of Congress Cataloging in Publication Data
Main entry under title:
Fat content and composition of animal products.
Includes bibliographies.
1. Animal food-Fat content Congresses.
I. National Research Council. Board on Agriculture and Renewable Resources.
II. National Research Council. Food and Nutrition Board.
TX555.F37 664'.907 76-6496
ISBN 0-309-02440-4
A bailable f ram
Printing and Publishing Office, National Academy of Sciences
2101 Constitution Avenue, N.W., Washington, D.C. 20418
Printed in the United States of America
80 79 78 77 76 10 9 8 7 6 5 4 3 2 1
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Preface
This symposium, held on the occasion of the regular 1974 annual
meeting of the Food and Nutrition Board of the National Research
Council, represents the culmination of a 2-year effort of that Board
and the Board on Agriculture and Renewable Resources. As such it
recognizes both the agricultural and the human nutrition aspects of
the general issue of the quantity and composition of fats in foods of
· · .
amma ongm.
The program was developed by an organizing committee representing
the interests of both Boards to assess the need for change in fat quantity
and composition, production and marketing factors bearing thereon, and
certain aspects of human nutrition and dietary habits. These issues are
addressed in the context of widespread recognition of hunger in many
places, reduction in world food reserves, increased costs of animal feeds,
the interplay of market forces, the energy costs of converting plant
materials to animal tissue, and the shifts in diet that commonly ac-
company increasing affluence.
. . .
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Symposium
Organizing
Committee
G. A. LEVElLLE, Michigan State University, Co-Chairman
E. C. NABER, Ohio State University, Co-Chairman
B. R. BAUMGARDT, Pennsylvania State University
J. P. BOWLAND, University of Alberta
Z. E. CARPENTER, Texas A&M University
W. H. HALE, University of Arizona
L. M. HENDERSON, University of Minnesota
R. R. OLT]EN, Agricultural Research Service, USDA
B. S. SCHWEIGERT, University of California
M. L. SUNDE, University of Wisconsin
v
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BOARD ON AGRICULTURE
AND RENEWABLE RESOURCES
Sylvan H. Wittwer, Chairman
James S. Bethel
Lawrence Bogorad
Marion Clawson
Tony J. Cunha
Paul R. Eberts
Robert P. Hanson
Clifford M. Hardin
Clarence P. Idyll
Carl H. Krieger
Roy L. Lovvorn
Thomas C. Nelson
Charles E. Palm
John A. Pino
Gustav A. Swanson
D. Wynne Thorne
Cecil H. Wadleigh
C O M MI T T E E ON ANI M A L N U T RI T ION
Tony J. Cunha, Chairman
John P. Bowland
Charles W. Deyoe
William H. Hale
John E. Halver
Edward C. Naber
Robert R. Oltjen
Loris H. Schultz
Richard G. Warner
V1
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FOOD AND NUTRITION BOARD
( 1974)
Lloyd J. Filer, Jr., Chairman
H. N. Munro, Vice-Chairman
Richard H. Barnes
Harry P. Broquist
Doris H. Calloway
James P. Carter
David B. Coursin
E. M. Foster
Helen A. Guthrie
Robert M. Kark
Gilbert A. Leveille
Jean Mayer
Robert O. Nesheim
Daniel I. Padberg
Theodore B. Van Itallie
. ~
V11
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Contents
Introductory Remarks
L. J. Filer, Jr.
Overview of the Role of Animal Products in Human Nutrition
C. Edith Weir
Health-Related Aspects of Animal Products for Human
Consumption
H. N. Munro
The Consumer's Desire for Animal Products
A. M. Pearson
Altering Fat Content of Animal Products through Genetics,
Nutrition, and Management
Sylvan H. Wittwer
Genetics of Fat Content in Animal Products
R. L. Willham
Nutrition and Management Aspects of Ruminant Animals
Related to Reduction of Fat Content in Meat and Milk
John A. Marchello and William H. Hale
Nutrition and Management Aspects of Nonruminant Animals
Related to Reduction of Fat Content in Meat
Gerald F. Combs
· . .
vail
24
45
80
85
101
116
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Eliminating Excess Fat in Meat Animals 143
T. J. Cunha
Eating Quality of Meat Animal Products and Their Fat Content 147
G. C. Smith and Z. L. Carpenter
The Federal Grading System for Animal Products 183
John C. Pierce
Market Implications of Changing Fat Content of Milk and Dairy
Products 1 89
Truman F. Graf
Status Report on the Alteration of Fatty Acid and Sterol Com
position in Lipids in Meat, Milk, and Eggs
Joel Bitman
Commentary
Gilbert A. Leveille
Commentary
E. C. Naber
Participants
1X
200
238
240
245
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