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EQUATIONS RELATING THE COMPOSITION OF BEEF CATTLE HERDS TO CERTAIN BASIC DATA

EQUATIONS RELATING THE COMPOSITION OF BEEF CATTLE HERDS TO CERTAIN BASIC DATA EQUATIONS RELATING THE COMPPOSITION OF BEEF CATTLE HERDS TO CERTAIN BASIC DATA W. GRANGER, B.V.Sc., AND J. D. WALSH, B.A. Equations are derived which relate the components of beef cattle herds to certain basic data. By enabling the construction of series of models to represent real or theoretical situations the equations provide a useful tool for analysing the influence of selected factors upon herds or populations-particularly upon their components, turnoff, and prac- ticable rates of selection. The technique should be useful in economic, animal husbandry, and genetic studies, where decisions have to be taken upon management policy, and in evaluating proposals for private or public investments in station improvements or utilities for the cattle industry. The Equations The mixed herd or population of beef cattle comprises, according to the pattern of husbandry adopted, some or all of the following categories of stock: breeders, castrated males of various ages; females of various ages, up to the age at which they are either classed into the breeders or culled; culled females possibly speyed and possibly of various ages; females cast from the breeding herd comprising possibly groups which have been held for varying periods after casting; and bulls.’ If certain basic http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Australian Journal of Agricultural Resource Economics Wiley

EQUATIONS RELATING THE COMPOSITION OF BEEF CATTLE HERDS TO CERTAIN BASIC DATA

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Publisher
Wiley
Copyright
Copyright © 1959 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1364-985X
eISSN
1467-8489
DOI
10.1111/j.1467-8489.1959.tb00259.x
Publisher site
See Article on Publisher Site

Abstract

EQUATIONS RELATING THE COMPPOSITION OF BEEF CATTLE HERDS TO CERTAIN BASIC DATA W. GRANGER, B.V.Sc., AND J. D. WALSH, B.A. Equations are derived which relate the components of beef cattle herds to certain basic data. By enabling the construction of series of models to represent real or theoretical situations the equations provide a useful tool for analysing the influence of selected factors upon herds or populations-particularly upon their components, turnoff, and prac- ticable rates of selection. The technique should be useful in economic, animal husbandry, and genetic studies, where decisions have to be taken upon management policy, and in evaluating proposals for private or public investments in station improvements or utilities for the cattle industry. The Equations The mixed herd or population of beef cattle comprises, according to the pattern of husbandry adopted, some or all of the following categories of stock: breeders, castrated males of various ages; females of various ages, up to the age at which they are either classed into the breeders or culled; culled females possibly speyed and possibly of various ages; females cast from the breeding herd comprising possibly groups which have been held for varying periods after casting; and bulls.’ If certain basic

Journal

The Australian Journal of Agricultural Resource EconomicsWiley

Published: Dec 1, 1959

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