Dalton's introduction to practical animal breeding / Malcolm B. Willis.

CONTENTS

Traits in farm animals
classes of traits
measurement of traits
traits of importance

Mendelian principles and laws
the cell
sex chromosomes
Mendel's law of segregation
Mendel's law of independent assortment
multiple alleles
lethal genes
linkage
e.tc

Principles of population genetics
economic traits
variation
features of normal curves
threshold characters

Ways of changing gene frequencies
introduction
the hardy-weinberg law
assessing deleterious genes
e.tc

Selection for polygenic traits
introduction
heritability
calculating heritabilities
selection differential
e.tc

Aids to selection
pedigree information
performance testing
multiple records
progeny testing
e.tc

Selection for multiple objectives
introduction
relationship between characters
tandem selection
independent culling levels
e.tc

Breeding systems
introduction
species crossing
breed structure
e.tc

Crossing breeds
general
grading up
backcrossing
rotational crossing
e.tc

Breeding in practical terms
general principles
identification
dairy cattle breeding
beef cattle breeding
e.tc

Breeding schemes and future developments
introduction
group breeding sachem
artificial insemination
e.tc

Includes bibliographical references (p. [149]-153) and index.