BASC106A: SELECTION AND CULLING OF
PIGS
Prepared by:
Romeldrian N. Carique
Faculty Member
De La Salle Araneta University
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Methods of Selection
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SELECTION & CULLING DEMO VIDEOS
Selection
https://www.youtube.com/watch?v=huKBuRQ7Gp4
Culling
https://www.youtube.com/watch?v=GvFb4gglsOg
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A. PEDIGREE EVALUATION
This method relies heavily on ancestry records which at times are reliable, and in most cases, not
available.
B. INDIVIDUAL PERFORMANCE
This is the most common, simple, effective, and practical method. Based on this method, animal
are evaluated for traits that can be measured directly on them such as ADG and BF.
b1. Independent culling level = 1 trait
b2. Tandem Method = 2 or more traits are entirely independent from each
other.
C. SELECTION INDEX
The most efficient way of establishing genetic quality to improve the herd. However, this is
difficult to apply as it considers many traits along with their heritability, phenotypic and genotypic
correlations, and economic values of the different traits being considered in an index.
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Selection of Breeds
A. To start with, the breed
popular in the community
should be given priority.
Easily to replace
Always available
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Adaptable with the
environment and practices
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B. Experience and knowledge
As a beginner, start with crossbreeds because they
do not require the technology needed by
purebreds
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C. Target Market
Pointers in Selecting Breeders
Healthy, vigorous, and active
Free from hereditary defects and
diseases
Promise of good gainers and rapid
growers
Never purchase/ buy runts
Rapid growers usually comes from
highest weight at weaning
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Pointers in Replacing or Culling
1. Cull Gilts that
do not settle
inspire of
repeated matings
2. Cull Prolific
sow which
failed to wean
and healthy
piglets
6. Cull animal
found +
contagious/
infectious diseases
7. Cull boars that
have difficulty in
mounting
3. Cull sow that
do not reproduce
regularly
8. Remove weak
and runt piglets
4. Cull sow that
with poor maternal
instinct and
mothering ability
5. Cull animals
transmitting
undesirable traits
9. Dispose slow
growing pigs
10. Cull breeders
with feet problems
and damaged teats
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