A single boar may be set up in a harem
with from four to 20 sows, although 10 females is generally considered to
be optimal. This system probably provides maximum production per unit
of space and expense, and is generally used for out-cross, conventional
breeding. A thriving, polygamous group will contain young in all stages
from birth to weaning, at any given time. As a consequence, it is
important to remove weanlings at 21 days to ensure that they do not get
bred by their sires. A further problem encountered is one where older
These are not generally used in outbred
colonies due to the numerous boars that must be maintained and the
great outlay in caging and personnel time involved. However, the system
is the most productive in absolute terms and is well suited to the small
colony, particularly where inbreeding and careful selection is to be
practised.
A single boar may be set up in a haremwith from four to 20 sows, although 10 females is generally considered tobe optimal. This system probably provides maximum production per unitof space and expense, and is generally used for out-cross, conventionalbreeding. A thriving, polygamous group will contain young in all stagesfrom birth to weaning, at any given time. As a consequence, it isimportant to remove weanlings at 21 days to ensure that they do not getbred by their sires. A further problem encountered is one where olderThese are not generally used in outbredcolonies due to the numerous boars that must be maintained and thegreat outlay in caging and personnel time involved. However, the systemis the most productive in absolute terms and is well suited to the smallcolony, particularly where inbreeding and careful selection is to bepractised.
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