Animals
who
are
____________________
are
complete
in
their
natural
growth
and
development
.
Being
able
to
recognize
signs
that
animals
are
at
this
stage
allow
producers
to
manage
processing
and
reproduction
.
If
a
producer
does
not
want
a
male
animal
to
reproduce
,
they
will
____________________
them
.
When
an
animal
does
reproduce
,
it
results
in
____________________
.
The
very
earliest
stage
of
development
of
this
new
animal
is
an
____________________
.
A
dairy
farmer
has
a
cow
that
produces
more
milk
than
any
of
the
other
cows
in
his
herd
.
He
would
love
to
have
very
many
more
cows
like
her
.
He
decides
to
use
some
of
his
lower
-
producing
cows
as
surrogates
and
uses
____________________
to
produce
several
offspring
from
this
one
cow
.
Researchers
discover
that
a
pig
involved
in
their
studies
produces
an
enzyme
that
has
cancer
-
fighting
properties
.
None
of
their
other
pigs
have
this
trait
.
They
want
to
continue
to
study
this
in
even
more
pigs
,
so
they
decide
to
use
____________________
to
create
more
pigs
with
the
same
DNA
.
Most
farmers
who
have
limited
labor
and
need
to
use
inexpensive
methods
use
____________________
to
produce
the
next
generation
in
their
herd
.
____________________
is
a
way
for
farmers
to
bring
in
next
genes
to
their
herd
without
having
to
physically
buy
and
take
care
of
multiple
males
animals
.
However
,
it
does
require
more
labor
and
specific
equipment
.
