As long as any
breed standards allow for any form of split teat formation in Boer goats,
there will always be a problem with teat formation. Breeders must bend over
and look, see what is really there, and breed or cull their stock accordingly.
In 1994, we started selecting for single, clean
teat udder formation. In the breeding program, we selected sires with strong
conformation, good feet and bite, powerful muscling, good spring of rib and a
clean one-and-one teat formation. Finding clean one-and-one teats in 1994 was
much more of a challenge then than it is now. That was a breed standard we set
for our own herd. We are not by any stretch suggesting that this must be a
breed standard, but the breed standard should discriminate against any form of
split or cluster teat.
Most North American breed standards state the
following (or something very similar):
" A doe should have a well-developed udder
which is firmly attached. Boer goats were developed to produce multiple kids.
For this reason, South African producers selectively bred them to have more
than two teats that other goats have in order to feed triplets and
quadruplets. One or two functional teats on each side are acceptable. A split
teat is acceptable if it is not joined for more than 50% of its length. In all
cases, the final judgement should be made according to whether the kid can
successfully take milk from the teat."
The defects vary from association to
association, but lets take a look at this breed standard. All goats, whether
dairy, fiber, pack or pet produce multiple kids. It is what goats do, the norm
is to produce twins but triplets and quadruplets are also common. Look at any
breed description for goats or any specific breed of goats; this is not
something new. Split, fish, calbash and cluster teats are primarily generic to
Boer goats. Many dairy goats will also produce triplets and quadruplets and
will successfully raise those kids with two teats. The issue is not the number
of teats on the udder; the issue is how much milk is in the udder. Look at any
other species (mammal) and these types of teat formation are not seen nor
accepted.
The South Africans may only require functional
teats, but that does not mean that we can't raise the standard. There has been
some suggestion that it will take 35 to 50 years to consistently get only two
teats on Boer goats. I would strongly disagree.
We have been selectively breeding for a
one-and-one clean formation since 1994, primarily through sire selection. All
herd sires used have only had a one-and-one clean teat formation, as well as
displaying strong conformation, muscling, correct bite, etc. The teat
formation is an addition to basic selection criteria. Each year we have
continued to bring in new genetic material. The majority of the kids produced
that have malformed teats are the produce of the new genetic
import.
|
RESULTS
OF SELECTIVE BREEDING
|
|
YEAR |
#
of Kids Born |
#
of Kids w/ clean teats* |
#
of Kids w/ 1&1 teats** |
#
of Kids w/ malformed teats*** |
|
1996 |
256 |
inc.
data |
12 |
inc.
data |
|
1997 |
369 |
inc.
data |
49 |
inc.
data |
|
1998 |
502 |
263
(52%) |
171
(34%) |
68
(14%) |
|
1999 |
473 |
231
(49%) |
184
(12%) |
58
(12%) |
|
2000 |
614 |
240
(39%) |
300
(12%) |
74
(12%) |
|
*
this category represents all kids born with clean udder formations,
fully separated teats including 2 and 2 teats per side, 2 and 1 teats
per side
** this category only includes kids with one and one teats totally
clean
*** this category represents all kids with any malformation, including
any teat counts in excess of two teats (i.e. 3) on one side as well as
any joined teats including any teats that are joined less than 50%, or
not having separation at the base of the teat attachment to the udder. |
The numbers show that through selective
breeding and using production data, that clean udder formations are
obtainable. This may not be 100 percent but it will definitely be the majority
as we continue to selectively mate the Boers. Our experience has shown the
teat formation of sires tends to be dominant.
I am not suggesting that all Boers having split
teats or other teat malformations be slaughtered or culled from stud breeding
programs, but we do need to recognize that this is a congenital fault and
we need to have selective breeding to eliminate the fault.
There are a number of great does one can
purchase that may not have perfect teat structure but present numerous other
positive characteristics. Buyers should not necessarily discriminate against
these does. With careful selection of sires in the breeding program, some
wonderful progeny may result.
This is where herd records become so vital.
Given the following (exert from Message From the CEO, by Jim MnMorries, Boer
Breeder, Fall 2000)
" I do not want to get on a soapbox, but
we have a problem with teat alterations. The judges tell me that at every show
they find many of the goats with scars and one judge said he found stitches
still in the goat from teat removal. This is wrong and we must get a handle on
this problem."
Buyers need to be very careful about who they
are purchasing stock from. Is the owner of the animal a credible breeder? Does
he/she have integrity and herd production data records or a good vet with
surgical skills?
In the long run, the breeder exercising
corrective surgery is only fooling himself: unfortunately the industry will
also be scarred. Perhaps this is an issue the various associations need to
consider and take some serious action to prevent, or at the very least,
severely penalize.
Split teats are a problem. There is not an easy
fix (corrective surgery), but there is a solution to the problem and that is
to incorporate selective matings for animals existing in your herd today.
When purchasing stock, only purchase from buyers who
can show you some historical production records and, finally, put some
pressure on the associations to toughen breed standards for the show ring.
Often, if a breed characteristic (fault) is eliminated in the show ring, in
time, it will disappear altogether.
|