Grant County herald. [volume] (Lancaster, Wis.) 1850-1968, 1874-03-26
Close Breeding.

In the r port of the Secretary Ct
be Michigan Board of Agriculturr,
inr 1872 Prot. NJ. Mile, OF Michigan
Agricultural Q iiege, has an EXTEND
cd article on Close Breeding or / :
and-i, breeding. which is iilus.rst ed
by number of diagrams showing
how cl ,sely INBRED were certain is-
nous animals of different breed.
Prot. Miles gives his CT ncluslons IN
the 70 wing summary
ALI distinguished breeders have
practioed close breeding TO greater
IT less extent, aud apparently with
the same object.-to FIX certain d.
tired characters in their stock, and
TO shut out all influences that send 10
produce q variation from their stand
,rd of exec nee.
Close breeding in itself considered,
foes not improve animals
Ali characters OF DO b parents are
Inherited by the offspring.
Clos, breeding fixes the dominans
characters and gives prepoteDey IL
he transmission of those CHAR ctere.
Anim.i, are varied by the condi-
IONS under which they are place d
and the supply OF ioud they receive
Tue most desirable characters ~
orr improved animals are highly =
ificiai. and they adapt the animal 10
special purposes.
An excessive development of an a .
ifieial character IN aspecli direction
is usu y accompanied by mod f.
cation of other parts Of the system,
aud q certain delicacy Of constitu-
ION.
The devsl >pment of special cha :
| ,cters with reference to u particular
standard. gives rise TO 'esembIances,
which constitute fan ly characteri
ice.
In attempts to engraft any new
character npon q family, care must
90 taken To prevent u lnss ct IN
typical peculiariiies OF the famil,
CT 80 breeding does MT i'll its' /
considered, injure animals.
Any defects arising IT. m other
causes vii however, TO fixed aud
thus lead 10 H. ia ious result.
The 10 -pr"iucing breeds are mo-
x J. TO show tendency 10 barre, :
loss, than those adapted 10 the pr :
iuc'ion of 10 TX and wool.
II gh fatLenlug qial ties are MOI t; :
cOrable to the aclive exercise OF til,
reproductive function. There is h
lose sympathy between the organs
f lactitIon and those Of reproduction
good mixers are usua ly good
breeders.
The reproductive organs are SONS :
ines affae.ed by fatty degenera-
ton"
With high faitening gu. lties oihe
functions may be impaired. thus Lad
ing indirectly to loss Of fecundnv.
Changes of food and habit wi Of
en- interfere with the healthy per
'nrmance Of the repre- ductive power
The fact that many high bred an.
nails are good breeders shows tina
lose breeding does not necessarily
ause batrcnuesr.
Animals that are closely r Lied
nay be separated aud kept undei
IF rent c'Ddltions, ard thus proven,
he dew pment of preci-e y the sam.
tend 'nclos in their orgah,Eatinr.
Zoo great d fferenc IN be C nj
IONS under which animals are pia =
d, will, however, produce diverge",
hnt Sh
cure the typical characteristics OF
the family.
A tendency TO Iosa ~ fertility maJ
% corrected oy breeding within tht
limits of the family, if the cha scLe,s
I one parent are supplemented bJ
uher unessential individual chara' :
tiers may sometimes be made with ad-
vantage on the sem principal.
Success in breeding will depend
upon The skill with which selections
are made. If animals are defective
IN organisation, o. have tendency
. the feeble performance Of any iuu'-
ion from lack of cbna'itu ion, their
Offspring VII inherit the same pecr-
Iarities, even if they are not closely
lred.
Close breeding in the hands Of ca. :
less and inexperienced hr. elders Cal :
not be too strongly Discouraged a.
it WI undouht 'dly result in fxiug
undesirable characters.
The highest success, however, ca,
pDly be attained by those who Pc
se.s the knowledge and skull reqnrso
IN fixing those slight variations 81
form al d qualities, that make III
nearest a proach 10 the standard I
perfectIor, ny judiciou- system 81
election mi cl ,se breeding.