The Role Of The Laboratory
Rat In Nutrition Research
Long-term studies with labo-
Jratory rats are providing infor
mation that may help answer
some of the mysteries of human
nutrition, the U.S. Department
of Agriculture reports.
Among the resulting benefits
is the knowlege that animals
with different genetic back
grounds respond differently to
various kinds of diets, a re
search nutritionist with USDA’s
Agricultural Research Service
said yesterday.
Mrs. Mary W. Mai shall, in a
talk before the 4th Internation
al Conference on Laboratory
Animals held in Washington,
D. C , described work with rats
CARNATION FARMS BREEDING SERVICE
Born: 6/27/66
067 CARNATION MILLION HEIR VGB9
Million Heir has a golden pedigree that
combines the breeding of Osborndale Ivanhoe,
who is considered by many to be the greatest
A.I. sire of all times, with that of Texal Rich-
Herd Lily, the powerful Excellent (94). All-
American.
The size, strength and smoothness exhibited
by Million Heir indicates he will sire tall, power
ful daughters capable of high production. ~
'' ' k J * • !
: *i* „ > .1. <*4
s?; , - W '••»•?*)
OSBORNDALE IVANHOE
Excellent Gold Medal
10898 Daus. Avg. 14,88 M 554 F
Pred Diff. +63OM +23F
3361 Cl. Daus. Avg. 81.6 102.2% BAA
HIS MATERNAL SISTER
CARNATION SALLY TEXAL
LILY
Sold to Japan at 2 years
5y 3x 365 31,912 M 838 F
(In Japan)
JOSEPH P. TRAINOR, honey brook, pa.
in the ARS Human Nutntion
Research Division as an effort
to determine why and to
what extent humans vary in
their nutritional requirements.
Explaining that laboratory
rats are used extensively in
nutrition studies because of
their similarity to humans in
the way they metabolize and use
food, Mrs Marshall cited studies
showing that the fat metabolism
of two strains of rats differed
even though both groups were
fed the same diets The res
ponse varied with the type of
carbohydate, fat, or cholesterol
contained in the food. Parallel
experiments dealt with res
067 CARNATION MILLION HEIR
HIS SIRE
♦.Tv
Ph. 215-273-3847 or 717-768-3431
ponse to type of carbohydrate
of five rat strains, two of which
have been maintained in the
Beltsville laboratory under
identical conditions for more
than 10 years.
Results of this and other re
search indicate that metabolic
patterns may vary in rats of dif
ferent stiains as well as in in
dividual rats within the same
strain Such variations, Mrs
Marshall said, may be due to a
number of possible metabolic
defects, most of them also found
in some humans For instance,
an increasing number of indivi
duals sensitive to cai bohydrates
HIS MATERNAL SISTER
MAPLE LILY BURKE
Excellent
6y 2x 365 19.824 M 690 F
Her Daughter Excellent
HIS DAM
TEXAL RICH-HERD LILY
Excellent (94) 4E-lst 4E Cow of Breed
9y 3x 365 24,696 M 3.8% 944 F
Also records of 814, 889, 898 F
are being identified These
people whose fat and glucose
metabolism is not normal, are
said to have a "high risk” po
tential foi atheiosclerosis.
When animals are used to ex
plain food needs of people,
scientists have to know and
study their specific inherited
characteristics so as to propeily
intei pret reseaich lesults and
establish a baseline upon which
individual response to a paiticu
lar diet can be measured
Such characteristics as body
size, body measurements, high
or low levels of blod choles
teiol, organ weights, liver com
position, blood and Dody com
position, incidence of kidney
disease, and degree of voluntary
activity, all vary with strain,
age, and sex of animal.
Reg. No. 1507983
LILY’S GRANDDAUGHTER
RICH-HERD IDEAL LAURA
Excellent
3y 4m 2x 365 15.162 M 517 F
4y 9m 2x 284 19.129 M 700 F
(me )
Lancaster Farming, Saturday, April 12,1969—25
Cannot Perspire
The dog cannot pei spites as
human beings do When it be
comes waim in summer, it
sticks out its tongue and pants,
cooling off its body by the extra
air it breathes in this way
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