JT8 —Lancaster Fanning, Saturday, November 5,1966
|» Net Energy
(Continued from Page 13)
gfoslted in the body as meat
and fait; and how much is fi
nally available for milk pro
duction.
He found that 'two feeds
equal in TDN might differ in
the proportion of nutritive val
ue going to productive use.
A fanner would obviously pre
fer a feed with more milk
making power to one resulting
in more urine or gases.
Flaftt calls this milk-making
power the net energy (NE) of
« feed. For beef cattle, NE
can also express a feed’s po
tential for meat production.
A dairy farmer, for example,
Blight want to calculate the
energy produced by a feed
when replacing part of 'the
concentrates in a ration witn
forage,
Since NE is more accurate
fftscn TI>N the farmer, by us
ing NE for his energy calcu
lating, would be more sure of
maintaining high milk produc
tion.
Determining the NE of a
feed under Flatit’s system of
sealing a cow inside a cham
fcea* requires much time and
Jahor even with computerized
equipment. Van Soest devel
oped his new method to sim
pSfy this process.
One of the traditional sys
tems which Van Soest’s meth
od may replace, the 100-year
old Weende system, attempts
to imitate an animal’s diges
tive processes by chemistry.
It yields two fractions called
“imtrogen-free extract” (NFE)
and “crude fiber” (CF).
NFE is relatively digestible,
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and CF is relatively indigesti
ble. The Weende system is in
accurate, however, because
NFE contains some feed com
ponents such as lignin which
cattle cannot digest; and CF
includes some fibers such ns
cellulose which cattle digest
easily.
Instead of trying to duplicate
natural digestion, Van Soest
based his system on the struc
tures of the plants he analyzes.
He found that the cell con
tents of a plant are almost
completely digested by all live
stock, and that ruminants also
digest cell walls to some ex
tent.
Van Soest determines, sep
arately, the feed value of cell
contents and of cell walls,
which he calls “neutral deter
gent fiber” (NDF). To find the
value of NDF, he determines
the total value of the cell wall
fibers cellulose and lignin,
which he calls “acid detergent
fiber” (ADF).
Then, he determines the pro-
Keep Good Things Happening
_ • • •
that’s strong
integrity .... in dynamic
leadership for Pennsylvania.
in
' Superbly qualified . . . Raymond P. Shafer
is big and likeable. From war hero to
Lieutenant Governor, he has a solid record.
Wild promises are not his style « » . just
honesty, integrity and PERFORMANCE, ,
FOR LIEUTENANT FOR SECRETARY,
GOVERNOR INTERNAL AFFAIRS
Raymond J. Broderick John K. Tabor
AT
Edwin D. Eshleman
16th District
VOTE Kept, lean Nov. 3
portion of lignin in ADF. This, greater in the tint*. -
h< finds provides « close estl- Van Soest’s system requires
mate of the digestibility of cell no more laboratory work than
walls. • the Weende system. 'Thus, the
A comparison of bromegrass new method is practical, not
and alfalfa hay illustrates the only for research, hut also for
value of Van Soest’s system, feed quality control work and
Samples of grass and legume rapid testing of Tsamples sub
hap who wish
'%.we^H mP*
system, because, thd&\crumsuffw
be? is equally- V* v . j
S best’s^ - Ssi j
tem would/ stow tbgt ’
the grass sample hps, mol|e?jjjp:
ber than the alfalfa'll miwfc
still be mprd digestitiJe-, jtp
ruminant because propdfe
tion of digestiblb-fl|ber
ratio of lignin tp '/ADF^-^JS,
'Jt* -gsfe
with the Republican
■Js?
in
Ray Shafer
For Governor
Sherman L. Hill, 100th District ' l «aff ,
• Harvey r,. N'itrauer, 102nd District
experience
Judge G. Harold
WatkinS
Judge Theodore C.
Spaulding
FOR STATE SENATORS
Richard A. Snyder, 13th District TT;
Clarence F. Manbeck, 48th District HT,
FOR REPRESENTATIVES IN THE
GENERAL ASSEMBLY; f]
Eugene S. Rutherford, 96th District W,
Marvin E. Miller, 97th District
Jack B. Horner, 98th District 7|f]
Harry H. Gring, 99th District
j£. ■ More farmers each
f month prefer to buy
I*' their
:• HAY :• STRAW
»m us for better value and all around satisfac
>n. At farm or delivered, any quantity as \out
quirements may be.
,Ask Code 717 687-7631
Si l
Esbenshude Turkey Farm
team
•• « t
..c
FOR SUPERIOR
COURT
:• EAR CORN
“America's Oldest **
PARADISE, PA.
Lancaster Co, - Republican .CAftKs**
, i. L, Slfirt lr., chairman
- George C.
to pinpoint Hie feeding
of their tttagea.
And the detergent
works esstly on mlxtm* s
different feeds such a> thou
in pellets. A me«nin»fui ]}
gestlbility estifwrte on nm?,
from a Weende analog •:
much more difficult to o >tai n 1