Texas Dairy Review (Stephenville, Tex.), Vol. 1, No. 6, Ed. 1 Thursday, August 6, 1992 Page: 5 of 29
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Feed
Uoa of nitrogen. It awunet that
all nitrogen in plant material is
from protein and that all proteins
contain 16% nitrogen. These
assumptions are not entirely true.
There are other plant components
that contain nitrogen and not all
proteins contain 16% nitrogen.
Although this analysis is not ideal,
it may be the most practical at
this time since a more precise
analysis is cost prohibitive, and if-
is probably precise enough for our
day to day purposes.
Example: 3.36% Nitrogen (dry
matter basis) * 21% Crude Pro-
tein .16 (dry matter basis) OR
3.36% Nitrogen X 6.25 - 21%
Crude Protein (dry matter basis)
(dry matter bads)
Both methods will yield the
same answer since 6.25 is the
inverse of .16.
There are basicly two types of
laboratories. There are those
which use wet chemistry, which is
the more traditional type, and
those which-use Near Infrared
Analysis (NIR). Both can be very
reliable if they use proper pro-
cedures and the proper checks
and balances.
Ovdt fki: This analysis is sup-
posed to represent the lipid por-
tion of the feed. A dried and
ground sample is weighed into
vessel which has a porous bottom
and heated and then condensed
diethyl ether (ether as we know it)
is allowed to pass through the
sample for a specified length of
time. This extracts the com-
ponents in the sample that arc
soluble in this compound. These
components are supposed to
lipids. This is not necessarily the
situation. Some other plant com-
ponents, such as certain pigments,
are also extracted. Again, this is
probably as reasonable an analysis
for us to use in our practical
application of feed analysis.
Crude Filter This analysis was
designed to represent the less well
digested carbohydrates in feeds.
The determination is made by
first boiling a sample in a specific
acidic solution followed by boiling
in a specific alkaline solution. The
resulting residue is determined to
be the Crude Fiber fraction of the
feed. Although this feed analysis
value is still used by many people
today, other methods have been
devised that give us more useful
information. These arc the Acid
Detergent Fiber (ADF) and Neu-
tral Detergent Fiber (NDF)
values that you will often find on
TEXAS CAMPY ECVKW
your feed analysis report. The
uses, advantages and disadvan-
tages of these three different fiber
analyses will be discussed' in a
future article. The major problem
with a true crude fiber analysis is
that some components arc ex-
tracted that arc actually utilized
by the ruminant as fiber com-
ponents. Thus we have an analysis
that does not include all of the
fiber components and does mu
give us a good indication of how
well the ruminant will utilize that
fiber.
AsAAsh represents the mineral
portion of the feedstuff. The ana-
lysis is relatively simple. The sam-
ple is placed in a furnace at an
extremely high temperature and
allowed to incinerate. The residue
which remains is said to be the
ash. The problem with this analy-
sis is that although we may know
what the total mineral content of
our feed is, it does not tell what
minerals and what proportions
those minerals are in. This analy-
sis can give us certain informa-
tion. If an analysis has a much
higher than normal Ash we
may look at our individual
mineral analysis with a slanted
eye. This is because our high ash
value may have Ivon due to
contamination, possibly with soil.
Nitmjxn /hr /iMr.n f (S/'H):
PACE A
_ Comtimmcd frmm Page 4
This portion of the scheme was
intended to represent the more
highly digested carbohydrates. 4hc
starcbcs and sugars. Its' analysis is
the easiest of them aM. You lake
HMK; and subtract from it the
percentages of Mtxsiurc. Crude
Protein. Crude l:ai. Crude Fiber
and Ash. The value that is Adi
over is suppttsed to represent 4he
Nitrogen I rec Fjttract. You can
see why many people have clai-
med that Nil actually stands tor
“not found elsewhere". The rlaCfi-
culiv with this analysis is obvious.
One. it is not an analysis al aM.
and two. any mistake in any of the
other analysis would also he
reflected in the Nil- value.
TABLE 1
CORN SILAGE ANALYSIS
Basis
Component
As F ed
Dry Mailer
Air Dry
Moisture, %
71 Milt
0.00
lotto
• Dry Mailer, %
30.00
100.00
Crude Protein, %
2.40
H.IMI
7.20
Crude Fat, %
.90
3.00
lib
Crude Fiber, %
7.20
24.00
21.Ml
Ash. %
1.35
4.50
4.115
Nitrogen Free Extract, 'A
18.15
60.50
54.45
Toby Stone Real Estate
Proudly Serving
the Dairy Industry
1481 S. Loop
Stephenville, Tx. 76401
"fii
Dairy Site-670 Acres-Good fences and working corrals. Improved grasses on most. Cross fenced,
2/100 milking cow permit applied lor. 1795.00 Per Acre.
Daily - 243-Acrea-Johnson County, 120 acres coastal. 10-yr-old double 8 ham, large covered holding
and working pens, 3,000 gal rank, feed system, 2 mobile homes.
Dairy • 408 Acres-ntw double 16 parallel parlor (double If) equip.) 2 Homes - I restored KMI-yr.-old
colonial frame 4,200 sq. It 1 five-year-old 3 bed, 2 bath brick, 2,800 sq. ft. commodity barn, water
permit for 990 cows.
Tura Key Set Up Por 200-250 Cows. 75 Acres, Double 6 Herringbone, Feed Lane & Lockup s for
200 cows. Nice 3 bedroom, 2 bath modular home, mobiles for employees, irrigation equipment.
Gary Lloyd
(817)968-4805 Office
(817)968-2148 Home
(817)977-7863 Mobile
INDEPENDENT SERVICES
Service. Sales & Installation
24-Hour Service
2300 Linyleville Hwy., Off. #3
DC lAVAL
Dairy SptciliiUI
Tommy Kneeland will do his udder best to sermon the
dairyman's equipment needs. Specializing in new dairies,
remodel jobs and repair of existing equipment. Working on a
contract basis with Lone Star Dairy Equipment, he has Beco,
DeLaval and Universal parts available.
Office: 965-4048
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Webb, Sherry. Texas Dairy Review (Stephenville, Tex.), Vol. 1, No. 6, Ed. 1 Thursday, August 6, 1992, newspaper, August 6, 1992; Stephenville, Texas. (https://texashistory.unt.edu/ark:/67531/metapth768184/m1/5/?q=%22thurber+%22~1: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; .