Livestock maiket
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and auction news
Carlisle Auction
Carlisle, Pa.
Tuesday, Nov. 24
Report supplied by auction
CATTLE: STEERS: Good 57.50
59.00; Standard 46.25-55.00.
HEIFERS: Good 51.75-56.75;
Standard 45.25-48.00; Utility 41.00.
COWS: Utility & Commercial
39.75-42.75; Cutter 36,50-40.00;
Canner & Low Cutter 33.00-36.00.
BULLOCKS: Good 45.2548.00.
FEEDER STEERS: 57.0065.00.
CATTLE HEIFERS: 50.0043.00.
BULLS: 48.0067.00.
CALVES: VEALERS: Choice
94.00-106.00; 'Good 75.0095.00;
Standard & Good 60.0080.00;
Standard & Good 55.0070.00.
HOGS; Barrows & Gilts US No.
1- 44.75-46.50; US No. 1-3 38.00
44.50; US No. 2-3 35.0039.00.
SOWS: US No. 1-3 40.0042.50; No.
2- Boars 33.5034.25.
FEEDER PIGS: US No. 1-3
16.0025.00; No. 1-328.0032.00.
SHEEP: LAMBS: Good 35.00
43.00.
Indiana Auction
Homer City, PA
Thursday, Dec. 3
Report supplied by PDA
CATTLE: 114. Compared with
FA PM FI? Q - PWMNINe
rnl\rlCt\o TO BUILD?
Dairy Barn
Poultry House
Hog House
BUILDINGS ARE
COVERED WITH
REYNOLDS
ROOFING & SIDING
DESIGNERS & BUILDERS of SYSTEMS
last week’s market: SI. steers: few
Good & low Choice 53.75-58.75;
Standard 45.25-51.25; SI. heifers:
couple Good 47.50-48.25; few
Standard 39.0043.50; few Utility
34.0039.00; SI. cows: Utility &
Commercial 37.50-42.00, one at
43.25; Cutters 35.00-38.00; Canner
& L. Cutter 27.25-35.50; Shells down
to 22.50. SI. bulls: few Yield Grade
No. 1,955-1905 lbs. 47.5050.75.
FEEDERS CATTLE: Steers,
Medium Frame No. 1, 410580 lbs.
50.25-52.50. Heifers, few Medium
Frame No. 1, 320510 lbs. 41.75-
45.00; Bulls, few Medium Frame
No. 1,530750 lbs. 41.2044.25.
CALVES: 171. Choice -78.00
89.00; Good 66.0078.00; Standard
50.0064.00; Standard & Good HO
125 lbs. 58.0068.00; 90110 lbs. 42.00
58.00; 65-85 lbs. 30.0044.00; Utility
5090 lbs. 20.0030.00.
FARM CALVES: Hoi. Bulls 95-
130 lbs. 55.0080.00; Hoi. Heifers 90
135 lbs. 60.0094.00; Beef cross
Bulls & Heifers 70110 lbs. 53.00
70.00.
HOGS: 63. few US No. 1-2 210-240
lbs. 44.25-45.00; No. 1-3 200-245 lbs.
42.50- few No. 2-3 220-265 lbs.
41.50- one lot No. 1-3 178 lbs.
at 37.75; Sows few US No. 1-3 330-
520 lbs. 39.50-42.00; one No. 2-3 725
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BUILT BY:
Is backflushin g for everybody?
By Robert K. Peters
Assistant Professor
Department of Dairy Science
University of Md.
COLLEGE PARK, Md. - Dairy
farmers are well aware of the tact
that mastitis can not be
eradicated. Thus, we are left with
the option ot controlling the spread
ot the disease.
Two recommendations that have
long been made to help prevent
bacterial transfer from infected to
non-mfected cows at milking are:
segregate infected and non
mfected cows and milk the infected
cows last; and sanitize the teat
cups and liners between cows.
Neither of these practices have
been adopted to any extent by
dairymen.
More recently some milking
equipment companies have in
troduced an automated system of
sanitizing milking units between
cows. This is accomplished by
moving water, sanitizer and air
backwards through the milking
lbs at 37.00. Couple Boars 31.75 &
35.00.
FEEDER PIGS: 11. One lot US
No. 1-3 25 lbs. at 12.50 per head.
SHEEP: 8. One lot Choice 92 lbs.
at 56.00.
For All Your
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unit to flush the hose, claw and
liners. Thus, the term “back
flushing” has been corned to
describe the automated sanitizing
operation.
Backflush systems generally
have several steps in each cycle:
Prerinse with potable water to
flush residual milk out of the unit.
Flush with sanitizer.
✓ Short delay period for the
sanitizer to kill bacteria on the
liners.
Postnnse with potable water.
Air, either under pressure of
vacuum to dry the liners, claw and
hose.
Approximately one to two quarts
of water are flushed through each
unit per cow per milking. The
sanitation cycle from start to finish
is about one minute.
It has been demonstrated that
automatic backflush systems
using 25 parts per million iodine as
the flush solution and air drying
decrease bacterial population on
liners by 99 percent.
This means that the interior of
the milking machine will be
essentially free of mastitis-causing
organisms and hence, the spread
of organisms from infected to non
mfected cows via the teat cup
liners should be prevented.
Yet a study with the appropriate
controls which documents that
backtlushmg prevents new udder
infections remains to be con
ducted.
Nevertheless, California ex
tension specialists have observed
that backflushmg milker units
between cows has proven suc
cessful in reducing mastitis in
large dairy herds with mastitis
problems.
The mastitis causing organisms
which are reduced or eliminated
from the liner surfaces are those
shed in milk from infected cows m
sufficient numbers to infect other
cows. These include the contagious
types of orgamsms-Streptococcus
agalactrae, Staphylocooccus
aureus and mycoplasma. Although
mastitis control programs based
on teat dipping and dry cow
therapy have little effect on
mycoplasma and coliform
mastitis, such a program is usually
Lancaster Farming, Saturday, December 5,19H—A15
highly effective m controlling
staphylococcal and streptococcal
mastitis.
Since staph and strep mastitis
account for 90-95 percent of the
mastitis, teat dipping and dry cow
therapy remains a logical and
economical approach to mastitis
control.
The justification for installing
backflush should be based on the
severity of the mastitis m the herd,
since backflush systems cost $BOO
to $1,500 per unit.
Severity of mastitis can be
measured by the somatic cell
count in bulk milk. The most
recent information on somatic
cells from dairy scientists at VPI
indicates a cell count of 50,000 to
100,000 cells per millimeter of
optimal for maximum milk
■ production.
Thus, larger herds that have
been unable to maintain low
somatic cell counts with teat
dipping and dry cow therapy may
find backflushing an attractive tool
for their mastitis control program.
Dairy farmers considering
backflush systems should visit
dairies that have installed a
system and observe its operation
during milking to learn more about
it The cost and potential benefits
of the system must then be
weighed.
As more information becomes
available on the efficacy of
preventing new infections and
when the cost decreases,
producers will probably accept
automatic backflushmg to a much
greater extent than the older
recommendations of segregating
cows and manually sanitizing
units.