D 6—Lancaster Farming, Saturday, Novtmber 15,1980
Maryland has new
to fight mastitis
COLLEGE PARK, Md. -
Mastitis is the most costly
disease in the dairy industry.
The National Mastitis
Council estimates the
economic loss is $2 billion
yearly. Maryland alone loses
|23.5 million per year
The largest cost to the
dairyman is in lost milk
production, says Robert R.
Peters, extension dairyman
at the University of
Maryland. He estimates that
10 to 15 percent of production
potential is never achieved
because of subchmcal
mastitis This type of
mastitis accounts for over 90
percent of mastitis cases.
Subcluiical mastitis is
practically impossible to
diagnose without testing the
cow’s milk. The milk and
udder of infected cows ap
pear normal; therefore,
dairymen assume these
cows are healthy and
producing at their highest.
The National Mastitis
Council estimates that 40 to
50 percent of the cows in a
typical herd are infected
with mastitis. The average
cow with subclinical mastitis
produces 12.5 percent less
milk, a |294 loss per infected
cow (using current milk
prices of |13.05/cwt* and
average milk production of
15,000 Ib/cow/year). In a 40
cow herd, for example, the
dairyman loses >5,292 per
year without realizing it.
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H SYCAMORE IND PARK
255 PLANE TREE DRIVE V\ \ SystetTO /y/
UNCASTER, PA 17603
HEY EQUIPMENT (717)393-5807
COMPANY, INC. Route 30 West At
i The Centerville Exit
Maryland Dairy Herd
Improvement Corporation
now offers a new option to
assist dairymen in
managing udder health. The
somatic cell count program,
Peters says, is designed to
initially established the
extent of mastitis infections
in a herd and later to serve
as a constant monitor ,oi
each cow’s udder health.
The program costs 12
cents per sample per month
and has been operating in
Maryland since October 1. A
herd with 40 cows would pay
$19.20 per month to use the
SCC program. This is a
small amount when com
pared with the $5,292 losses
from subchmcal mastitis,
Peters says.
- The SCC measures the
number of body cells found
in milk from individual
cows. The two major types of
somatic (body) cells found in
milk are epithelial cells
(sloughed secretory cells
from the mammary gland)
and leucocytes derived from
blood. Leucocytes are
present in milk to help the
mammary gland fight
against mastitis or other
infection.
Normal milk contains less
than 300,000 somatic cells
per nuliliter. If the udder is
injured or infected, the
somatic cell count increases
dramatically.
A high SCC would indicate
failure Many combinations of safety
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Optional equipment . . like special
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When you need reliability in a Standby
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Generator Set people . . . contact
Katolight Corporation.
tool
that a problem has
developed in the herd
management. However, a
particular SCC value will not
identify the mastitis
problem
Peters recommends the
following for a sound
mastitis control program:
Proper installation, use
and maintenance of milking
equipment and at least an
annual inspection by a
qualified person.
Proper milking
procedures including teat
dipping with an effective
teat dip.
Treating all quarters of all
cows at drying off with an
effective dry cow product
based on bacterial sen
sitivity and culture results
Good sanitation in the
housing area of lactatmg and
dry cows and also in the
maternity area
Culling any cow with a
SCC of 1,000,000 or more
throughout lactation if she
does not respond to treat
ment.
Conducting a thorough
check for subchmcal
mastitis before purchasing
lactatmg cows.
Housing replacement
heifers in individual pens or
trying them during milk
feeding to prevent the
spread of mastitis-causing
organisms to the immature
mammary gland of the
suckled heifer.
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