Draminski Mastitis, Руководство пользователя

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3. It is vital to note the differences between individual quarters
of the same dairy cow.
Example 1:
FR FL HR HL
340 330 260 330
Example 2:
FR FL HR HL
390 380 330 390
HR quarter - a threat of subclinical mastitis
In both instances regular monitoring is recommended.
4.
Among young milk cows (1-2 lactations) the most common
readings approach the vicinity of 400 units (ex. 2).
5.
Older cows (e.g. 9 years or older) physiologically have
increased levels of salt and somatic cell count in their milk and
can typically result in readings of around 290 units even though
they are healthy. It is important with such older cows to measure
milk from all four quarters - if three quarters should measure 290
units and one 250 units, then there is a risk of infection in the
lower reading quarter.
6.
Milk-fat content has an effect on the magnitude of readings .
Fatty milk gives above average readings.
7.
Illnesses other than mastitis, pharmaceutical procedures
as well as heat
may influence readings. The recommended
interpretations given in the instruction manual are not applicable
in such cases.
8.
Dirty, fat-coated electrodes negatively influence readings.
The first step to take when higher than normal results occur, is to
thoroughly clean the electrodes of any fat.
9.
Cows with visible clinical mastitis will generally return to a
reading above 300 units because of the essential changes
occurring in severely infected milk.
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10. Although frequent measurements increase reliability of the
test , it is sufficient for large herds to be examined at established
intervals. The data obtained from these measurements provide
the basis for selecting the infection-threatened cows, which
should be thoroughly investigated.
11.
In herds where a large number of cows have milk samples
below 300 units a mechanical check of the milking machine by a
machinery specialist is desirable, as wide-spread lower readings
throughout the herd can indicate over-milking of cows or acidosis
is occurring.
12.
Although there is the correlation between somatic cell count
and the Mastitis Detector's readings, the Detector cannot be used
for somatic cells counting.
The somatic cell count of milk is an insufficient diagnostic tool for
determining mastitis. Udder health disorders may be present even
with a low somatic cell count. There are microbes such as
nonhaemolytic Staphylococci, which cause only minimal increases
in the somatic cell count and as they multiply they cause
inflammation of the udder.
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