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DeLaval Herd Navigator™ precision analytics 100
General description
(A)
30
25
20
15
10
5
0
0
5
10
Fig. 12: Progesterone level during a prolonged post partum anoestrus (PPA).
A:
Progesterone (ng/ml)
B:
Days in milk (DIM)
© DeLaval 2021.
2021-05-10, Version 3
4.6 Progesterone and prolonged postpar-
15
20
25
30
C:
D:
24 (44)
tum anoestrus
35
40
45
PPA alarm (prolonged post partum anoes-
trus)
Calving
Prolonged anoestrus after calving (postpartum)
is a problem seen on cows that cannot mobilize
sufficient amounts of energy for milk production.
This cannot be considered as a disease but is
rather a symptom of suboptimal management
and nutrition, or pathological problems, such as
uterine and ovarian diseases. This prevents the
resumption of ovarian activity after calving. As a
consequence, the progesterone level remains
low.
(B)
50
55
60
(C)
(D)
2800008901
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