Table 9 Calving Report 01/09/97–31/08/98.
From: What are Production Diseases, and How do We Manage Them?
Calving traits | Primiparous cows | Multiparous cows | ||
|---|---|---|---|---|
a. n Calvings | 100.0 | Â | 207.0 | Â |
b. % twins | *1.0 | (0.7) | *7.3 | (5.9) |
c. % stillbirth | *5.7 | (5.6) | *6.8 | (5.1) |
d. % milk fever | 0.0 | (0.0) | *2.8 | (2.0) |
e. % prolapsed uterus | *1.0 | (0.7) | 0.5 | (0.7) |
f. % displaced abomasum | 0.0 | (1.0) | (1.0) | (1.5) |
g. % retained placenta | *18.3 | (13.3) | *25.7 | (13.1) |
h. % primary metritis | *30.8 | (25.0) | 16.6 | (16.6) |
I. % ketosis | *4.2 | (1.5) | *21.0 | (6.0) |
j. % calved with mastitis | 0.0 | (1.0) | 2.2 | (5.0) |
k. % daydry >70 d | Â | Â | *23.0 | (15.0) |
l. % daydry <60 d | Â | Â | 13.5 | (15.0) |
m. % induced calving | *18.3 | (10.0) | 0.6 | (2.0) |
n. % calved with edema | *21.2 | (10.0) | 1.7 | (5.0) |
o. BCS at calving (n examined) | 103.0 | Â | 174.0 | Â |
   1. % with body score ≥ 4.25 | 7.8 | (15.0) | 5.2 | (15.0) |
   2. % with body score ≤ 3.00 | *33.0 | (15.0) | *46.0 | (15.0) |
p. BCS changes in dry period (n examined) | Â | Â | 151.0 | Â |
   1. % lost ≥ 0.5 units |  |  | *24.5 | (15.0) |
   2. % gained ≥ 0.25 units |  |  | 27.8 |  |