Enzootic Pneumonia
The approximate relationship between lung damage/scoring system
at slaughter at 95 kg and daily liveweight gain and food conversion
ratio
|
|
Lung Lesion |
DLW Reduction |
FCR increase |
||
|
|
|
% |
gr./day |
% |
Value |
|
|
0/55 NEGATIVE |
0 |
0 |
0 |
0 |
|
|
2/55 MILD |
-4 |
-25 |
0 |
0 |
|
|
10/55 MILD |
-7 |
-50 |
+5 |
0.15 |
|
|
15/55 MODERATE |
-11 |
-80 |
+8 |
0.25 |
|
|
20/55 MODERATE |
-15 |
-100 |
+11 |
0.35 |
|
|
30/55 SEVERE |
-20 |
-130 |
+14 |
0.40 |
|
|
55/55 SEVERE |
-22 |
-560 |
+17 |
0.50 |
The estimates of reduction in DLW and FCR is based on Straw
1989 using pigs with 700g/day over the finishing period and a FCR of 3.
The lungs are shown from the front, with the intermediate
lobe superimposed for completeness