| HISTORY
The farm, a 750 SL level farrow to finish operation, is performing normally. However it is PRRS sero positive but is in stable condition. The farm is mass vaccinating the breeders with a killed European serotype vaccine. However due to the fear of PRRS outbreak raging in Luzon, they decided to vaccinate with a live vaccine. Vaccination started of the last week of October 2007.
Then on Dec. 21, 2007, a sudden outbreak of red ear disease hit the nursery of the farm. Mortality shoots up in 2 months old piglets.
The pigs are not responding to medication. Hog cholera vaccination did not control the situation.
They did necropsy and serology tests to find the culprit. They tested the feeds and water for contamination. Tissue sample was taken to a neighboring country for PCR test.
Then on February 2008, we started vaccinating the herd with a killed Polyvalent PRRS vaccine.
|
Dec 07 |
Jan 08 |
Feb 08 |
Mar 08 |
Apr 08 |
May 08 |
June 08 |
July 08 |
Aug 08 |
Sept 08 |
Farr Rate |
77.61 |
70.99 |
84.21 |
87.33 |
85.28 |
88.28 |
87.35 |
87.98 |
82.21 |
78.44 |
Ave LS |
9.47 |
10.39 |
10.33 |
10.35 |
10.24 |
9.77 |
9.70 |
9.68 |
9.56 |
9.76 |
MM |
5.7 |
2.3 |
1.8 |
2.6 |
1.97 |
1.3 |
1.7 |
1.1 |
2.8 |
2.3 |
SB |
3.2 |
2.9 |
3.9 |
3.6 |
4.0 |
2.7 |
3.9 |
2.8 |
2.7 |
1.9 |
CB |
5.2 |
5.2 |
6.1 |
7.1 |
6.2 |
5.4 |
6.1 |
9.1 |
4.8 |
4.7 |
Ave Wean Wt |
7.6 |
8.0 |
7.2 |
7.7 |
7.2 |
7.1 |
7.4 |
7.3 |
7.9 |
7.8 |
|
MORTALITY |
Suckling |
6.8 |
4.0 |
4.2 |
6.1 |
5.4 |
5.1 |
6.2 |
7.8 |
4.3 |
4.3 |
Weanling |
3.8 |
4.2 |
3.5 |
5.1 |
1.5 |
1.3 |
1.2 |
1.1 |
1.8 |
0.6 |
Starter |
5.7 |
35.3 |
25.7 |
15.2 |
20.6 |
20.9 |
10.0 |
13.7 |
13.1 |
3.5 |
Grower |
2.6 |
9.1 |
5.5 |
3.3 |
3.0 |
3.4 |
4.3 |
2.9 |
0.9 |
0.9 |
Total |
19.0 |
52.8 |
39.0 |
29.8 |
30.6 |
30.9 |
21.8 |
25.6 |
20.3 |
9.5 |
|
Sow Level |
683 |
719 |
743 |
739 |
746 |
748 |
736 |
714 |
720 |
695 |
Total Pop |
6165 |
4715 |
5232 |
5957 |
6320 |
6554 |
6889 |
6986 |
6885 |
6753 |
Runts Sold |
431 |
198 |
262 |
105 |
230 |
244 |
89 |
89 |
74 |
65 |
VACCINATION:
Sows/Gilts - 6 wks before farrow
3 wks before farrow
6 wks after farrow
Boars - one shot then booster of 3 wks later
CONCLUSION:
Killed polyvalent PRRS vaccine can stabilize a farm hit by atypical PRRS strain and make it profitable again.
|
