Health assessment from the slaughterhouse
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Transcript of Health assessment from the slaughterhouse
Health assessment from the
slaughterhouse
pneumonia•acute
• confluent with normal lung or swollen
• rounded edges to lobes
• soft, meaty texture
• moist exudate in airways
• swollen lobules• edema
• chronic• shrinkage of
affected portion
• sharp edges to lobes
• firm texture• dry• catarrhal
exudate• scarring
Straw, B., Backstrom, L. Leman, A. 1986. Evaluation of swine at slaughter, Part 1 - The mechanics of examination and epidemiologic considerations. Compendium of Continuing Education for Practicing Veterinarians. 8: 541-548
Burch, D. 1984. Tiamulin feed premix in the improvement of growth performance of pigs in herds severely affected with enzootic pneumonia. Veterinary Record. 112: 209-211
Scalding water aspiration-lung
From A Colour Atlas of Meat Inspection. J. Infante Gil, J. Costa Durao Wolfe Publishing Ltd 1990
Agonal aspiration of blood-lungFrom A Colour Atlas of Meat Inspection. J. Infante Gil, J. Costa Durao Wolfe Publishing Ltd 1990
Acute oedema-lung
From A Colour Atlas of Meat Inspection. J. Infante Gil, J. Costa Durao Wolfe Publishing Ltd 1990
Enzootic pneumonia-lungFrom A Colour Atlas of Meat Inspection. J. Infante Gil, J. Costa Durao Wolfe Publishing Ltd 1990
pleurisy
•Grade 1: The lobe of the lung
•Grade 2: Bonding between the lobe and the ribs
•Adoption of pleuropneumonia: not recorded as pleurisy, but classified as a lung score.
recording pleurisy together with pneumonia
•N1 = stick together between lobe, normal lung
•N2 = stick together between the lobe and the ribs, normal lung
•P1 = adjacent to the lobe, pneumonia lung
•P2 = stick together between the lobe and the ribs, lungs pneumonia
Pericarditis And peritonitis
Pleuropneumonia
•Viral bleeding, skin abscesses, abscesses
•The end of the lobe
Abscessation / arthritis
•Muscular lymph nodes, abdominal cavity, spinal cord, injection site.
From A Colour Atlas of Meat Inspection. J. Infante Gil, J. Costa Durao Wolfe Publishing Ltd 1990
From A Colour Atlas of Meat Inspection. J. Infante Gil, J. Costa Durao Wolfe Publishing Ltd 1990
Ascariasis
•Grade 1: milkspot <10
•Grade 2: Milkspot> = 1
•Or maybe save: yes or no
From A Colour Atlas of Meat Inspection. J. Infante Gil, J. Costa Durao Wolfe Publishing Ltd 1990
Sarcoptic mange
•Grade 1: The papule is located only at the papule 2-5 mm diameter behind the ear or abdomen and thigh: specificity 78%
•Grade 2: Wide distribution: specificity> 98%
•Grade 3: Wide distribution and density: specificity> 98%
sarcoptic mange
Grade 1Pointon, A., Dial, G. 1990. Swine Slaughter-check Procedures Manual. Developed through collaboration of the National Animal Health Monitoring System and University of Minnesota Swine Group
.
sarcoptic mange
Grade 2
Pointon, A., Dial, G. 1990. Swine
Slaughter-check Procedures
Manual. Developed through collaboration of the National Animal Health Monitoring System and University of Minnesota S
wine Group.
sarcoptic mange
Grade 3
Pointon, A., Dial, G. 1990. Swine Slaughter-check Procedures Manual. Developed through collaboration of the National Animal Health Monitoring System and University of Minnesota Swin
e Group.
Pointon, A., Dial, G. 1990. Swine Slaughter-check Procedures Manual. Developed through collaboration of the National Animal Health Monitoring System and University of Minnesota Swine Group.
Ileitis
•the end ileum•proliferative enteropathy (PE)
proliferative intestinal adenomatosis (PIA)
Atrophic rhinitis
•Grade 0: Normal full-nose turbinate septum symmetric and upright.
•Grade 1: Anatomy Slightly absent from atrophy
•Grade 2: mild to severe atrophy There is a gap of 6 mm in only the lower degeneration occurs. scroll There are a few ways. septum Slight
•Grade 3: Moderate changes. Moderate septum defect with 7 mm gap. Degeneration at moderate ventric scroll.
•Grade 4: Moderate to Severe Changes There is a septum defect between the middle of the ventricle with a gap> 8 mm ventric scroll disappears. Moderate degeneration occurs. Severe fibrous ventral scroll.
•Grade 5: Severe changes with ventral turbinate loss on either side. Degenerate dorsal turbine septum may be severe or may be present.
Atrophic rhinitis
Pointon, A., Dial, G. 1990. Swine Slaughter-check Procedures Manual. Developed through collaboration of the National Animal Health Monitoring System and University of Minnesota Swine Group.
Nephritis
•Grade 1: White to gray spots 2-5 mm in diameter at the cortex surface. No scar and / or hypertrophy.
•Grade 2: Expanded Vision Found a grayish tinge. cortex have hypertrophy And possibly appearance capsule Stick with cortex Stripping out hard
Subacute interstitial nephritis-kidney
From A Colour Atlas of Meat Inspection. J. Infante Gil, J. Costa Durao Wolfe Publishing Ltd 1990
Chronic interstitial nephritis-kidneyFrom A Colour Atlas of Meat Inspection. J. Infante Gil, J. Costa Durao Wolfe Publishing Ltd 1990
Esophogastric ulcer
•Grade 0: Normal skin throughout the esophagus
•Grade 1: The hyperkeratinisation of the squamous area is usually paler and yellow.
•Grade 2: epithelium stripping, especially at the squamous-glandular junction
•Grade 3: There are active pit ulcers and cicatrisation of esophogastric orifice
The time that pigs are infected before the
slaughterhouse is also visible.
4-6 weeksIleitis: proliferative enteropathy
10-12 weeksPleuropneumonia
4-5 monthsAtrophic rhinitis
6-12 weeksModerate/severe-reinfestation
3 weeksMild-first exposure
Ascarid liver lesions:
8-12 weeksPleurisy
8-16 Enzootic pneumonia
Duration of infection before
the slaughterhouse.
Condition
state gold standard(Prev
.)
Specificit
y
Fast Predictive value
positive
negative
Pneumonia
69% 73% 85% 88% 69%
Pleurisy
33% 97% 81% 93% 91%
Pericarditis
33% 94%%
63%%
83% 84%
Pleuropneumonia
14% 100%
86% 100%
98%
ascariasis
41% 86% 70% 78% 81%
Frequency of inspection
•3-4 times a year•Arranged by the herd size
Sample size
•To find disease (table)•To find out the prevalence of
the disease (table)
Allowable error
5% 7.5% 10% 12.5% 15%
90% agreement
95% CL
138 61 35 22 15
90% CL
97 43 24 16 11
60% agreement
95% CL
369 164 92 59 41
90% CL
260 115 65 42 29
Pointon, A., Dial, G. 1990. Swine Slaughter-check Procedures Manual. Developed through collaboration of the National Animal Health Monitoring System and University of Minnesota Swine Group.
Pointon, A., Dial, G. 1990. Swine Slaughter-check Procedures Manual. Developed through collaboration of the National Animal Health Monitoring System and University of Minnesota Swine Group.
Pointon, A., Dial, G. 1990. Swine Slaughter-check Procedures Manual. Developed through collaboration of the National Animal Health Monitoring System and University of Minnesota Swine Group.
Sample form swine slaughter surveillance progr
am
Swine Slaughter Surveillance ProgramOwner: …………………………………… Plant ………………………………………..Date ………………………………….Farm number ……………………………. Lot number ………………………………..Inspector ……………………………. No. Submitted ……………………
1X no. Mange Condem Peritonitis Pleuritis Pericarditi Pleuropne White spot Ileitis Atrophic Enzootic pneumonia other0-3 +/- +/- N1-P2 +/- +/- 1-2 +/- 0-5 Neg. Chronic Active
12345678910111213141516171819202122232425
0 ………….1 …………..2 …………..3 …………..
(AMS ………..)tot ……………
Ds. …….Contam. ………….
Total cond…………..
Pos ……….Neg ……….
Tot …………
0 …………1 …………2 …………W/pn …….W/o ……...Pos ……...Neg ……..Tot ………
Pos ……...Neg ……
Tot ………
Pos ……...Neg ……
Tot ………
1 ..……...2 …..……
Tot ………
Pos ……...Neg ……
Tot ………
Neg ………1 ………….2 ………….3 …………..4 …………..5 …….……(ARS ……..)tot …………
0 ……………. chronic …………..1-10 ……….. active …………….11-20 ……… neg ………………21-30 ……… (ALS) …………….31-40 ……….>40 ………….
Tot ………….. tot …………..Tot = the total number evaluated for that column, which will include both positives and negatives. This number should be the same for pneumonia, pleuritis, pericarditis, pleuropn. And whitespot. Please fill in all blanks in the summary section to ensure consistency. Tot for ileitis – tot pn. – tot condemned for disease. Total for peritonitis = total for pneumonia + no. condemned forcontamination. Other: U-ulcer (0-3), E-erysipelas, N-nephritis (0-2), SF-sore feet (0-3), LW-lung worm, A-arthritis, TB-tuberculosis, KW-kidney worm, T-tail bitten, AB-abscessation