Kiserian Abbatoir Meat Inspection Data Analysis
National Executive Summary
This report analyses meat inspection data collected by veterinary officers at licensed abattoirs across Kenya. The dataset comprises 304 records spanning 11 counties, 15 named abattoirs, and 6 species groups. Data covers ante-mortem inspection (animals presented for slaughter) and post-mortem inspection (carcass and organ condemnation).
Here are some of the few points gathered from prior analysis:
Data completeness is the primary surveillance risk. 68.8% of records carry a valid reporting date, meaning 31.2% of national slaughter activity cannot be placed in time. Every month with a missing record is unmonitored meat entering the food chain.
The national carcass condemnation rate is 0.27%. Across 1,290,987 slaughtered animals, 3,440 carcasses were condemned as unfit for human consumption. This rate is not uniformly distributed ie. specific counties and abattoirs account for a disproportionate burden.
2.63% of inspection records flagged C. bovis (beef tapeworm). This is a direct zoonotic risk: Taenia saginata larvae in beef infect humans. Geographic hotspots are identifiable and actionable.
1 Data Overview and Quality Assessment
1.1 Background and Dataset Scope
This report analyses the consolidated dataset comprising 304 records across 11 counties and 15 named abattoirs. The dominant species group is Cattle (42.4% of records). A total of 121,182 animals were presented for slaughter across the dataset period.
2 Kiserian Slaughterhouse (Pilot Site)
About this section. Kiserian Slaughterhouse (Kajiado County) is the primary pilot site for the meat inspection digitisation and food safety improvement programme. This section provides a detailed facility-level analysis covering data quality, throughput, ante-mortem findings, post-mortem condemnation, disease burden, and organ condemnation, to serve as the baseline against which future programme improvements will be measured.
The Kiserian dataset comprises 77 records from Kajiado County. Of these, 54 records (70.1%) carry a valid reporting date ,meaning 29.9% of Kiserian’s slaughter activity is temporally unanchored. This poses a significant challenge for any time-series analysis or trend monitoring.
2.1 Statistical Caution: Baseline Validity
Before presenting Kiserian-specific metrics, it is important to establish the statistical reliability of findings based on 77 records, of which only 54 are dated.
Warning
Baseline validity. With 77 total records and 54 dated records, the statistics below should be treated as indicative baseline estimates, not definitive performance measurements. The 95% confidence interval on Kiserian’s condemnation rate of 0.03% spans 0.01% to 0.13%.
2.2 Data Quality at Kiserian
2.3 Throughput Overview
Data confidence: total_presented, carcasses_condemned, total_condemned (100%); slaughtered_approved, number_dead, number_rejected (98.7–99.6%).
| Stage | Metric | Value |
|---|---|---|
| Ante-mortem | Total animals presented | 5,798 |
| Mean mortality rate (%) | 1.44% | |
| Mean rejection rate (%) | 1.44% | |
| General | Inspection records | 77 |
| Slaughtered and approved | 5,755 | |
| Dead before slaughter | 5 | |
| Rejected at ante-mortem | 5 | |
| Isolated (suspect) | 6 | |
| Post-mortem | Carcasses fully condemned | 2 |
| Full condemnation rate (%) | 0.03% | |
| Events with partial condemnation (%) | 7.79% |
Kiserian’s full condemnation rate stands at 0.03% (95% CI: 0.01%–0.13%). The mean ante-mortem mortality rate of 1.44% is the most concerning single metric at this facility. The national mean mortality rate is 2.22% — Kiserian’s rate warrants investigation of transport conditions and lairage management.
2.3.1 Aggregated by Species and Month
| Species | Month | Presented | Slaughtered | Condemned | Dead | Rejected | Condemn % | Mortality % | Rejection % |
|---|---|---|---|---|---|---|---|---|---|
| Cattle | 2026-05-01 | 9 | 17 | 1 | 1 | 1 | 5.88% | 50% | 50% |
| 2026-06-01 | 528 | 527 | 0 | 1 | 1 | 0% | 0.37% | 0.37% | |
| 2026-07-01 | 77 | 77 | 0 | 0 | 0 | 0% | 0% | 0% | |
| Missing Dates | 221 | 203 | 0 | 0 | 0 | 0% | 0% | 0% | |
| Goat | 2026-05-01 | 190 | 210 | 0 | 0 | 0 | 0% | 0% | 0% |
| 2026-06-01 | 1,971 | 1,982 | 0 | 1 | 1 | 0% | 0.06% | 0.06% | |
| 2026-07-01 | 505 | 505 | 0 | 0 | 0 | 0% | 0% | 0% | |
| Missing Dates | 770 | 770 | 0 | 0 | 0 | 0% | 0% | 0% | |
| Sheep | 2026-06-01 | 835 | 813 | 0 | 1 | 1 | 0% | 0.17% | 0.17% |
| 2026-07-01 | 107 | 107 | 0 | 0 | 0 | 0% | 0% | 0% | |
| Missing Dates | 585 | 544 | 1 | 1 | 1 | 0.18% | 0.19% | 0.19% |
2.4 Ante-Mortem Benchmark
| Metric | Kiserian | National mean | National Q1 (best 25%) | National Q3 (worst 25%) | N facilities in benchmark |
|---|---|---|---|---|---|
| Mortality rate (%) | 1.44 | 0.25 | 0 | 0.02 | 6 |
| Rejection rate (%) | 1.44 | 12.54 | 0 | 14.78 | 6 |
| Note: | |||||
| Benchmark based on 6 abattoirs with 5+ records nationally. Q1 = best-performing quartile; Q3 = worst-performing quartile. |
Kiserian’s mortality rate of 1.44% is benchmarked against 6 abattoirs nationally with five or more records. The national Q3 threshold (worst-performing 25% of facilities) is 0.02%.
2.5 Condemnation Rate Over Time
Based on 54% dated records (70.1%of Kiserian total). 29.9% of Kiserian records have no date and cannot be placed in this timeline.
2.5.1 Organ Condemnation at Kiserian
Data confidence: MODERATE liver condemned counts are ~47% complete nationally; lung ~37%. The analysis below is valid but represents a subset of Kiserian records. The
organs_condemned_flag(88% complete) andtotal_organs_condemned(88% complete) provide the higher-confidence headline numbers.
| Organ field | Completeness at Kiserian (%) | Status |
|---|---|---|
| Liver Condemned N | 66.2 | Partial |
| Lung Condemned N | 40.3 | Partial |
| Heart Condemned N | 1.3 | Unreliable |
| Total Organs Condemned | 100.0 | Usable |
| Organs Condemned Flag | 100.0 | Usable |
2.6 Disease Flag Profile : Kiserian vs National
Data confidence:(100% complete). All binary disease flags are fully populated.
2.6.1 Species Breakdown
2.6.2 Sex Composition and Pregnant Female Flags
2.7 C. bovis at Kiserian
C. bovis at Kiserian: C. bovis was detected in 0% of Kiserian inspection records, compared with a national average of 2.63%.
Cysticercus bovis is the larval stage of Taenia saginata, a tapeworm infecting humans through consumption of undercooked beef containing viable cysts. Every positive detection constitutes a direct public health event requiring notification. Recommended actions where Kiserian’s rate is above the national average:
- Trace the source farms from the
source_of_animalsfield and schedule inspections - Consider a targeted deworming and sanitation programme for source herds
3 Keekonyokie Slaughterhouse
Keekonyokie Slaughterhouse, also located in Kajiado County, provides a useful comparison point for the Kiserian pilot. The facility contributes 26 inspection records, of which 92.3% carry a valid reporting date. Keekonyokie’s full carcass condemnation rate stands at 0%, compared with Kiserian’s 0.03% and the national average of 0.27%.
Ante-mortem performance shows a mean mortality rate of 0% and a mean rejection rate of 0% at Keekonyokie, against Kiserian’s 1.44% and 1.44% respectively. C. bovis was detected in 0% of Keekonyokie records, compared with 0% at Kiserian and a national average of 2.63%. These figures are presented here as a contextual benchmark only, not a full facility audit.
4 Conclusion
The Kiserian pilot confirms both the promise and the current limits of the digitisation programme. On performance, Kiserian’s carcass condemnation rate of 0.03% (95% CI 0.01%–0.13%) and its C. bovis detection rate of 0% sit close enough to national figures (0.27% and 2.63% respectively) that they can be treated as a credible baseline, while the county-wide map above shows Kiserian is not an outlier facility within Kajiado, which is a useful reassurance for the Director.
On data quality, the binding constraint remains reporting-date completeness: only 70.1% of Kiserian records are dated, which limits every trend chart in this report to a partial and possibly non-representative slice of activity.