Table 2.
Presence of surface contamination in the DWS of broiler farms
| Broiler Farm | Microbiological analysis | Chemical analysis | Presumable biofilms (%) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| n | Enumerations (log CFU/20cm2) | n | Proteins | Carbohydrates | Uronic acids | ||||||
| TAC | PSEUDO | % a | Quantity (μg/20cm2) | % | Quantity (μg/20cm2) | % | Quantity (μg/20cm2) | ||||
| K1 | 8 | 5.53–5.70 – 6.17 | 4.48–4.89 – 5.26 | 8 | 25 | 15.70, 22.40 a | 0 | / b | 0 | / | 25 |
| 15 | 7.19 ± 1.08 | 6.61 ± 1.12 | 0 | ||||||||
| K2 | 6 | 6.28–6.35 – 7.24 | 5.08–6.29 – 7.42 | 6 | 83 | 14.00–15.85 – 16.80 | 17 | 139.44 c | 0 | / | 83 |
| K3 | 12 | 4.27 ± 0.64 | 3.36–3.95 – 4.38 | 12 | 75 | 7.10–16.95 – 19.05 | 17 | 59.63, 60.71 d | 17 | 28.40, 43.20 d | 83 |
| 12 | 6.03–6.97 – 7.63 | 5.32–6.17 – 6.80 | 0 | ||||||||
| K4 | 8 | 3.09–4.55 – 4.68 | 1.92–3.19 – 4.19 | 8 | 75 | 5.90–18.40 – 26.85 | 12 | 64.32 c | 0 | / | 75 |
| K5 | 9 | 4.30–4.71 – 6.00 | 4.33 ± 0.72 | 9 | 33 | 0.00–0.00 – 16.80 | 22 | 62.52, 94.04 d | 0 | / | 44 |
| 15 | 7.13 ± 1.05 | 5.20–5.67 – 6.11 | 0 | ||||||||
The number of sampled points (n) together with the proportion of quantifiable samples for chemical analysis (%) and values for total aerobic count (TAC), Pseudomonas count (PSEUDO), proteins, carbohydrates and uronic acids are shown for each farm sampling. Mean and standard deviation are given for values that are normally distributed. First quartile (Q1), median (Q2, in bold) and third quartile (Q3) are given for values that did not follow this distribution. Sampling points where both TAC (≥ 2 log CFU/20cm2) and one or several chemical components were quantified (>LOQ) are evaluated as presumably carrying biofilm. a %, proportion of quantifiable (>LOQ) samples given in percentage; b /, Values below LOQ; c, Only one value obtained; d, Only two values obtained