Table 4 Drinking water analysis
From: Premature farrowing and stillbirths in two organic sow farms due to riboflavin deficiency
Exams | Methods | Unit of measurement | Results | Reference D.L. 31 02/2001 [22] |
|---|---|---|---|---|
Chimical parameters | ||||
Colour | Absent | Absent | ||
Odour | Absent | Absent | ||
PH | Potentiometric | 7.48 | 6.5–8.5 | |
Electrical conductivity | Potentiometric | µS/cm−1 | 543 | |
Dry residue | Gravimetric | 383 | < 1500 | |
Ammonia | Indophenol | mg/l | < 0.1 | < 0.5 |
Nitrite | Griess | mg/l | < 0.02 | < 0.1 |
Nitrate | Photometric | mg/l | 1.4 | < 50 |
Chloride | Mohr | mg/l | 11 | < 200 |
Fe2+ | Photometric | mg/l | 1.018 | < 0.2 |
Manganesium | Photometric | mg/l | 0.172 | < 0.05 |
Hardness | Eriochrome black titration | °F | 27.2 | 15–50 |
Alkalinity | Methyl orange titration | mg/l | 310 | |
Organic matter | Kubel | mg/l O2 | 0.6 | < 5.0 |
Phosphorus | Irsa | mg/l | < 0.3 | < 5.0 |
Turbidity | Turbidimeter | U.J | 2.5 | < 4.0 |
Bacteriological parameter | ||||
Total bacterial count | PCA inclusion | u.f.c./ml | 36 | |
Total coliform | Endo agar (microfiltration) | u.f.c./100 ml | Absent | Absent |
Escherichia coli | Endo agar (microfiltration) | u.f.c./100 ml | Absent | Absent |
Enterococcus spp. | Aesculin (microfiltration) | u.f.c./100 ml | Absent | Absent |