Delvotest® SP-NT is an AOAC certified, broad-spectrum test that detects over 65 antibiotics with a fixed incubation time of 3 hours. Increasingly, farmers use Delvotest® SP-NT routinely after treatment to ensure milk is safe, before returning it to the tank. Testing all post-treatment cows, and securing a clear result before resubmitting milk for sale, remains the best safeguard available to ensure the integrity of your milk. However, if you need to test your bulk tank regularly, use Delvotest® T
Benefits
- Ideal sensitivity for testing individual cows.
- Broad-spectrum: detects all 6 antibiotic groups.
- Inexpensive.
- The gold standard of antibiotic tests, used by NML and UK milk buyers.
- By far the most widely used antibiotics test by UK dairy farmers.
- Ensures milk is clear before returning to the bulk tank.
Others use Delvotest® SP-NT when:
- Post-calving, after dry cow therapy.
- Where cows calve earlier than expected.
- After ‘Off-label use: when a standard antibiotic dose rate has been increased or when treatments are combined.
- If treatment records are lost or confused.
- ‘Batch testing' cows to identify the source of an ‘unknown' tank failure.
Antibiotic products commonly used on UK dairy farms: showing test sensitivities to those ingredients
Antibiotic Group |
Antibiotic |
Examples of branded products containing the antibiotic ingredient alone or in combination. |
MRL (EU) (Unit: ppb) |
Delvotest® SP-NT (Unit: ppb) |
Beta-lactams |
Penicillins |
|
Plates |
Ampoules |
Amoxicillin |
Duphamox LA; Synulox |
4 |
3 |
2 |
Ampicillin |
Duphacillin |
4 |
2 |
2 |
Penicillin G |
Duphapen; TetraDelta; Ubro Red DC |
4 |
2 |
2 |
Cloxacillin |
Kloxerate, Orbanin |
30 |
12 |
12 |
Cephalosporins |
Cefalexin |
Ubrolexin |
100 |
45 |
45 |
Cefalonium |
Cepravin DC |
20 |
10 |
10 |
Cephapirin |
Mastiplan; Metricure |
60 |
2 |
2 |
Ceftiofur |
Exenel (if used as directed, nil milk withdrawal) |
100 |
20 |
20 |
Cefoperazone |
Pathocef |
50 |
30 |
30 |
Cefquinome |
Cephaguard; Cobactan MC |
20 |
75 |
65 |
Tetracyclines |
Oxytetracycline |
Engemycin LA; Terrramycin LA |
100 |
250 |
300 |
Tetracycline |
|
100 |
270 |
300 |
Sulfonamides |
Sulfadiazine |
Duphatrim IS; Norodine 24; Lactatrim MC |
100 |
50 |
65 |
Macrolides |
Tylosin |
Tylan 200 |
50 |
40 |
35 |
Tilmicosin |
Mycotil |
50 |
30 |
30 |
Aminoglycosides |
Kanamycin |
Ubrolexin |
150 |
1700 |
1700 |
Neomycin |
Multiject IMM; TetraDelta |
1500 |
190 |
115 |
DH Streptomycin |
TetraDelta; |
200 |
700 |
700 |
Framycetin Sulp |
Ubro Red DC; Ubro Yellow MC; |
1500 |
120 |
120 |
Other |
Trimethoprim |
Norodine , Lactatrim MC |
50 |
160 |
160 |
Last updated October 2019
Note: 1. All readings at control times
Note: 2. A number of products contain more than one antibiotic ingredient and test sensitivities to each ingredient may differ considerably. However, as long as the test being used is sensitive to at least one ingredient, the product will be detected.