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| Titel: |
Contamination of animal feedingstuffs with nicarbazin: investigations in a feed mill |
| Auteur: |
McEvoy, J. D. G. Smyth, W. G. Kennedy, D. G. |
| Verschenen in: |
Food additives and contaminants. Pt. A, Chemistry, analysis, control, exposure & risk assessment |
| Paginering: | Jaargang 20 (2003) nr. 2 pagina's 136-140 |
| Jaar: |
2003-02 |
| Inhoud: |
Some mechanisms of nicarbazin contamination were investigated in a feed mill. Three sequential 3-tonne batches of nicarbazin-free feed were produced directly after a batch of nicarbazin-containing feed (125 mg kg -1 ). Sampling of the nicarbazin-free feed took place at two points before pelleting and at one point post-pelleting. The study was repeated on two further occasions, i.e. three separate nicarbazin-containing feeds and 27 tonnes of «flushing αfeeds were manufactured and sampled in total. Pre-pelleting, the highest nicarbazin concentrations (3.4 ±0.26 mg kg -1 ) were observed in the first tonne milled after the nicarbazin containing ration. Thereafter, concentrations steadily declined in successive batches. Post-pelleting samples contained much higher concentrations of the drug. After 8 tonnes had passed through, the concentrations (7.2 ±1.29 mg kg -1 ) were between 10 and 20 times greater than the corresponding concentrations detected post-mixing. These concentrations are sufficient to cause violative residues in eggs and broiler liver. The practice of returning post-press sieved material to the pre-press bins was identified as the cause of the problem. Re-routing of sieved material along with better segregation of nicarbazin-containing and nicarbazin-free feedingstuffs markedly reduced the incidence of feed contamination with this compound. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 8 gevonden artikelen
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