The effect of ammonium ferric hexacyanoferrate on reducing radiocaesium transfer from grass silage to sheep

Abstract

A study was carried out to examine the effect of ammonium ferric hexacyanoferrate (AFCF) on the transfer of radiocaesium from grass silage to the tissues of male lambs. During ensiling, a formic acid based additive and AFCF were sprayed on grass contaminated with 134Cs and the mixture was allowed to incubate for 45 days. A dose of 21 mg AFCF d-1, fed to sheep offered contaminated silage for fourteen days, reduced 134Cs transfer to muscle by 45% compared to that of control sheep. An equivalent dose of AFCF administered in a capsule reduced transfer by only 3%. In another experiment, AFCF intake of 50, 100 and 150 mg d-1 for ten days reduced 134Cs transfer to sheep muscle by 75, 82 and 86%, respectively. In control lambs, of average live weight 38 and 47 kg, the feed to muscle 134Cs transfer coefficient averaged 0.15 d kg-1, but equilibrium between tissue and feed 134Cs had probably not been reached due to the short feeding period. Increasing doses of AFCF from 0 to 150 mg d-1 increased the faecal/urinary 134Cs ratio from 2 to 42.;

AFCF and clinoptilolite use in reduction of 137Cs deposition in several days' contaminated broiler chicks

“…The best cesium binding effects were recorded for AFCF cesium binder, which confirmed the earlier findings by Arnaud et al (1988), Hove and Ekern (1988), Hansen et al (1996) and Paasikallio et al (2000). This cesium binder incorporated in the feed (group 3) after 3 days of contamination reduced 137 Cs deposition in the breast meat by 68%, in liver by 81% and in gizzard by 68%.…”

“…The commonly used compound is AFCF e ammonium ferric hexacyanoferrate (Arnaud et al, 1988;Hove and Ekern, 1988;Hansen et al, 1996;Paasikallio et al, 2000). The reduction of 90e 98% was achieved in cows with 3 g of AFCF daily; in calves and pigs with 2 g of AFCF daily (Giese, 1988) and in broilers with 0.2 g of AFCF daily per chick (Vitorovic, 1993;Rachubik and Kowalski, 2001).…”

Northern conditions influencing the selection of countermeasures after radioactive fallout in Finland

“…A daily dose of 21 mg AFCF given to sheep fed with contaminated silage for 14 days, reduced 134 Cs transfer to muscle by 45% compared to control sheep (Paasikallio et al, 2000). With higher dosage the decrease was even greater.…”

Safety and efficacy of a feed additive consisting of ferric (III) ammonium hexacyanoferrate (II) for ruminants (domestic and wild), calves prior the start of rumination, lambs prior the start of rumination, kids prior the start of rumination and pigs (domestic and wild) (Honeywell Specialty Chemicals Seelze GmbH)

“…A study was carried out to examine the effect of AFCF on the transfer of caesium from grass silage to the tissues of male lambs (Paasikallio et al., 2000). During grass processing for ensiling, AFCF was sprayed on grass contaminated with 134 Cs, the ensiling process lasted then 45 days.…”