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Magnesium Ferrite as a Marker in Absorption Trials with Chicks¹

Division of Animal Nutrition, ARO, The Volcani Center, 50250 Bet Dagan, Israel

Magnesium ferrite, a non-radioactive marker which can be measured by a simple method, was used for determination of nitrogen absorption in chicks. A strong resemblance was obtained between the results with this marker and those obtained previously with ⁹¹Y. Nitrogen absorption values for a feather meal sample were not influenced by the diets nor by the experimental design.

KEY WORDS: • magnesium ferrite • absorption • marker

¹ Contribution from the Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel. No. 347-E, 1980 series.

Manuscript received 3 August 1981.