Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (First Revision) which is identical with ISO 13904 : 2016 ‘Animal feeding stuffs - Determination of tryptophan content’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Animal Husbandry, Feeds and Equipment Sectional Committee and approval of the Food and Agriculture Division Council

This Standard was first published in year 2007 and was identical adoption of ISO 13904 : 2005 ‘Animal feeding stuffs — Determination of tryptophan content’. The first revision of this standard has been undertaken to align it with the latest version of ISO 13904 : 2016.