GB/T 41189-2021Nutrient requirements of egg duck (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1. Structure and Drafting Rules of Standardization Documents" drafted.

1 Scope

This document specifies the nutritional requirements for small and medium-sized laying ducks.

This document is applicable to feed enterprises and various types of breeding farms (households) for the preparation of laying duck diets.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 10647 Feed Industry Terminology

NY/T 823 Poultry Performance Terminology and Metric Calculation Methods

3 Terms and Definitions

The terms and definitions defined in GB/T 10647 and NY/T 823 and the following terms and definitions apply to this document.

4 Nutritional requirements of small laying ducks

4.1 The nutritional requirements of small laying ducks in the stage of 0-week-old to 5% egg production rate should meet the requirements of Table 1 to Table 4, and the stage of 0-week-old to 5% egg production rate

The growth performance achieved when the laying duck meets the nutritional requirements shall meet the requirements of Table 5.

4.2 The nutritional requirements of small-scale laying ducks during the laying period should meet the requirements of Tables 6 to 9, and the requirements of laying ducks in the early laying period, peak laying period and late laying period should be met.

The egg performance achieved at the nutrient requirements should meet the requirements of Table 10.

4.3 The nutritional requirements of small-sized egg-breeding ducks during the laying period shall meet the requirements of Table 11~Table 14.

5 Nutritional requirements of medium-sized laying ducks

5.1 The nutritional requirements of medium-sized ducks at the stage of 0-week-old to 5% egg production rate should meet the requirements of Table 15 to Table 18, and the 0-week-old to 5% egg production rate stage

The growth performance of segmented ducks when they meet the nutritional requirements shall meet the requirements of Table 19.

5.2 The nutritional requirements of medium-sized ducks during the laying period should meet the requirements of Table 20 to Table 23, and the laying ducks are full at the early stage of laying eggs, the peak period of laying eggs and the later stage of laying eggs.