T/NAASS 013-2022 Active Group standards

T/NAASS 013-2022 The full genome selection technique protocol for Holstein young female cows

Publish Date: 2022-11-11 Implement Date: 2022-12-15 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/NAASS 013-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Animal husbandry and breeding

Publish Date: 2022-11-11

Implement Date: 2022-12-15

Scope

Scope: This document specifies the terms and definitions of whole-genome selection for young Holstein heifers in Ningxia, the construction of a genome selection platform, and basic procedures, etc. This document is applicable to whole-genome selection and core herd establishment for young Holstein heifers in large-scale dairy farms in Ningxia. Main technical content: 3. Terminology and definitions The following terms and definitions apply to this document. 3.1 Young Holstein heifers Refers to Holstein heifers from weaning to their first calving. 3.2 Pedigree A family archive used to record the birth dates and ancestral information of cattle, including information such as cattle number, gender, birth date, father, mother, grandfather, grandmother, and maternal and paternal grandparents. 3.3 Phenotype The phenotypic characteristics exhibited by individuals with a specific genotype under certain environmental conditions. It should be associated with a specific trait. 3.4 Genotype The nucleotide sequence of different bases (A/T/G/C) on the DNA double helix, which constitutes a functional segment of DNA. The combination of all genes is called a genotype. 3.5 Production performance measurement Dairy herd improvement Monthly measurement and recording of the milk production of lactating cows, collection of their mixed samples from all day milking to determine milk components, somatic cells, and urea nitrogen, etc. Performance and health indicators, combined with information on herd changes such as calving, drying off, culling, and reproduction, are analyzed and processed by dedicated software to form an analysis report, which is used to guide farm production management and breeding work. [Source: DB/T1014-2014, Section 3.1, with modifications] 3.6 Body type classification A method of scoring individuals based on their body type traits, setting the maximum and minimum values of the traits according to the variation range of biological characteri