Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 547001
Title Genetic analysis of udder conformation traits derived from AMS recording in dairy cows
Author(s) Ducro, B.J.; Poppe, H.W.M.; Mulder, H.A.; Jong, G. de
Source In: Proceedings of the 11th World Congress on Genetics Applied to Livestock Production. - WCGALP - 5 p.
Event 11th World Congress on Genetics Applied to Livestock Production, Auckland, 2018-02-11/2018-02-16
Department(s) WIAS
Animal Breeding and Genomics
Animal Breeding & Genomics
Publication type Contribution in proceedings
Publication year 2018
Abstract Udder conformation is an important trait in dairy cattle breeding because of its relation to milk production (Short and Lawlor, 1992), udder health (Samoré and Groen, 2006) and longevity (Vollema et al., 2000). Breeding values for udder conformation are usually estimated based on udder traits scored by classifiers which show substantial heritability. Alternatively, udder conformation traits can be derived from teat coordinates recorded by automatic milking systems (AMS).
Advantages of deriving udder conformation traits from AMS records as compared to classification scores are that AMS records are more objective, they are recorded every day, and records of not only heifers, but also of older cows are available. Carlström et al. (2016) and Byskov et al. (2012) showed that heritabilities of udder conformation traits derived from AMS records were higher
than heritabilities of udder conformation traits scored by classifiers, and both studies showed that the genetic correlation between the two was close to unity. In both studies only data on first parity cows was used. However, AMS records teat coordinates of all visiting cows, including later parities.Aim of the study was to estimate genetic parameters of udder conformation derived from A S
information in first and higher parities as well as genetic correlation between
parities.
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