Genetic analysis of udder conformation traits derived from AMS recording in dairy cows

Research output: Chapter in Book/Report/Conference proceedingConference paperAcademicpeer-review

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.
Original languageEnglish
Title of host publicationProceedings of the 11th World Congress on Genetics Applied to Livestock Production
Subtitle of host publicationVolume Electronic Poster Session - Biology & Species - Bovine (dairy) 2
PublisherWCGALP
Number of pages5
Publication statusPublished - Feb 2018
Event11th World Congress on Genetics Applied to Livestock Production - Auckland, New Zealand
Duration: 11 Feb 201816 Feb 2018

Conference

Conference11th World Congress on Genetics Applied to Livestock Production
CountryNew Zealand
CityAuckland
Period11/02/1816/02/18

Fingerprint

udders
milking
genetic techniques and protocols
dairy cows
heritability
teats
cows
genetic correlation
cattle breeding
breeding value
dairy cattle
heifers
milk production
taxonomy

Cite this

Ducro, B. J., Poppe, H. W. M., Mulder, H. A., & de Jong, G. (2018). Genetic analysis of udder conformation traits derived from AMS recording in dairy cows. In Proceedings of the 11th World Congress on Genetics Applied to Livestock Production: Volume Electronic Poster Session - Biology & Species - Bovine (dairy) 2 [479] WCGALP.
Ducro, B.J. ; Poppe, H.W.M. ; Mulder, H.A. ; de Jong, G. / Genetic analysis of udder conformation traits derived from AMS recording in dairy cows. Proceedings of the 11th World Congress on Genetics Applied to Livestock Production: Volume Electronic Poster Session - Biology & Species - Bovine (dairy) 2. WCGALP, 2018.
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abstract = "Udder conformation is an important trait in dairy cattle breeding because of its relation to milk production (Short and Lawlor, 1992), udder health (Samor{\'e} 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. Carlstr{\"o}m 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 betweenparities.",
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Ducro, BJ, Poppe, HWM, Mulder, HA & de Jong, G 2018, Genetic analysis of udder conformation traits derived from AMS recording in dairy cows. in Proceedings of the 11th World Congress on Genetics Applied to Livestock Production: Volume Electronic Poster Session - Biology & Species - Bovine (dairy) 2., 479, WCGALP, 11th World Congress on Genetics Applied to Livestock Production, Auckland, New Zealand, 11/02/18.

Genetic analysis of udder conformation traits derived from AMS recording in dairy cows. / Ducro, B.J.; Poppe, H.W.M.; Mulder, H.A.; de Jong, G.

Proceedings of the 11th World Congress on Genetics Applied to Livestock Production: Volume Electronic Poster Session - Biology & Species - Bovine (dairy) 2. WCGALP, 2018. 479.

Research output: Chapter in Book/Report/Conference proceedingConference paperAcademicpeer-review

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N2 - 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 betweenparities.

AB - 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 betweenparities.

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Ducro BJ, Poppe HWM, Mulder HA, de Jong G. Genetic analysis of udder conformation traits derived from AMS recording in dairy cows. In Proceedings of the 11th World Congress on Genetics Applied to Livestock Production: Volume Electronic Poster Session - Biology & Species - Bovine (dairy) 2. WCGALP. 2018. 479