Genetic associations of teat cup attachment failures, incomplete milkings, and handling time in automatic milking systems with milkability, temperament, and udder conformation
- 2 April 2016
- journal article
- research article
- Published by Taylor & Francis in Acta Agriculturae Scandinavica, Section A — Animal Science
- Vol. 66 (2), 75-83
- https://doi.org/10.1080/09064702.2016.1260153
Abstract
Automatic milking systems (AMS) allow recording of alternative milkability measures. Our objectives were to estimate genetic parameters for teat cup attachment failures (AtF), incomplete milkings (IM), and handling time (HT), and their genetic correlations with box time (BT), udder traits and temperament. Teat coordinates were to measure udder conformation and teat placement. Genetic correlations were estimated between these traits and linear classification traits. Data on Swedish Holstein and Swedish Red cows in 19 AMS herds and 74 herds with conventional milking parlors were analyzed. HT and IM had low heritabilities, but that of AtF was 0.21–0.31. Genetic correlations between AtF and temperament were 0.44–0.71 (calm cows having low AtF). Short BT was weakly genetically associated with shallow udders with short and thin teats. High genetic correlations (0.91–0.98) were found between teat coordinate traits and linear classification traits. Thus, AMS records can be effectively used to select for improved milkability and temperament.Keywords
Funding Information
- Stiftelsen Lantbruksforskning (H0630270 and V0930012)
This publication has 13 references indexed in Scilit:
- Genetic evaluation of in-line recorded milkability from milking parlors and automatic milking systemsJournal of Dairy Science, 2014
- Feasibility of using automatic milking system data from commercial herds for genetic analysis of milkabilityJournal of Dairy Science, 2013
- Lactating dairy cows adapt quickly to being milked by an automatic milking systemJournal of Dairy Science, 2012
- Estimating efficiency in automatic milking systemsJournal of Dairy Science, 2012
- Milking Machines | Robotic MilkingPublished by Elsevier ,2011
- Genetic parameters for serial, automatically recorded milkability and its relationship to udder health in dairy cattleAnimal, 2007
- The association between fetching for milking and dairy cows' behaviour at milking, and avoidance of human approach — An on-farm study in herds with automatic milking systemsLivestock Science, 2006
- Genetic Parameters for Clinical Mastitis, Somatic Cell Score, Production, Udder Type Traits, and Milking Ease in First Lactation HolsteinsJournal of Dairy Science, 1999
- Development of an Udder Health Index for Sire Selection Based on Somatic Cell Score, Udder Conformation, and Milking SpeedJournal of Dairy Science, 1998
- Behavioral agitation during handling of cattle is persistent over timeApplied Animal Behaviour Science, 1993