Genetic associations of in-line recorded milkability traits and udder conformation with udder health

Carlström, C.; Strandberg, E.; Johansson, Kjell; Pettersson, G.; Stålhammar, H.; Philipsson, J.

doi:10.1080/09064702.2016.1260154

Cited by 12 publications

(8 citation statements)

References 12 publications

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“…This is probably due to differences in trait specification, analyzed AMS brand, and population. Weak to moderate genetic correlations existed between the AMS udder conformation traits and udder health, which were in agreement with Carlström et al (2016a). The AMS udder conformation traits showed weak genetic correlations with longevity.…”

Section: Discussionsupporting

confidence: 77%

Genetic analysis of udder conformation traits derived from automatic milking system recording in dairy cows

Poppe

Mulder

Ducro

et al. 2019

Journal of Dairy Science

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Cartesian teat coordinates measured by automatic milking systems (AMS) provide new opportunities to record udder conformation traits and to study changes in udder conformation genetically and phenotypically within and between parities. The objective of this study was to estimate heritabilities and repeatabilities of AMS-based udder conformation traits within parities, to estimate genetic correlations between parities for AMS-based udder conformation traits, and to estimate genetic correlations between AMS-based udder conformation traits and classifier-based udder conformation traits, longevity, and udder health. Data from 70 herds, including 12,663 first-parity cows, 10,206 second-parity cows, and 7,627 third-parity cows, were analyzed using univariate and bivariate mixed animal models. Heritabilities of the AMS udder conformation traits were large (0.37-0.67) and genetic correlations between the AMS udder conformation traits and classifier-based traits were strong (>0.91). Repeatabilities within parities were large as well (0.89-0.97), indicating that a single record on udder conformation per lactation reflects udder conformation well. Genetic correlations of AMS udder conformation traits between parities were strong (0.88-1.00) and were stronger than the permanent environmental correlations. This shows that udder conformation changes over parities, but this change is mostly due to nongenetic factors. Based on these results, the current herd classification system, where cows are scored on udder conformation once in first parity, is sufficient. The AMS udder conformation traits as defined in this study have limited value as replacement for classifier-based udder conformation traits because they have smaller genetic correlations with functional traits than classifier-based traits. In summary, udder conformation hardly changes genetically between parities and is highly repeatable within parities. Udder conformation traits based on AMS need fine-tuning before they can replace classifier-based traits, and AMS teat coordinates probably contain additional information about udder health that is yet to be explored.

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Section: Discussionsupporting

confidence: 77%

Genetic analysis of udder conformation traits derived from automatic milking system recording in dairy cows

Poppe

Mulder

Ducro

et al. 2019

Journal of Dairy Science

View full text Add to dashboard Cite

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“…Udder conformation traits (Caraviello et al, 2004;Kern et al, 2015) and udder health (Mohd Nor et al, 2014) are known to be strongly associated with survival. Udder and health traits are correlated (Carlström et al, 2016), and udder traits have even been suggested as candidate traits for indirect prediction of longevity (Kern et al, 2015). Udder health phenotype variables were selected in the form of negative indication counts and SCC, which is associated with increased risk of culling (Beaudeau et al, 2000).…”

Section: Discussionmentioning

confidence: 99%

Predicting survival in dairy cattle by combining genomic breeding values and phenotypic information

Heide

Veerkamp

Pelt

et al. 2020

Journal of Dairy Science

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“…Advantages of crossbred cows over HO cows for fertility and survival may have resulted from the increased BCS of crossbreds (Pryce and Harris, 2006;Walsh et al, 2008;Hazel et al, 2014). Studies of pure HO cows have found negligible relationships between rump, leg, and udder conformation with metabolic and reproductive diseases (Zwald et al, 2004), but HO cows with shallow udders are superior for udder health (Zwald et al, 2004;Carlström et al, 2016a).…”

Section: Introductionmentioning

confidence: 99%

Fertility, survival, and conformation of Montbéliarde × Holstein and Viking Red × Holstein crossbred cows compared with pure Holstein cows during first lactation in 8 commercial dairy herds

Hazel¹,

Heins²,

Hansen³

2017

Journal of Dairy Science

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Montbéliarde (MO) × Holstein (HO) and Viking Red (VR) × HO crossbred cows were compared with pure HO cows in 8 large, high-performance dairy herds in Minnesota. All cows calved for the first time from December 2010 to April 2014. Fertility and survival traits were calculated from records of insemination, pregnancy diagnosis, calving, and disposal that were recorded via management software. Body condition score and conformation were subjectively scored once during early lactation by trained evaluators. The analysis of survival to 60 d in milk included 536 MO × HO, 560 VR × HO, and 1,033 HO cows during first lactation. Cows analyzed for other fertility, survival, and conformation traits had up to 13% fewer cows available for analysis. The first service conception rate of the crossbred cows (both types combined) increased 7%, as did the conception rate across the first 5 inseminations, compared with the HO cows during first lactation. Furthermore, the combined crossbred cows (2.11 ± 0.05) had fewer times bred than HO cows (2.30 ± 0.05) and 10 fewer d open compared with their HO herdmates. Across the 8 herds, breed groups did not differ for survival to 60 d in milk; however, the superior fertility of the crossbred cows allowed an increased proportion of the combined crossbreds (71 ± 1.5%) to calve a second time within 14 mo compared with the HO cows (63 ± 1.5%). For survival to second calving, the combined crossbred cows had 4% superior survival compared with the HO cows. The MO × HO and VR × HO crossbred cows both had increased body condition score (+0.50 ± 0.02 and +0.25 ± 0.02, respectively) but shorter stature and less body depth than HO cows. The MO × HO cows had less set to the hock and a steeper foot angle than the HO cows, and the VR × HO cows had more set to the hock with a similar foot angle to the HO cows. The combined crossbred cows had less udder clearance from the hock than HO cows, more width between both front and rear teats, and longer teat length than the HO cows; however, the frequency of first-lactation cows culled for udder conformation was uniformly low (<1%) across the breed groups.

show abstract

Genetic associations of in-line recorded milkability traits and udder conformation with udder health

Cited by 12 publications

References 12 publications

Genetic analysis of udder conformation traits derived from automatic milking system recording in dairy cows

Genetic analysis of udder conformation traits derived from automatic milking system recording in dairy cows

Predicting survival in dairy cattle by combining genomic breeding values and phenotypic information

Fertility, survival, and conformation of Montbéliarde × Holstein and Viking Red × Holstein crossbred cows compared with pure Holstein cows during first lactation in 8 commercial dairy herds

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