Estimation of genetic parameters for milk cell count and correlations with production traits in friesian holstein heifers

Swanson, G. J. T.; Gnanasakthy, Ari

doi:10.1017/s0308229600021176

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…A small negative genetic correlation between protein yield and protein content in lactation 1 was also reported by Swanson and Gnanasakthy (1991). Genetic correlations between protein percentage and yield traits indicate that response to selection for fat and protein yield can be achieved without a reduction in the level of protein percentage, which accords with the wishes of many European dairy breeders.…”

Section: Discussionmentioning

confidence: 62%

Univariate and multivariate parameter estimates for milk production traits using an animal model. I. Description and results of REML analyses

Visscher¹,

Thompson²

1992

Genet. Sel. Evol.

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REML) selon le modèle animal. Le nombre des données pour chaque lactation a été de 38 811, 26 223 et 16 542 pour les lactations 1, 2 et 3 respectivement. Les héritabilités des 3 critères de production ont été similaires: approximativement 0,36 en première lactation et 0,30 en seconde et troisième lactation. Les corrélations génétiques entre les caractères de production en lactations 1 et 2, par exemple la production laitière, ont été approximativement de 0,86. Les corrélations génétiques entre critères de production aux lactations 2 et 3 ont été pratiquement égaux à 1.

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Section: Discussionmentioning

confidence: 62%

Univariate and multivariate parameter estimates for milk production traits using an animal model. I. Description and results of REML analyses

Visscher¹,

Thompson²

1992

Genet. Sel. Evol.

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Phenol

Wallace

Staff²

2005

Kirk-Othmer Encyclopedia of Chemical Technology

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Phenol (hydroxybenzene) is a commercially important derivative of benzene. It is the primary feedstock for the production of epoxy resins and polycarbonates, phenolic resins and molding compounds, caprolactam, aniline, and other chemical derivatives. More than 95% of the phenol consumed is produced by the cumene peroxidation process. Phenol is a white, crystalline mass at room temperature. Its freezing point is 40.91°C. It is a protoplasmic poison that is corrosive to living tissue and is readily absorbed through the skin. Phenol’s consumption growth rate is based primarily on its use in engineering plastics such as bisphenol A, polycarbonates, polyetherimide and poly(phenylene oxide), and epoxy resins for the electronics industry. Due to the nature of its end markets, phenol consumption is highly cyclic. Future production processes for phenol will be affected by the disparity in growth rate between phenol and its coproduct, acetone.

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Genetic parameters for somatic cell count for three dairy breeds in the united kingdom (uk)

Mrode¹,

Swanson²,

Winters³

1995

Proc. Br.Soc. Anim. Sci.

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Mastitis constitutes a major source of economic loss in the national dairy herd. Although good management practices can produce a major reduction in mastitis, there is considerable interest in the reduction of mastitis through breeding. Somatic cell counts (SCC) have been used as a way of indirectly measuring sub-clinical mastitis within a herd. Since 1991, average cell count is obtained for all herds and this is used to adjust milk payments.Milk recording organisations introduced a cow cell count service in 1990. The data are now available for the preliminary analysis of the usefulness of somatic cell counts. The objective of this study was to estimate genetic parameters for SCC for three major breeds in the UK.

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Estimation of genetic parameters for milk cell count and correlations with production traits in friesian holstein heifers

Cited by 4 publications

References 6 publications

Univariate and multivariate parameter estimates for milk production traits using an animal model. I. Description and results of REML analyses

Univariate and multivariate parameter estimates for milk production traits using an animal model. I. Description and results of REML analyses

Phenol

Genetic parameters for somatic cell count for three dairy breeds in the united kingdom (uk)

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