caa a22 4500 38806000X CHVBK 20180307125117.0 cr unu---uuuuu 161130e199812 xx s 000 0 eng 10.1017/S135772980003280X doi S135772980003280X pii (NATIONALLICENCE)cambridge-10.1017/S135772980003280X Predicting breeding values for herd life of Holstein-Friesian dairy cattle from lifespan and type [Elektronische Daten] Data comprised information on herd life from two different sources: actual lifespan and type data. The optimum way of predicting breeding values (BVs) for herd life from both these sources is a multivariate best linear unbiased predictor (BLUP) analysis of lifespan and the linear type traits most closely related to it. To reduce computing requirements, we suggest a bivariate BLUP analysis, where the direct information is lifespan, measured in lactations and the indirect information is a phenotypic index of type traits weighted by their economic values. Such an index is shown to be almost as efficient as using the individual traits. Genetic correlations between functional lifespan and the linear type traits were estimated, and based on these foot angle (rg = 0·22) udder depth (rg = 0·24) and teat length (rg = -0·44) were chosen to predict herd life. Breeding values for herd life were predicted in a BLUP analysis for around 500 000 heifers. The traits were lifespan and the phenotype index offoot angle, udder depth and teat length. For bulls with a minimum of 10 daughters BVs ranged from -0·9 lactations to +1·0 lactations, indicating a difference of approximately one lactation between the daughters of extreme bulls. For sires with at least 50 daughter records for lifespan, type information contributed little to the accuracy of herd life BVs. Copyright © British Society of Animal Science 1998 breeding value nationallicence dairy cattle nationallicence lifespan nationallicence types nationallicence Brotherstone S. Institute of Cell, Animal and Population Biology, University of Edinburgh, West Mains Road, Edinburgh EH9 3JT Veerkamp R. F. Genetics and Behavioural Sciences, Scottish Agricultural College, West Mains Road, Edinburgh EH9 3JG Hill W. G. Institute of Cell, Animal and Population Biology, University of Edinburgh, West Mains Road, Edinburgh EH9 3JT Animal Science Cambridge University Press 67/3(1998-12), 405-411 1357-7298 67:3<405 1998 67 ASC https://doi.org/10.1017/S135772980003280X text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S135772980003280X text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Brotherstone S. Institute of Cell, Animal and Population Biology, University of Edinburgh, West Mains Road, Edinburgh EH9 3JT NATIONALLICENCE 700 1- Veerkamp R. F. Genetics and Behavioural Sciences, Scottish Agricultural College, West Mains Road, Edinburgh EH9 3JG NATIONALLICENCE 700 1- Hill W. G. Institute of Cell, Animal and Population Biology, University of Edinburgh, West Mains Road, Edinburgh EH9 3JT NATIONALLICENCE 773 0- Animal Science Cambridge University Press 67/3(1998-12), 405-411 1357-7298 67:3<405 1998 67 ASC CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge