Articles

• Preface

  A Groen

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• Heteroskedastic threshold models with applications to the analysis of calving difficulties

  J L Foulley

  3

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• Direct and maternal effects on calving ease in heifers and second parity Piemontese cows

  P Carnier, R Dal Zotto, A Albera, M Bona

  12

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• Calving difficulties and calf mortality in Finnish dairy cattle population

  S Niskanen, J Juga

  17

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• Genetic evaluation of calving ease in Spanish Holstein population

  S Alday, E Ugarte

  21

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• Considering stillbirths in the breeding program?

  J Philipsson, L Steinbock, B Berglund

  25

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• Preliminary investigations on the feasibility of a stillbirth evaluation in the USA

  P J Berger, J R Thompson, C G Sattler

  28

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• Physiological aspects of reproduction and fertility in dairy cows

  T van der Lende

  33

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• Identifying heritable endocrine parameters associated with fertility in postpartum dairy cows

  A O Darwash, G E Lamming, J A Woolliams

  40

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• Genetics and breeding for fertility

  G Thaller

  55

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• The use of milk progesterone measurements for genetic improvement of fertility traits in dairy cattle

  R F Veerkamp, J K Oldenbroek, T van der Lende

  62

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• Is selection on semen characteristics needed?

  V Ducrocq, P Humblot

  68

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• The effect of inbreeding on components of dairy cattle fertility as calculated from non-return data, using a multiphasic logistic function

  T I Pulkkinen, T van der Lende, A F Groen, L Kaal, J Zonderland

  74

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• Economic weights for fertility and reproduction traits relative to other traits and effects of including functional traits into a total merit index

  J Miesenberger, J Sölkner, A Essl

  78

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• Breeding for female fertility - current status and future possibilities in Norway

  I Ranberg, T Steine, G Klemetsdal

  87

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• Environmental and genetic effects on the 60-day nonreturn rate in Finnish AI bulls

  K Hyppänen, J Juga

  91

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• Genetic evaluation for fertility in French dairy cattle

  D Boichard, A Barbat, M Briend

  99

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• Index for daughters´ fertility in the Netherlands

  G de Jong

  102

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• Effect of environmental factors on non return rate in Italian Holstein-Friesians

  F Miglior, F Pizzi, N Guaita

  106

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• Genetic evaluation for NR90 of Holstein cattle in Germany

  E Pasman, F Reinhardt

  109

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• Reproduction traits evaluation in cattle in the Czech Republic

  V Cermák, J Slapnika, J Pribyl, L Barto

  114

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