Undesired Phenotypic and Genetic Trend for Stillbirth in Danish Holsteins

The primary aim of this study was to evaluate the phenotypic and genetic trends for stillbirth in Danish Holsteins. Trends of calving difficulty and calf size were also evaluated. The second aim was to compare predicted transmitting abilities (PTA) of sires for stillbirth using a linear and a thresh...

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Veröffentlicht in:	Journal of dairy science 2004-05, Vol.87 (5), p.1477-1486
Hauptverfasser:	Hansen, M., Misztal, I., Lund, M.S., Pedersen, J., Christensen, L.G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Animal productions Animals Biological and medical sciences Birth Weight Breeding breeding value calf size calves calving calving ease Cattle Cattle Diseases - genetics complex vertebral malformation dairy cows Danish Black and White Dystocia - genetics Dystocia - veterinary ease of birth Female fetal death Food industries Fundamental and applied biological sciences. Psychology genetic disorders genetic trend Genotype heterosis heterozygosity Holstein Hybrid Vigor - genetics introgression Linear Models maternal effect mathematical models Milk and cheese industries. Ice creams Phenotype phenotypic correlation Pregnancy Pregnancy Outcome - genetics Pregnancy Outcome - veterinary stillbirth Terrestrial animal productions threshold models Vertebrates
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