Short communication: Genetic correlation of bovine leukosis incidence with somatic cell score and milk yield in a US Holstein population

Journal of Dairy Science
E A AbdallaG J M Rosa

Abstract

Bovine leukosis (BL) is a retroviral disease caused by the bovine leukosis virus (BLV), which affects only cattle. Dairy cows positive for BL produce less milk and have more days open than cows negative for BL. In addition, the virus also affects the immune system and causes weaker response to vaccines. Heritability estimates of BL incidence have been reported for Jersey and Holstein populations at about 0.08, indicating an important genetic component that can potentially be exploited to reduce the prevalence of the disease. However, before BL is used in selection programs, it is important to study its genetic associations with other economically important traits such that correlated responses to selection can be predicted. Hence, this study aimed to estimate the genetic correlations of BL with milk yield (MY) and with somatic cell score (SCS). Data of a commercial assay (ELISA) used to detect BLV antibodies in milk samples were obtained from Antel BioSystems (Lansing, MI). The data included continuous milk ELISA scores and binary milk ELISA results for 11,554 cows from 112 dairy herds across 16 US states. Continuous and binary milk ELISA were analyzed with linear and threshold models, respectively, together with MY and SCS usi...Continue Reading

References

Oct 1, 1989·Veterinary Immunology and Immunopathology·J BrennerZ Trainin
Jan 1, 1994·Archives of Virology·V ZajacO Babusikova
Feb 12, 2011·Genetics, Selection, Evolution : GSE·Guilherme J M RosaMartinho A Silva
May 12, 2012·Veterinary Medicine International·Ronald J ErskineJessica T Houseman
Sep 12, 2012·The Journal of Dairy Research·Ronald J ErskineJessica T Houseman
Apr 5, 2014·Journal of the American Veterinary Medical Association·Paul C BartlettRonald J Erskine

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Citations

Oct 21, 2009·Journal of Dairy Science·R M DemeterJ A M van Arendonk
Jan 12, 2010·Journal of Dairy Science·J P SánchezL F de la Fuente
Mar 9, 2018·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Astha AgarwalPawan Kumar Agrawal
Sep 7, 2017·The Veterinary Record·Lucy GilesJulien Guevar
Oct 30, 2020·BMC Veterinary Research·Yasuko InagakiKazuhiko Imakawa

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