Journal
JOURNAL OF DAIRY SCIENCE
Volume 104, Issue 1, Pages 1183-1191Publisher
ELSEVIER SCIENCE INC
DOI: 10.3168/jds.2020-18297
Keywords
mastitis; genetics; genetic selection; complex traits
Funding
- US Department of Agriculture National Institute of Food and Agriculture (USDA/NIFA, Washington, DC) Federal Formula Funds Hatch Project [NYC-127898]
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Mastitis is the costliest disease for dairy producers, and efforts have shifted towards preventative measures, but breeding for resistance remains challenging.
Mastitis is the costliest disease facing dairy producers today; consequently, it has been the subject of substantial research focus. Efforts have evolved from an initial focus on understanding the etiology of intramammary infections to the application of preventative measures, including attempts to breed cows that are resistant to infection. However, breeding for resistance to infection has proven difficult, given the complexity of the disease and the high expense associated with assembling highquality genotypes and phenotypes. This review provides a brief background on mastitis; illustrates current understanding of the genetics influencing mastitis and the application of this knowledge; and discusses challenges and limitations in understanding these mechanisms and applying these findings to genetic improvement strategies.
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