Potential of somatic cell concentration in milk as a sire selection criterion to reduce mastitis in dairy cattle

Journal of Dairy Science
E M CoffeyR E Pearson

Abstract

Lactation records for somatic cell counts in milk, bacteriological culture results, antibiotic treatment for mastitis, and production were formed for cows in 30 cooperating dairy herds in Virginia. A second data set, including somatic cell counts and production information for cows in approximately 400 herds in Virginia (not including the original 30), was used to evaluate sires genetically for somatic cell count. Approximate genetic correlations between measures of cell count and measures of infection ranged from .36 to .67. These were highest (lowest) for frequency of infection by major (minor) pathogens. Corresponding phenotypic correlations were similar but slightly smaller. Neither somatic cell counts nor measures of infection were well correlated with treatment. Production traits generally had small, negative genetic and phenotypic relationships with cell counts, rates of infection, and measures of treatment. Correlations for evaluations of sires for cell count were positive with daughter averages for infection rates (.20 to .38) and treatment measures (.02 to .13). Largest (absolute value) correlations between evaluations of sires for cell count and production traits were for fat percentage (-.38) and fat yield (-.28). E...Continue Reading

References

Jan 1, 1979·Journal of Dairy Science·M J PaapeR E Pearson
Jul 1, 1977·Journal of Dairy Science·T R BatraR R Hacker
Feb 1, 1972·Journal of Dairy Science·J W WiltonS J Roberts
Feb 1, 1984·Journal of Dairy Science·R H Miller

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Citations

Jan 1, 2011·Animal : an International Journal of Animal Bioscience·A Sadeghi-SefidmazgiP R Amer
Apr 20, 2006·Animal Biotechnology·L Galina-PantojaJ K Lunney
Jul 30, 2015·Animal : an International Journal of Animal Bioscience·M D P PetersV Fischer
Nov 21, 2017·Journal of Dairy Science·Filippo MigliorChristine F Baes
Jun 11, 1992·Journal of Dairy Science·K A WeigelD H Kelley
Apr 9, 1999·Journal of Dairy Science·U M el-SaiedF San Primitivo
Dec 1, 1987·Journal of Dairy Science·G R Wiggans, G E Shook
Apr 1, 1992·Journal of Dairy Science·P J BoettcherC A Ernst
May 1, 1989·Journal of Dairy Science·G E Shook
Dec 1, 1995·Journal of Dairy Science·R ReentsJ C Dekkers
Oct 1, 1995·Journal of Dairy Science·J C DetilleuxD H Kelley
Aug 26, 2004·Journal of Dairy Science·R H MillerJ R Wright
Dec 22, 2006·Journal of Dairy Science·W OuweltjesR F Veerkamp
Sep 16, 2019·Journal of Dairy Science·Joel Ira WellerMichael van Straten
May 23, 2012·Journal of Dairy Science·A Sadeghi-SefidmazgiP R Amer
Oct 3, 2002·The Veterinary Journal·A Bradley

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