Persistence of differences between dairy cows categorized as low or high methane emitters, as estimated from milk mid-infrared spectra and measured by GreenFeed.

Currently, various attempts are being made to implement breeding schemes aimed at producing low methane (CH) emitting cows. We investigated the persistence of differences in CH emission between groups of cows categorized as either low or high emitters over a 5-mo period. Two feeding regimens (pasture vs.

Meta-analysis of genome-wide association studies for cattle stature identifies common genes that regulate body size in mammals.

Stature is affected by many polymorphisms of small effect in humans . In contrast, variation in dogs, even within breeds, has been suggested to be largely due to variants in a small number of genes. Here we use data from cattle to compare the genetic architecture of stature to those in humans and dogs.

Locus-specific ancestry to detect recent response to selection in admixed Swiss Fleckvieh cattle.

Identification of selection signatures is one of the current endeavors of evolutionary genetics. Admixed populations may be used to infer post-admixture selection. We calculated local ancestry for Swiss Fleckvieh, a composite of Simmental (SI) and Red Holstein Friesian (RHF), to infer such signals.