Large-scale genome-wide SNP analysis reveals the rugged (and ragged) landscape of global ancestry, phylogeny, and demographic history in chicken breeds.

The worldwide chicken gene pool encompasses a remarkable, but shrinking, number of divergently selected breeds of diverse origin. This study was a large-scale genome-wide analysis of the landscape of the complex molecular architecture, genetic variability, and detailed structure among 49 populations. These populations represent a significant sample of the world's chicken breeds from Europe (Russia, Czech Republic, France, Spain, UK, etc.

Comparative peculiarities of genomic diversity in Gallus gallus domesticus chickens with decorative plumage: the muffs and beard phenotype.

Throughout history, humans have been attempting to develop the ornamental features of domestic animals in addition to their productive qualities. Many chicken breeds have developed tufts of elongated feathers that jut out from the sides and bottom of the beak, leading to the phenotype known as muffs and beard. It is an incomplete autosomal dominant phenotype determined by the Mb locus localised on chromosome GGA27.

[Potential for infusion correction of COVID-19-associated endotheliopathy].

Aim: To evaluate the relationship between the systemic inflammatory response and the severity of COVID-19-associated endotheliopathy and the effect of succinate-containing crystalloid solution (sodium meglumine succinate) on it in patients with severe COVID-19.

Materials And Methods: Clinical and laboratory parameters of 53 intensive care unit's patients with COVID-19 complicated by community-acquired bilateral multisegmental pneumonia were analyzed. Intensive therapy complex of 27 patients (study group) included daily infusion of 1.

The Genetic Diversity of Horse Native Breeds in Russia.

Horses were domesticated later than other farm animals. Horse breeds have been selectively developed by humans to satisfy different needs and purposes. The factory and indigenous breeds are of particular interest, having been bred in purity for many centuries without the addition of foreign blood.