Use of genetic markers in breeding of a commercial cattle herd]

Combination of type estimation and use of immunogenetic markers to analyze genotypes of breed animals permits intensifying breeding and promotes more rapid obtaining of the desired inherited material. It is suggested to carry out breeding in commercial cattle herds under constant immunogenetic control.     

Changes in pain sensitivity under increased atmospheric pressure]

It has been established that augmentation of air pressure from 0.1 to 1.1 MPa (with 0.1 MPa intervals) was accompanied in rats with the development of progressive analgesia which was measured according to the threshold of vocalization in the test of electrical stimulation of the tail. The highest analgesic response arose at 0.7-1.1 MPa. All the animals might be divided into two groups: group 1-72% of the animals with a 200% increase of the threshold, group 2--animals with such an increase by 15%. The augmentation of the pressure of heliox (79.1% of helium, 20.9% of oxygen) also caused analgesia, but not so strong. In patients pain thresholds to the mechanical nociceptive stimulation also increased by about 43-67% and 95-100% under the influence of increased air pressure of 0.4 and 0.7 MPa, respectively. In group 1 patients (67%) pain threshold increased by 50-100%, in group 2 by 15-25%. Pretreatment with naloxone (1 mg/kg), atropine (1 mg/kg), yohimbine (1 mg/kg), parachloramphetamine (5 mg/kg) and prasosin (1 mg/kg) decreased hyperbaric analgesia in rats by 41-56, 41-56, 17-19, 17-19%, respectively. The role of increased partial pressure of nitrogen in hyperbaric analgesia and possible neurochemical mechanisms of its realization are discussed.     

A method for calculating a coefficient of inbreeding and specific weight of an ancestor in an animal pedigree]

A new method is suggested to calculate an inbreeding coefficient and specific weight of ancestor in animal pedigree. It promotes a 10-fold decrease in expenditures of labour as against the S. Wright-D. Kislovsky formula.     

PPARGC1A gene polymorphism is associated with exercise-induced fat loss

Molecular Biology Reports - Obesity is a widespread problem within modern society, serving to increase the risk of cardiovascular, metabolic, and neurodegenerative disorders. Peroxisome...     

Use of genetic markers to estimate and obtain animals of the desirable type]

Alleles of B blood groups in dairy cows of different genotypes have been analyzed allowing for the genetic distance, coefficient and degree of homozygosis. Application of the above information to select cows for bulls increases efficiency of breeding in dairy farming.     

Genetic interrelationship between lactation maturity, fertility and life productivity in Simmental cows]

In Ukrainian simmental heritabilities of maturity rate defined as ratio of the highest to first lactation yields were 0.17. Single lactation production and longevity are negatively correlated (-0.45). Waiting for third lactation records of test daughters and including secondary trains like reproduction or persistency into selection should slow down or stop the decrease.     

Hematologic chimerism in cattle twins]

A cytogenetic examination of a cow and its offsprings, obtained by pair transplantations of the embryos was carried out. The fragile X and the heteromorphism of the chromosomes XX of this cow and some of its offsprings were revealed. The variability of the hematological chimerism of the pair transplanted embryos was observed. The immigrated cells were, as a rule, distinguished by the comparatively low frequencies of the metaphases with the nearly located chromosomes XX. The heterogeneity of the stem blood cells of the embryos for some traits, and for the ability to migrate in the blood of the twin is under discussion.