Current application of and efforts towards selection strategies in czechoslovakia based on ram and ewe selection

International audienc

Components of heterosis

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The fertility of prolific breeds (Finnsheep, Romanov Sheep, East Friesian Milksheep) and their crosses with mutton merino

International audienc

Breeding and exploitation of prolific breeds in Czechoslovakia

In the years 1971—1979 many experiments were conducted in order to elucidate problems of meat production increase in sheep. Ewes of native breeds (Mutton Merino = M, Improved Wallachian = I) were mated to rams of prolific breeds (Finnsheep = F, Romanov = R), producing F1 crossbred females. The crossbred ewes were mated to rams of a third mutton breed (Texel, Dorset Down, M) to produce meat lambs. In experiments from 1980 to 1987on the basis of the I and the R and F crossbred combinations were produced to provide contemporary comparison of purebreds, F1, F2 and backcrosses, both to I and to F and R. The purebred and crossbred populations were analysed for the estimation of crossbreeding parameters necessary for the optimization of the formation of a synthetic dam breed. The reproduction characters which were analysed were fertility, prolificacy, mortality rate, litter size (born and weaned) and milk production. From the wool production characters the greasy wool production, clean wool production and mean fibre diameter were of interest. From the production characters the following were analysed: birth, weaning and slaughter weights, daily gain from birth to weaning or slaughter, carcass weight and other carcass value traits

Gewinnfunktionen - ein hilfsmittel für die planung von gebrauchskreuzungen beim schwein

International audienc

Estimation of economic values of performance characters in pig and sheep breeding

International audienc

Genetics THE INFLUENCE OF WEANING WEIGHT ON GROWTH OF THE HYPLUS BROILER RABBIT

ABSTRACT The final crossbreds of the broiler rabbit HYPLUS (product of the company Grimaud Frères) were fattened from 42 to 84 days of age. The following traits were weekly recorded: body weight, average daily weight gain, average daily consumption of feed and feed conversion ratio with regard to the effect of the genotype (♂PS59 × ♀PS19; ♂PS119 × ♀PS19), replication, interaction genotype x replication and weight at 42 days of age (group 1: weight lower then 1300 g and group 2: weight greater then 1300 g). The highest difference in body weight between both genotypes was found at the age of 70 days, when the difference was 5.6%. During the whole fattening period the genotype (59 x 19) showed lower feed conversion ratio (P&lt;0.001) and higher average daily gain (P&lt;0.05). The effect of replication was not-significant in most of the traits. The first replication showed a significantly higher value in the average daily gains than the second replication (P&lt;0.05). The interaction genotype x replication was significant in the body weight at 42, 56, 63 and 70 days of age and in the feed consumption from 49 to 56 days. Rabbits of group 1 weighed 2655 g at the end of fattening period and rabbits of group 2 weighed 2892 g respectively. No growth compensation during the fattening period was observed in group 1. The body weight at 42 days of age had a significant influence on body weight at the end of fattening

PDBe-KB: collaboratively defining the biological context of structural data

The Protein Data Bank in Europe - Knowledge Base (PDBe-KB, https://pdbe-kb.org) is an open collaboration between world-leading specialist data resources contributing functional and biophysical annotations derived from or relevant to the Protein Data Bank (PDB). The goal of PDBe-KB is to place macromolecular structure data in their biological context by developing standardised data exchange formats and integrating functional annotations from the contributing partner resources into a knowledge graph that can provide valuable biological insights. Since we described PDBe-KB in 2019, there have been significant improvements in the variety of available annotation data sets and user functionality. Here, we provide an overview of the consortium, highlighting the addition of annotations such as predicted covalent binders, phosphorylation sites, effects of mutations on the protein structure and energetic local frustration. In addition, we describe a library of reusable web-based visualisation components and introduce new features such as a bulk download data service and a novel superposition service that generates clusters of superposed protein chains weekly for the whole PDB archive

PDBe-KB: collaboratively defining the biological context of structural data

The Protein Data Bank in Europe – Knowledge Base (PDBe-KB, https://pdbe-kb.org) is an open collaboration between world-leading specialist data resources contributing functional and biophysical annotations derived from or relevant to the Protein Data Bank (PDB). The goal of PDBe-KB is to place macromolecular structure data in their biological context by developing standardised data exchange formats and integrating functional annotations from the contributing partner resources into a knowledge graph that can provide valuable biological insights. Since we described PDBe-KB in 2019, there have been significant improvements in the variety of available annotation data sets and user functionality. Here, we provide an overview of the consortium, highlighting the addition of annotations such as predicted covalent binders, phosphorylation sites, effects of mutations on the protein structure and energetic local frustration. In addition, we describe a library of reusable web-based visualisation components and introduce new features such as a bulk download data service and a novel superposition service that generates clusters of superposed protein chains weekly for the whole PDB archive