Библиотека ELiS

Technological transformation of reindeer husbandry in the Arctic Zone of Russia

Submitted by Гость (not verified) on Wed, 09/04/2024 - 23:08

Over the past few decades, the reindeer husbandry in Russia has gradually degraded. This is manifested in the reduction of the reindeer herd, lower economic efficiency of production, and a lack of financial resources for development. According to government statistics, in 2022 the unprofitability rate of domestic reindeer husbandry was 51.73%. The state constantly provides financial support to reindeer farms, compensating up to 95% of current costs, which allows them to continue their production activities, but does not provide opportunities for development.

Effect of meteorological conditions on the oil content of sunflower in the conditions of the Lower Volga region

Submitted by Гость (not verified) on Wed, 09/04/2024 - 23:08

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The aim of the work was to study the effect of precipitation and temperature during the vegetative season on the oil content of the studied sunflower cultivars. The article examines the dynamics of changes in the oil content of the sunflower cultivars selected by the Federal State Budgetary Scientific Institution “Federal Center of Agriculture Research of the South-East Region” for 2010–2019. It was revealed that the most favorable conditions for oil accumulation were observed in 2013, 2017 and 2019.

Dynamics of genetic changes in sires according to their daughters’ milk productivity in the pale dairy cattle population

Submitted by Гость (not verified) on Wed, 09/04/2024 - 23:08

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The studies are dedicated to the evaluation of changes in the genetic status of the pale dairy cattle population and its constituent breeds (Simmental and Red-and-White breed) on the main traits of milk productivity for the period from 1994 to 2017. Throughout the analysis period, a very moderate but positive trend was observed in the improvement of the genetic potential of these animal groups through the use of sires.

Analysis, isolation and identification of the microbiome from the ceca of the intestines of industrial pigs

Submitted by Гость (not verified) on Wed, 09/04/2024 - 23:08

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The article presents data on the use of modern methods of analysis, isolation and identification of representatives of the microbiocenosis of the ceca of the intestines of industrial pigs raised using intensive technology. Bacterial metagenomic analysis was used to study the composition of microflora of various taxonomic groups in the chyme of industrial pigs. Classical microbiological research methods were used to isolate the dominant representatives of the genus Lactobacillus.

Two glorious anniversaries at the Timiryazev Academy: to the 120th anniversaries of D.D. Ivanenko and E.N. Gapon

Submitted by Гость (not verified) on Wed, 09/04/2024 - 23:08

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The article is dedicated to the memory of two Soviet professors of the Timiryazev Academy, theoretical physicist Dmitry D. Ivanenko and physical chemist Evgeniy N. Gapon, who proposed the neutron-proton model of the atomic nucleus structure. The formation of outstanding scientists as researchers and teachers is shown. The contribution of D.D. Ivanenko and E.N. Gapon to the development of nuclear physics is described.

Role of entomophages of the classes Coleoptera, Coccinellidae, Diptera and Syrphidae in the population regulation of Acizzia jamatonica (Kuwayama, 1908) in the Central zone of Krasnodar krai

Submitted by Гость (not verified) on Wed, 09/04/2024 - 23:08

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Acizzia jamatonica (Kuwayama, 1908) is one of the most dangerous pests of Albizia julibrissin Durazz., 1772. A high pest population can lead to defoliation and death of the plant, and growing in forested areas makes it impossible to use chemical methods to protect the plant from Acizzia jamatonica (Kuwayama, 1908). the aim of this work was to study the species composition of predatory insects occurring in plantings of Albizia julibrissin Durazz., 1772 and to evaluate their regulatory activity against Acizzia jamatonica (Kuwayama, 1908).

Microclonal reproduction of Digitalis purpurea L. And adaptation of regenerants in hydroponics

Submitted by Гость (not verified) on Wed, 09/04/2024 - 23:08

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The paper presents the results of the development of the microclonal propagation technology of Digitalis purpurea L. with plant adaptation in hydroponic Ebb and Flow Systems. It has been found that MS and WPM growth media with a full and reduced content of mineral salts supplemented with 6-BAP cytokinines, 2-iP and auxins of indoleacetic acid, isobutyric acid in various concentrations can be highly efficient for in vitro cultivation of the plants.

Morphological and anatomical adaptations of leaves of the Kuban-86 clonal rootstock in the conditions of Dagestan

Submitted by Гость (not verified) on Wed, 09/04/2024 - 23:08

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The article discusses the anatomical structure of the leaf blade and petiole of plants of the clonal rootstock of the apple tree Kuban-86 (AP-1) depending on their growth at different altitudes of mountainous Dagestan and under urban conditions. The paratypical nature of the occurrence in an ecological-genetic experiment with clonal plants within the reaction norm is substantiated. The relationship of adaptive changes with plant growth conditions and the location of leaf attachment in the crown (sunny or shady side) is analysed, and labile and stable characteristics are identified.

Technological transformation of reindeer husbandry in the Arctic Zone of Russia

Effect of meteorological conditions on the oil content of sunflower in the conditions of the Lower Volga region

Dynamics of genetic changes in sires according to their daughters’ milk productivity in the pale dairy cattle population

Analysis, isolation and identification of the microbiome from the ceca of the intestines of industrial pigs

Two glorious anniversaries at the Timiryazev Academy: to the 120th anniversaries of D.D. Ivanenko and E.N. Gapon

Role of entomophages of the classes Coleoptera, Coccinellidae, Diptera and Syrphidae in the population regulation of Acizzia jamatonica (Kuwayama, 1908) in the Central zone of Krasnodar krai

Microclonal reproduction of Digitalis purpurea L. And adaptation of regenerants in hydroponics

Morphological and anatomical adaptations of leaves of the Kuban-86 clonal rootstock in the conditions of Dagestan

Известия Тимирязевской сельскохозяйственной академии. 4 / 2024

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