Zoology

In our country, new innovative methods of obtaining even more products from rabbits in the meat-skin direction are described, which, using the broad opportunities aimed at rabbit breeding wisely, will improve the importance of rabbits in agriculture, increase their productivity, and correctly establish the conditions for keeping rabbit breeds in the meat-skin direction.

The aim of the research is to improve the quality of wool, to clean up contaminated wool, to improve the resource-saving technology, to create a technical device for the primary processing of wool, to theoretically and experimentally substantiate its main parameters, the harvested wool in personal plots, many specialized cross-breeding and livestock farms located in different regions and climatic conditions of Uzbekistan.
Scientific novelty of the research is a follows:
The physico-chemical and mechanical properties of the wool, as well as the factors acting on them, are determined;
The device for the primary cleaning of the clogged coarse wool was designed, the constructive scheme of the table for classifying and sorting the wool: regularities of change of qualitative and power indicators of work of the device depending on operating modes and basic parameters of working bodies are established.

Cholesterol and its derivatives are used in the production of liquid crystals, in pharmacology as a component of dosage forms and
diagnostic tools, as a precursor to steroid drugs. Cholesterol in the composition of the cell plasma membrane plays the role of a bilayer
modifier, giving it a certain stiffness due to an increase in the density of the "packing" of phospholipid molecules. In this work, an improvement is made in the technology for producing cholesterol from biological material

In this article, the history of the study of rabbit eimeria and the scientific research works of scientists who have been active in the promotion of this disease have been analyzed, focusing on some of the oocysts that cause the disease, giving detailed information about them.

In this article, the history and systematic status of the study of paramphistomatoses is described based on literature data

This article presents the results of caprological detection of eimeria in rabbits and hematological examination of blood samples of infected rabbits before treatment and after administration of Intracox oral and Coxitox preparations.

Growing rabbit meat and rabbit breeding in Uzbekistan, the results of the work carried out in this direction. About the work carried out to meet the population's need for meat and meat products.

The article describes the growth dynamics of hybrid rabbits obtained from the crossing of Californian and local breeds. The average age of 44 female rabbits was 210 days. The average weight of the experimental rabbits was 4173.3±17.1 g. compared to the age of 180 days, it was 239.7g more (R>0.99).

In our country, rabbit and poultry farms are increasing every year. For this reason, there is a need for granulators for complete and proper feeding of animals. Based on this, research is being conducted to develop small-scale granulators for the development of rabbit and poultry farming.

The article deals with ethnic groups living in
Ferghana Valley, their life, occupation, types of cattle breeding and the convenience of territories for different types of agriculture for the population.It also provides information about the history of animal husbandry in the Kokand Khanate, the ethnic composition in the Khanate
of the studied period, i.e., the end of the XIX century – the beginning of the XX century, the types of cattle breeding and the role of hilly areas in the economic life of the population. Comments are given on professions related to
cattle breeding, i.e. about tanners, about artisans of shoemaking, the methods of manufacturing leather products are highlighted.

The article talks about the fertility of hybrids bred by crossing domestic rabbits with California rabbits, the viability and milk production of their offspring.

In the article, fattening ofSimmental breed bulls, which lag behind the growth of the experiment, from 15 months to 18 years of age, group 1 bulls received an average of 8.4 kg of feed units, 116.5 MDj of exchangeable energy, 13.12 kg of dry matter, 1154 g of digestible protein, 82.4 g Ca, with a ration of 73.7 g P, compared to the control group I, the bulls of the second group had 12.5%, 14°/o MDj exchangeable energy, 18% dry matter, 8% Ca, P 3, If there was an excess of 6%, the bulls of the experimental group III compared to the bulls of the control group I had 22.5% food units, 5.4%> MDj exchangeable energy, 19.9% dry matter, 7.9% digestible protein, it was too much.

Concentrated feeds for California and other breeds of rabbits include grain from legumes and spikes, oilseeds, combicorns, and processed foods from legumes, succulents, and roughage. These feeds are rich in energy, protein, and minerals, and they are considered cheap and effective in feeding rabbits, and provide additional benefits to producers.

During 305 days of lactation, cows with milk-meat, external body structure consumed an average of 4773.9 kg of feed units, 6150.04 kg of EOB, 6054 kg of dry matter, and 694.6 kg of digestible protein, -milk by 145.6 kg or 3.03% by average feed unit, by 189.2 kg or 3.08% by EOB, by 195.8 kg by dry matter compared to cows with external body structure or 3.28%, digestible protein was 24.4 kg or 3.51% more

The work examined the possibilities of using the yellow form of biomass of the Aral microalgae Dunaliella salina as a feed additive for laying hens of the Loman Brown meat and egg breed. It was shown that adding Dunaliella biomass to the diet of laying hens increases their live weight by 51-62 g each and egg production chickens (by 3.6-4.2%). At the same time, the feed additive based on the microalgae Dunaliella salina has no toxic effect and does not have a negative effect.

The aim of the research work identification of the mite species composition of the Argasidae family, the ecology and life cycles of the dominant species, as well as the biological activity of the salivary gland secrets of the argasid mites, and the development of improved measures to control mites in the conditions of Southern Uzbekistan.
Scientific novelty of the research is as follows:
features of the landscape distribution of mites from the genera Argas and Ornithodoros in the ecosystems of Southern Uzbekistan;
specific features of the formation and adaptation of the parasitic system "argasids - vertebrates";
the peculiarities of respiration of Argasidae mites are revealed depending on air temperature;
biologically active substances from the secretions of the salivary glands of argasid miteswere extracted and their toxic properties arc determined;
the relaxant and anticoagulant effect of biologically active compounds from the secretions of salivary glands on the circulatory system of animals were confirmed.

The article provides a literature review of protein feeding of various physiological groups of rabbits, focusing on young animals up to 3 months. When feeding rabbits, it is very important to take into account the presence of all nutrients in the diet such as: dry matter and exchange energy of feed and diet, protein, carbohydrates, minerals and vitamins. At the same time, it is very important to ensure balanced feeding of young rabbits, focusing on the need to primarily take into account protein in the diet. To achieve optimal feeding rates for all categories of rabbits, it is necessary to include in the diets feed and feed additives rich in protein that promote the health and growth of young animals.

The of the research work was to study the fauna and bio-ecology of ticks of the genus Hyalomma in the southern regions of Uzbekistan, the toxic properties of the secretion of the salivary glands, the mechanisms of physiological action of the biologically active substances isolated from them, as well as the improvement of methods for fighting ticks.
Scientific novelty of the research is as follows:
There arc 6 species of Hyalomma ticks in the ecosystems of Uzbekistan - H. dromedarii, H. asiaticum, H. detritum, H. ssupense, H anatolicum, H. plumbeum, their ecological features, current and seasonal activity;
The present state of distribution of these ticks in landscapes and biotopes is revealed;
The constituents of secretion of salivary gland of some species of ticks, its toxic properties and physiological activity were studied;
The enzymatic composition of the saliva of H. asiaticum ticks -phospholipase A - 0.29 мто! / min.mg, protease - 0.07 мто! / min. the amount of protein was 75-80 %. The toxic properties arc reliably revealed;
It has been established that some fractions of the secretion of the salivary gland exhibit an anticoagulant and relaxant effect.

The aim of the study is an ecological analysis and identification of the main directions of the morpho-ecological adaptation and fodder specialization and ecological classification of the aphids of Eastern Fergana.
I he object of the study is the fauna of aphids and the afidocomplexes of intensive gardens in Eastern Fergana.
The scientific novelty of the study is as follows:
for the first time, a taxonomic catalog of aphids of 200 species and 4 subspecies of Eastern Fergana belonging to 76 genera and 7 families was compiled, including 1 new species (Callipterinella ferganica Akhmedov et Khusanov) and 1 subspecies (Euceraphis pilosa arslanbobica Akhmedov et Khusanov) for science, 1 genus (Callipterinella) and 67 species for fauna;
the presence of aphids in peach leaves - a new food plant - Cerasus awium and Cerasus mahaleb;
specific features of the specialization of aphids of Eastern Fergana to the fodder plant in the "parasite-host" system were determined;
morphological and ecological orientations of the aphids of Eastern Fergana in the "parasite-host" system have been determined;
on the basis of the phenomenon of transgression, the parameters of ecological niches of ecologically similar species arc revealed;
species composition of ethnofauna of intensive apple orchards and stages of formation of ethnocomplexes are determined;
the degree of economic damage to aphids, as well as the degree of effectiveness of entomophages, is proved;
improved methods of combating orthoptcran-proboscis insects of intensive apple orchards.
. Implementation of the research results. On the basis of scientific results on the fauna of the aphids of Eastern Fergana and its morpho-ecological properties:
practical recommendations on the organization of measures to protect against pests of intensive apple orchards, which enable to grow ecologically clean products, are introduced into the practice of intensive apple orchards and forestry. (Certificate of the Ministry of Agriculture and Water Resources 02/20-449 of September 7, 2017). The results contribute to a sharp reduction in the use of pesticides and increased yields.
Ethnomo complexes of intensive apple orchards in Eastern Fergana, the features of the formation of agrocenoses, protecting apple orchards from orthopteran-trunk insects have been introduced into the State Plant Quarantine Inspectorate (Reference 50-04-759 of the State Plant Quarantine Inspection dated October 5, 2017). The results contributed to the prevention of foreign penetration and spread of dangerous aphid species on the territory of the Republic, as well as the use of complex methods of combating them.
Structure and volume of the dissertation. The structure of the dissertation consists of an introduction, five chapters, conclusion, a list of used literature and applications. The volume of the thesis is 110 pages.

Abstract: Little variation was observed between the body sizes of the cows in the experiment. For example, the fat height of cows in experimental groups I and II was 3.3 cm or 2.5% (P<0.05) and 7.8 cm or 5.7% (P<0, 05), wither height by 2.5 cm orl.8%> (P< 0.05) and 5.4 cm or by 3.8% (P<0.05), chest width by 1.8 cm or 2, 93% (P<0.01) and 2.2 cm or 4.2% (P<0.05), breast depth 1.2 cm or 1.7% ( P<0.01) and 2.7 cm or by 3.7% (P<0.01), chest circumference by 3.9 cm or 1.9% (P<0.01) and by 5.4 cm or 2.6% (P< 0.05), the oblique length of the body by 0.8 cm or 0.5% (P<0.01) and 2.6 cm or 1.7% (P<0.05), the width of the hind femur by 0.7 cm or 1.9% (P<0.05) and 1.8 cm or 3.4% ( P<0.05) and leg circumference 0.2 cm or 0.9% and 1.6 cm or 6.9%.

In this article, information on the epizootology of Eimeria, an invasive disease of rabbits, is presented, the course of clinical symptoms and the origin of the disease are briefly explained.

The scientific article presents the results of scientific research on the epizootology of eimeria, spread and effectiveness of eimeriostatic drugs in the treatment of the disease, which is a widespread invasive disease that causes great economic damage to rabbit farms.

The results of research on the epizootiology of rabbit eimeriosis the effectiveness of eimeriostatic drugs in the treatment of the disease are presented.

It is known that up to 70% of feed costs in the poultry industry are accounted for by cereal crops, including wheat, barley and corn. These cereals are essential in the sphere of feeding the population and occupy the main position among food crops. The search for new types of grain fodder to partially replace traditional and use them to maintain and increase the productivity of poultry is urgent.

Bugungi kunda global miqyosda aholini sog'lomlashtirish, kasalliklarning oldini olish va salomatlikni mustahkamlash davlat siyosatining ustuvor yo'nalishlaridan biri hisoblanadi. Ayniqsa, yod tanqisligi bilan bog'liq kasalliklar, jumladan, endemik buqoq inson salomatligiga jiddiy tahdid solayotgan muhim muammolardan biri bo'lib qolmoqda. Jahon sog'liqni saqlash tashkiloti (JSST) ma'lumotlariga ko'ra, dunyo bo'yicha qariyb 2 milliardga yaqin inson yod tanqisligidan aziyat chekmoqda, shundan 750 milliondan ortig'i turli darajadagi qalqonsimon bez kasalliklariga chalingan va bu holat aqliy rivojlanishga, qalqonsimon bez faoliyatiga hamda umumiy salomatlikka salbiy ta’sir ko'rsatmoqda Ayniqsa, bolalar va homilador ayollar orasida bu muammo dolzarb bo'lib qolmoqda.