L. Yu. Karpenko
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View article: Physiological justification for the use of leukocyte indices in assessing the health status in ferrets
Physiological justification for the use of leukocyte indices in assessing the health status in ferrets Open
Despite its relatively widespread, many physiological parameters, including blood, in ferrets still need to be studied. Leukocyte indices are calculated values obtained on the basis of leukogram values. As a rule, they are not a direct ind…
View article: Features of antimuller hormone concentration and biochemical parameters of blood of donor cows in the follicular phase of the reproductive cycle
Features of antimuller hormone concentration and biochemical parameters of blood of donor cows in the follicular phase of the reproductive cycle Open
Determining the follicular phase of the estrous cycle is a critical task for successful artificial insemination, embryo transplantation, and egg washing in cows. The existing methods for determining this period are not ideal and have a num…
View article: The immunological status of broiler chickens against the background of the use of polysaccharide fraction of brown algae
The immunological status of broiler chickens against the background of the use of polysaccharide fraction of brown algae Open
Poultry farming in Russia is developing rapidly. The ability to obtain high-quality products for a minimum period of fattening of farm birds guarantees the country's food security and puts this industry in priority compared to other subsec…
View article: Influence of fucus algae on milk quality and cow productivity
Influence of fucus algae on milk quality and cow productivity Open
Increasing the productivity of farm animals without harming their health is one of the most important tasks of modern animal husbandry. One of the solutions is the use of feed additives that can compensate for the deficiency of nutrients a…
View article: Investigation of biochemical parameters of rainbow trout against the background of the use of probiotic drugs
Investigation of biochemical parameters of rainbow trout against the background of the use of probiotic drugs Open
In highly productive fish farming, antibiotics are still the only way to prevent and treat infectious diseases. The use of antibiotics is not always rational, often accompanied by the formation of multiple drug resistance in pathogens, aff…
View article: Assessment of hematological parameters of rainbow trout when probiotic preparations are introduced into the diet
Assessment of hematological parameters of rainbow trout when probiotic preparations are introduced into the diet Open
Increasing aquaculture production is an important condition for ensuring food security in Russia and promoting socio-economic development of the regions. Parasalmo mykiss or rainbow trout is one of the most popular objects of industrial fi…
View article: Morphological study of rat spleen after application of mineral feed additive based on chelate compounds
Morphological study of rat spleen after application of mineral feed additive based on chelate compounds Open
Purpose: Morphological study of the spleen of white laboratory rats of the Wistar line when adding a mineral supplement based on chelate compounds to the feed. Materials and methods. The experiments were conducted on white male laboratory …
View article: Age-related features of iron metabolism in hanoverian mares
Age-related features of iron metabolism in hanoverian mares Open
Purpose : to study age-related changes in iron metabolism indices in Hanoverian mares. Materials and methods. The study was conducted in the summer at a horse farm in the Tosnensky District of the Leningrad Region. For the study, 20 clinic…
View article: The State of poultry industry in Belarus at the present stage
The State of poultry industry in Belarus at the present stage Open
According to analysts, due to increased consumer demand, from the beginning of the 21st century, poultry production will increase many times by 2030. The planned regulated economy of Belarus, strict adherence to technological norms and rul…
View article: Morphological study of the liver of rats after the use of the mineral feed additive based on chelate compounds
Morphological study of the liver of rats after the use of the mineral feed additive based on chelate compounds Open
Purpose : a morphological study of the liver of white laboratory rats of the Wistar line supplemented with the mineral feed additive based on chelate compounds. Materials and methods . The experiment was carried out on male white Wistar la…
View article: The effect of organomineral chelate complexes on the content of chemical elements in fish muscle tissue
The effect of organomineral chelate complexes on the content of chemical elements in fish muscle tissue Open
The nutritional value of fish depends on the conditions of keeping and feeding. Rational feeding should meet the needs of fish in organic and mineral components. The enrichment of fish diets with minerals rationalizes economic activities i…
View article: Comparative analysis of the biochemical composition of rainbow trout blood serum under different feeding diets
Comparative analysis of the biochemical composition of rainbow trout blood serum under different feeding diets Open
Rational and efficient feeding of aquaculture objects is one of the foundations of production in highly productive fish farming. The aim of the study was to compare the composition of production compound feeds for aquaculture objects and t…
View article: Study of the biochemical status of calves in the early postnatal period in connection with dyspepsia
Study of the biochemical status of calves in the early postnatal period in connection with dyspepsia Open
Purpose: to study changes in the most important metabolic parameters in case of dyspepsia in calves. Materials and methods. Two groups of calves of 8 heads each, aged from 6 to 14 days, were formed. The first group included calves with sig…
View article: Age dynamics of morphological parameters of blood in mares of Hanoverian breed in the conditions of the North-West Region of the Russian Federation
Age dynamics of morphological parameters of blood in mares of Hanoverian breed in the conditions of the North-West Region of the Russian Federation Open
The Hanoverian breed is one of the promising breeds of sport horse breeding. A quick and accurate assessment of the condition of the body of a sport horse is one of the factors for the success of its sport career. In this study, we conduct…
View article: Seasonal dynamics of indicators of mineral metabolism in horses in the conditions of the Leningrad region
Seasonal dynamics of indicators of mineral metabolism in horses in the conditions of the Leningrad region Open
The article analyzes the seasonal dynamics of mineral metabolism indicators in adult horses kept in private stables in the Leningrad region. As a result of the research, knowledge of the concentration and dependence of indicators on the se…
View article: Leukocyte indices in dogs with acquired primary hypothyroidism
Leukocyte indices in dogs with acquired primary hypothyroidism Open
According to global statistics, hypothyroidism in dogs is a widespread disease. However, due to certain difficulties in conducting laboratory diagnostics, as well as the cross-species specificity of such indicators as thyroid-stimulating h…
View article: The influence of the use of a feed additive based on <i>Fucus</i> algae from the White Sea on the hematological status of cows
The influence of the use of a feed additive based on <i>Fucus</i> algae from the White Sea on the hematological status of cows Open
In industrial production, it is extremely important to pay attention to the quality of daily diets and living conditions of animals. This is especially worth considering when working with highly productive animals, whose immune status may …
View article: The influence of the use of a feed additive based on fucus algae of the White Sea on some indicators of mineral and electrolyte metabolism of cows
The influence of the use of a feed additive based on fucus algae of the White Sea on some indicators of mineral and electrolyte metabolism of cows Open
Mineral and electrolyte metabolism are of particular importance in dairy cows due to the peculiarities of their physiology, which becomes more relevant in conditions of high productivity. Milk production directly affects the state of miner…
View article: Assessment of etiological factors of hyperkalemia development in cats
Assessment of etiological factors of hyperkalemia development in cats Open
Hyperkalemia, or elevated potassium levels in the blood, can have a serious effect on the body. High potassium levels can be both a cause and a consequence of impaired cell function, including cells of the heart, nervous system, muscles an…
View article: Leukocyte indexes for liver lipidosis in cats
Leukocyte indexes for liver lipidosis in cats Open
Chronic liver failure is characterized by significant impairment of liver function due to exposure to a damaging factor for a long time. In cats, one of the most common liver diseases is lipidosis, or fatty liver dystrophy – a condition in…
View article: The effect of an organomineral chelate complex on the reproductive function of females and the survival of <i>DANIO RERIO</i> eggs
The effect of an organomineral chelate complex on the reproductive function of females and the survival of <i>DANIO RERIO</i> eggs Open
Danio rerio is a popular model organism used in various fields of scientific research, including aquaculture. The use of Danio rerio in toxicological studies of drugs promising for use in aquaculture allows reducing the cost of livestock o…
View article: Comparative analysis of intestinal intestinal microflora of rainbow trout selected from various fish farms of the republic Karelia
Comparative analysis of intestinal intestinal microflora of rainbow trout selected from various fish farms of the republic Karelia Open
The microbiocenosis of the intestines of fish is represented by the abdominal and parietal microflora, which has complex functional connections with each other and with the intestinal wall. The purpose of the study was to identify the feat…
View article: Dehorionization of <i>DANIO RERIO</i> embryos to assess the acute toxicity of organomineral chelate complexes
Dehorionization of <i>DANIO RERIO</i> embryos to assess the acute toxicity of organomineral chelate complexes Open
One of the main issues when working with fish embryos is the throughput of the chorion. It is believed that heavy metals can also be blocked by chorion. In the context of studying the acute toxicity of an organomineral chelate complex cont…
View article: Erythrocyte indices changes analysis in dogs with sensitive digestion
Erythrocyte indices changes analysis in dogs with sensitive digestion Open
According to the literature, sensitive digestion in dogs is quite common. About 25% of visits to veterinary clinics are related to diseases of the gastrointestinal tract. Sensitive digestion is a feature of the gastrointestinal tract assoc…
View article: Assessment of acute toxicity of the organomineral chelate complex for Danio rerio embryos
Assessment of acute toxicity of the organomineral chelate complex for Danio rerio embryos Open
The work evaluates the acute toxicity of the organomineral chelate complex for Danio rerio embryos. To date, very few studies have been presented on the mineral component of diets in aquaculture.Currently, a number of preparations (supplem…
View article: Analysis of the use of ready-made Expert hepatic diets for adult cats liver care company Miratorg
Analysis of the use of ready-made Expert hepatic diets for adult cats liver care company Miratorg Open
This work is devoted to studying the effect of Expert Hepatic ready-made diets for adult cats liver care company MIRATORG on cats in the complex therapy of hepatopathy. An important component in the complex treatment of cats with liver dis…
View article: Assessment of the biochemical status of Parasalmo mykiss walbaum in trout farming conditions as a basis for the development of a natural adaptogen based on green microalgae
Assessment of the biochemical status of Parasalmo mykiss walbaum in trout farming conditions as a basis for the development of a natural adaptogen based on green microalgae Open
Increasing the output of aquaculture products is an important condition for supporting food security in Russia and ensuring the socio-economic development of the regions. One of the key factors for the sustainable functioning of trout farm…
View article: Analysis of the age dynamics of morphological parameters of rainbow trout blood in aquaculture conditions
Analysis of the age dynamics of morphological parameters of rainbow trout blood in aquaculture conditions Open
Rainbow trout (Parasalmo mykiss) is a promising type of aquaculture with one of the largest production potentials in Russia. The Republic of Karelia currently holds a leading position in cage trout farming, supplying more than 80% of comme…
View article: Prospects for the use of brown algae as a natural adaptogen
Prospects for the use of brown algae as a natural adaptogen Open
One of the most important trends in the development of modern agriculture is the policy of replacing or completely replacing antibiotics and chemical antimicrobial agents in animal diets. An alternative to feed antibiotics is a complex of …
View article: Statistical assessment of the concentration of anti-Muller hormone and biochemical parameters of the blood of donor cows in the luteal phase of the cycle
Statistical assessment of the concentration of anti-Muller hormone and biochemical parameters of the blood of donor cows in the luteal phase of the cycle Open
Increasing the productivity of cows in the modern world is a key aspect of animal husbandry. Embryo transplantation in cows makes it possible to increase the production of genetically valuable animals and improve the breeding qualities of …