The growth, development and meat qualities characteristics of different genotypes lambs

Iovenko, V. M.; Hladii, I. A.

doi:10.31521/2313-092x/2021-1(109)-9

Cited by 4 publications

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“…В окремих випадках гриби роду Malassezia можуть вступати в симбіотичні взаємовідносини з іншими мікроорганізмами. Так, доведено, що стафілококи і маласезії виділяють ліпази, здатні змінювати баланс секрету сальних залоз; ріст дріжджових грибів цього роду, у присутності стафілококів, in vitro покращується; пригнічення росту одного з мікроорганізмів не впливало на ріст іншого тощо (Stotska, 2022;Iovenko et al, 2023).…”

Section: результати та їх обговоренняunclassified

“…Отит, причиною якого є дріжджові гриби Malassezia, здебільшого, клінічно характеризується виділенням із зовнішнього слухового проходу значної кількості гнійного запального ексудату рідкої або густуватої консистенції жовтувато-коричневого кольору з неприємним запахом. Відзначається, що у більшості випадків у тварин був зуд (Iovenko et al, 2023).…”

Section: результати та їх обговоренняunclassified

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Otitis externa in dogs (prevalence, etiology, clinical course, and treatment regimens)

Datsiuk,

Hunchak,

Gutyj

et al. 2024

SMLNUVMB

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Otitis externa is a reasonably common problem in dogs. The most difficult is the treatment of recurrent chronic otitis media. After all, otitis externa in dogs is a polyetiological disease; therefore, to prescribe effective treatment, the doctor needs to identify the primary cause and take it under control, as well as identify and eliminate secondary infections and develop a prevention plan following predisposing factors. That is why a detailed analysis of the scientific literature on the distribution, etiology, clinical course, and scheme of treatment of dogs with the development of otitis externa was made. To ensure the accuracy and speed of diagnosis of otitis externa, it is promising to develop a diagnostic algorithm that will help the general practitioner clearly understand the etiological factors and eliminate them or take them under control. Many researchers have confirmed that otitis is characterized by seasonality (18.6 % occurs in summer, 30.2 % in autumn, 15.6 % in winter, and 35.6 % in spring). Depending on otitis's etiology in small domestic animals, microorganisms, fungi, and mites are decisive. According to the reports of some authors, otitis externa can be secondary; that is, the etiology of such pathology is already an infection (Staphylococcus and Pseudomonas bacteria, Malassezia yeast). Clinically, otitis externa in dogs, as a rule, is manifested by characteristic symptoms, while the existing peculiarities of the course are, in most cases, determined by etiological factors. In most cases, otitis externa is treated locally with drugs applied directly to the ear. Most of these products contain different ingredients that are active against bacteria, yeast, and inflammation at the same time. There are several remedies for the treatment of otitis externa at the veterinarian's choice, which require different treatment regimens. Recently, the practice of veterinary medicine has increasingly included complex drugs that, on the one hand, are effective in the treatment of otitis and, on the other hand, are safe for the animal body. Such drugs, as a rule, should show, at the same time, anti-inflammatory, anti-parasitic, anti-allergic, analgesic, immunomodulating, and other types of action. Because of this, the search and development of new drugs in the system of comprehensive measures for the prevention and treatment of inflammation of the external ear is relevant and promising.

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Section: результати та їх обговоренняunclassified

Otitis externa in dogs (prevalence, etiology, clinical course, and treatment regimens)

Datsiuk,

Hunchak,

Gutyj

et al. 2024

SMLNUVMB

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“…For example, according to statistical data, cardiovascular diseases in humans are among the most common diseases of noncommunicable etiology and are the leading cause of mortality. These diseases also occur in domestic productive and carnivorous animals (Thiriet, 2019;Vatnikov et al, 2019;Iovenko & Hladii, 2021).…”

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confidence: 99%

Morphometric parameters of the heart of domestic sheep Ovis aries L., 1758

Ragulya,

Goralskyi,

Sokulskyi

et al. 2024

Ukr. Jour. of Vet. and Agr. Sci.

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The cardiovascular system is one of the most critical animal systems. Its main functions are to supply organs and tissues with oxygen and nutrients and to remove metabolic products from tissues. Diseases of the cardiovascular system of animals cause significant economic damage, including reduced productivity, reproductive qualities, and the development of concomitant diseases. The prevention, diagnosis, surgery, and treatment of such pathologies are only possible by knowing the morphofunctional parameters of comparative anatomy, histology, and physiology. The heart plays a vital role in blood circulation and regulates the proper functioning and development of all organs of animal and human organisms. The study of the heart structure reveals topography features, age-related morphology, and development of this organ in domestic animals and remains relevant. The article is a fragment of the scientific developments of the Department of Normal and Pathological Morphology, Hygiene and Forensics of Polissia National University on the following topics: “Features of the morphology of the heart of domestic mammals” (state registration number 0121U108884); “Development, morphology and histochemistry of animal organs in normal and pathological conditions”, state registration number 0113U000900. In the study, sexually mature clinically healthy animals (n = 5) belonging to the class Mammalia – Mammals, species Ovis aries L., 1758 – domestic sheep (ram) were investigated. The study aimed to evaluate the morphological structures of the heart of mature sheep using macro- and microscopic, morphometric, and statistical research methods. The heart of a sexually mature domestic sheep was subjected to anatomical dissection. Sections were stained with hematoxylin and eosin to study the cyto- and histoarchitectonics of the heart for microscopic examination of transverse striated myocardial muscle tissue, detection of cardiomyocyte cytostructure, and Heidenhain staining of histological specimens were used. The morphology of the heart in sheep has a similar organization plan, topographic location of the organ, and anatomical and histological structure. However, there are some striking species and morphological features. The heart of the domestic sheep belongs to the expanded-shortened anatomical type (according to its development index – 145.5 ± 4.02 %). According to the studies, the absolute and relative weight of the heart of mature sheep is, accordingly, 208.4 ± 9.82 g and 0.44 ± 0.007 %, and the weight without epicardial fat is 175.0 ± 8.17 g. It has been shown that the microscopic structure of the ventricles and atria of the sheep heart differ in cytometric parameters. Cardiomyocytes of the left ventricle have the most significant volume (3982.99 ± 423.96 μm3), the smaller – of the right ventricle (2463.02 ± 318.04 μm3). The lowest index was observed in atrial cardiomyocytes (1215.93 ± 176.94 μm3). The volumes of cardiomyocyte nuclei in the left ventricle were (53.42 ± 5.18 μm3) and in the right ventricle (52.85 ± 4.33 μm3). The volume of atrial nuclei (50.16 ± 4.57 μm3) is almost the same. Such ambiguous morphometric parameters of cardiomyocytes and their nuclei volumes are directly reflected in their nuclear-cytoplasmic ratio, which is the smallest in cardiomyocytes of the left ventricle (0.0136 ± 0.0062), larger in cardiomyocytes of the right ventricle (0.0219 ± 0.0079) and the largest (0.0430 ± 0.0096) in atrial cardiomyocytes. The obtained results of the study of the macro- and microscopic structure of the heart of domestic sheep significantly supplement the information on heart morphology in the relevant sections of comparative anatomy and histology and are a significant contribution to clinical cardiology.

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Swine`s Raiting by Evaluation and Selection Indexes

Ushakova

Levchenko

2023

STBIAS

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An increase in the productivity of animals is associated with a general improvement of the population, which largely depends on the accuracy of the genotype assessment. The most accurate estimates can be obtained with the help of modern indices: evaluation and selection. At the same time, it is important to calculate the weight coefficients of the traits included in the selection index structure, separately for each herd (breed). Evaluation by indices allows selecting the best animals in the herd for further use. According to the results of the evaluation of the reproductive qualities of sows in crossbreeding using evaluation and selection indices, the superiority of large white breed sows covered with boars of the landrace breed was established, and the lowest among pigs of the combinations ♀P×♂D and ♀D×♂P. At the stage of studying the growth dynamics of pigs, we studied the patterns of individual development of animals in ontogenesis according to criteria that would characterize growth indicators and allow us to determine the type of their formation. Animals of the ♀D×♂P group outperformed their counterparts and other experimental groups. Animals of the ♀P×♂D and ♀D×♂P groups had the highest index of growth uniformity. At the same time, the control group and the combination ♀VB×♂L were inferior to them. The superiority of pigs in terms of growth intensity of the ♀D×♂P group shows the high energy of the formation of animals, they reached slaughter conditions faster under the same conditions of keeping and feeding compared to other groups. Animals of the combination ♀P×♂D were characterized by the most uniform growth at this stage. During the fattening period, the superiority of the offspring of the combination ♀D×♂P in terms of the index of fattening qualities was preserved. In order to select highly productive individuals, for further use in crossbreeding, we calculated selection indices for evaluating gilts by reproductive capacity, for evaluating the fattening and fattening and meat qualities of the offspring. Keywords: selection index, evaluation index, selection, crossbreeding, Landrace, Duroc, Pietren, Large White breed, pigs.

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The growth, development and meat qualities characteristics of different genotypes lambs

Cited by 4 publications

References 0 publications

Otitis externa in dogs (prevalence, etiology, clinical course, and treatment regimens)

Otitis externa in dogs (prevalence, etiology, clinical course, and treatment regimens)

Morphometric parameters of the heart of domestic sheep Ovis aries L., 1758

Swine`s Raiting by Evaluation and Selection Indexes

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