Reproductive qualities of gilts of different breeds

Shostya, A. M.; Stupar, I. I.; Усенко, С. О.; Бондаренко, Олена Миколаївна; Tsybenko, V. G.; Chuhlib, E. V.; Slynko, V. G.

doi:10.31890/vttp.2019.03.31

Cited by 6 publications

(5 citation statements)

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“…During estrus, in parallel with the increase in the concentration of estradiol-17β and thyroid hormones, the level of CSO, SOD, the amount of DC and TBA-active complexes increased, but the content of reduced glutathione decreased, which indi-cates a tense metabolic process and regulatory function of reactive oxygen form (Villamor et al, 2019). With increasing growth of pregnancy, the concentrations of progesterone and estradiol-17β significantly increased, which caused a change in the balance in the functional activity of prooxidant and antioxidant enzymes, which is consistent with the statements of K. Duhig (Duhig et al, 2016), S. O. Ogbodo (Ogbodo et al, 2014), M. S. Purdey (Purdey et al, 2015). With the formation of individual organs and systems of the fetuses and the emergence of its own synthesis of certain hormones in the mother's body there was a slowdown in peroxidation processes -reducing functional activity of SOD, CT and the content of DC and TBA-active complexes.…”

Section: Discussionsupporting

confidence: 80%

“…With the formation of individual organs and systems of the fetuses and the emergence of its own synthesis of certain hormones in the mother's body there was a slowdown in peroxidation processes -reducing functional activity of SOD, CT and the content of DC and TBA-active complexes. However, the prenatal period was characterized by a significant maximum level of sex hormones and an intensive course of lipid peroxidation, which is confirmed by V. N. Romanenko andI. A. Boiko (Romanenko &Boiko, 2015), D. N. Mitarev (Mitarev, 2009).…”

Section: Discussionmentioning

confidence: 72%

“…The state of prooxidant-antioxidant homeostasis (PAG) in blood was studied by the activity of xanthine oxidase (CSO) (Kyseliova et al, 2005), the concentration of diene conjugates (DC) (Havrilov & Melkorudnaya, 1983), the content of TB compounds (Kaidashev, 1996). The level of antioxidant protection was assessed by the activity of superoxide dismutase (SOD) (Brusov et al, 1976), catalase activity (CT) (Velichko et al, 2009), the content of reduced glutathione (Shabunin, 2010), ascorbic and dehydroascorbic acids(ADAA ) (Kaidashev, 1996), the content of vitamin A and vitamin E (Rybalko, 2005).…”

Section: Methodsmentioning

confidence: 99%

“…It has been found that AFO plays a leading role in ensuring motility, sperm survival and egg maturation (Purdey et al, 2015). With the onset of pregnancy, the mother's body is under the influence of oxidative stress, the prolonged action of which is accompanied by disruption of the development of the placenta, fetus and premature birth (Ogbodo et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Hormonal regulation of prooxidant-antioxidant homeostasis in gilts

Stoyanovskyy

Усенко

Shostya

et al. 2020

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

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The results of research on the features of cyclic lability of homeostasis in gilts are highlighted. In the experiments it has been used gilts of the Red White belted breed of meat pigs at different phases of the reproductive cycle: luteal phase, estrus, on the 15th, 20th, 30th, 60th, 90th, 104th, 113th day of pregnancy and in 12 hours after farrowing. The dynamics of the content of thyroid and steroid hormones, as well as the peculiarities of the formation of prooxidant-antioxidant homeostasis were determined in blood serum. It was found out that the amount of steroid hormones in blood of gilts is labile and is determined by the physiological state, namely the onset of estrus, relative to the luteal phase, it is increased the level of thyroxine (30.0 %), triiodothyronine (26.3 %), estradiol-17 β (by 22.8 %, P < 0.01) testosterone (15.2 %), as well as a decrease in progesterone (by 37.2 %). Such changes are accompanied by the acceleration of peroxidation processes, xanthine oxidase activity increases, it is increased the content of diene conjugates (P < 0.05) and TBA-active compounds. This is accompanied by a probable increase in the level of antioxidant protection – the activity of superoxide dismutase (P < 0.05), vitamin A (P < 0.05) and vitamin E (P < 0.05). During two months of pregnancy, the concentration of thyroxine (P < 0.05), triiodothyronine, progesterone (P < 0.01), testosterone (P < 0.05) and estradiol-17β increases. Such metabolic shifts cause changes in the state of prooxidant-antioxidant homeostasis in the direction of reducing the intensity of peroxidation processes. In gilts before farrow there is a decrease in thyrocoxin, triiodothyronine and progesterone. The intensification of peroxidation was found: the increase in SOD activity (P < 0.05), the dehydroascorbic acid content (P < 0.05), diene conjugates and TBA-active complexes, as well as the decrease in the concentration of reduced glutathione and vitamin A (P < 0.05) and vitamin E (P < 0.05). In blood of sows after farrowing, the concentration of thyroxine increases on 1.3 times, triiodothyronine – on 2.7 times, and progesterone and estradiol-17β decreases on 1.8 and 8.7 times, respectively. It was revealed that the intensity of lipid peroxidation processes decreased: DC content by 16.3 % and TBA-active complexes by 13.3%. It was determined that the concentration of ascorbic acid decreased by 32.8 % and vitamin E – 18.9 %.

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Section: Discussionsupporting

confidence: 80%

Section: Discussionmentioning

confidence: 72%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hormonal regulation of prooxidant-antioxidant homeostasis in gilts

Stoyanovskyy

Усенко

Shostya

et al. 2020

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

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“…Гормональній регуляції організму належить важливе місце в формуванні гомеостазу та реалізації спадкової програми у процесі індивідуального розвитку тварини. Тому останніми роками особливо зросла кількість досліджень, присвячених проблемам формування ендокринної системи у тварин і участі гормонів у процесах онтогенезу [2,6,7,9].…”

Section: вступunclassified

Циклічна Лабільність Гомеостазу У Свинок

Усенко¹

2019

visnyk

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Висвітлено результати досліджень щодо особливостей циклічної лабільності гомеостазу у сви-нок. В експериментах використано свинок миргородської породи на різних фазах відтворювального циклу: лютеальна фаза, еструс, на 15, 20, 30, 60, 90, 104, 113 доби поросності та через 12 годин після опоросу. У сироватці крові визначали динаміку вмісту тиреоїдних і стероїдних гормонів, а також особливості формування прооксидантно-антиоксидантного гомеостазу. Виявлено, що у крові свинок кількість стероїдних гормонів є лабільною та обумовлюється фізіологічним станом, а саме, при на-станні еструса відносно лютеальної фази підвищується рівень вмісту тироксину, трийодтироніну, естрадіолу-17β і тестостерону, а також зменшується рівень прогестерону. Такі зміни супрово-джуються прискоренням процесів пероксидного окиснення: зростає активність ксантиноксидази (р<0,05), підвищується вміст дієнових кон’югатів (р<0,05) та ТБК-активних сполук в 1,3 раза. Уп-родовж двох місяців поросності загальна концентрація тиреоїдних і стероїдних гормонів зростає. Такі метаболічні зрушення спричиняють зниження інтенсивності процесів пероксидації. Перед по-логами спостерігається зниження рівня тироксину, трийодтироніну і прогестерону. Встановлено інтенсифікацію пероксидації: збільшення активності КСО (р<0,05) і СОД (р<0,01), вмісту дегідро-аскорбінової кислоти, дієнових кон'югатів (р<0,05) та ТБК-активних комплексів, а також зниження концентрації відновленого глутатіону (р<0,01) та вітаміну Е. Виявлено, що після опоросу концент-рація тироксину в сироватці крові зростає, а прогестерону, тестостерону й естрадіолу-17β − зме-ншується. Відбувається зниження інтенсивності пероксидації ліпідів: зменшення вмісту ДК у 2,5 і ТБК-активних комплексів у 1,5 раза на тлі зниження кількості вітаміну А та вітаміну Е – 11 %. З’ясовано, що особливості циклічної лабільності гомеостазу у крові свинок визначаються фазами відтворювального циклу.

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Stages of Formation of a Network of General Secondary Education Institutions in a Rural Location of Ukraine

Osychenko,

Tyshkevysh

2023

MEC

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The study conducted a retrospective analysis of the genesis, formation and development of a general secondary education institutions network in rural areas of Ukraine. Taking into account the broad socio - cultural and political contexts, stages of rural schools network formation related to the emergence of a network (stage 1), its functioning (stage 2), transformation and consolidation of the existing network (stage 3) were revealed, development of the existing network at the expense of active development low -complex schools and schools with low -content classes (stage 4), new enlargement of the school network (stage 5). It is determined that the emergence of a rural schools network is related to democratic trends both by the totalitarian state and by the local initiative from below - by provincial and county zemstvos. And in the stages of formation of a schools network, dynamic and cyclical fluctuations from the democratic principles of formation from below and taking into account the interests of the population in formal administration by a totalitarian state are traced. The dependence of the formation of a schools network and its quality on the state policy on the formation of the system rural population and territorial-administrative reforms is established. The tendency of increasing enlargement of the schools network and cultural and household services in rural areas has been identified, which in turn leads to inequality of access to the services of rural and urban population and accordingly causes the outflow of the population from the villages. The need for more flexible planning of the network, taking into account local features, the need for individualization of approaches to the formation of networks in different territorial communities and regions, which can be facilitated in recent years by domestic scientists network models of integration, cooperation of educational institutions and complex training of various age groups. In order to achieve the goals of sustainable development of the country, it is necessary to form an effective network of pre -school and extracurricular education institutions, general secondary education, creating conditions for the possibility of learning throughout life. Keywords: school network, general secondary education institution, rural school, school building.

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Reproductive qualities of gilts of different breeds

Cited by 6 publications

References 0 publications

Hormonal regulation of prooxidant-antioxidant homeostasis in gilts

Hormonal regulation of prooxidant-antioxidant homeostasis in gilts

Циклічна Лабільність Гомеостазу У Свинок

Stages of Formation of a Network of General Secondary Education Institutions in a Rural Location of Ukraine

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