scholarly journals Functional properties of platelets in piglets when changing methods of nutrition

2020 ◽  
Vol 17 ◽  
pp. 00171
Author(s):  
Svetlana Yu. Zavalishina

A functionally significant element in ensuring homeostasis of the internal environment of an animal organism is platelets. The state of their activity greatly influences the rheology of blood in small vessels and, thus, the metabolism in tissues. It becomes clear that the process of growth and development of piglets at any age substantially depends on the level of their activity. In this regard, the assessment of agerelated changes in platelet activity in piglets during their early ontogenesis is of great importance. In the work performed, it was found that in piglets during the dairy and vegetable nutrition phase there is an increase in the adhesive, aggregation and secretory properties of platelets. The leading cause of these changes can be the enhancement of receptor processes and activation of the work of post-receptor mechanisms of information transfer in platelets. This is noted in piglets during the milk-plant nutrition phase simultaneously for both strong and weak aggregation inducers. The growth of platelet activity in piglets found during the observation period apparently was due to the intensification of thromboxane generation in platelets as a result of the increased activity of their cyclooxygenase and thromboxane synthetase, as well as an increase in the secretion of ADP molecules from them. The increase in the severity of the hemostatic properties of platelets in piglets during the milk-plant nutrition phase seems to be a serious regulator of their microcirculation and metabolism processes in any environmental conditions.

Author(s):  
S. Yu. Zavalishina ◽  
E. S. Tkacheva

A very important mechanism for maintaining homeostasis in the animal body is platelet hemostasis. The level of his activity very strongly determines the rheology of blood in the capillaries and due to this the state of metabolism in the tissues. There is reason to believe that the growth and development of piglets depends on the level of functional activity of platelets. For this reason, studies of the age-related dynamics of platelet activity in piglets at the end of early ontogenesis are of great importance. In the study, it was found that the piglets of plant nutrition showed an increase in the aggregation capacity of platelets (aggregation of their platelets was accelerated by ADP from 34.10.12 s to 27.60.12 s, with collagen from 24.70.08 s to 17.50.10 s, with thrombin from 36.50.08 s to 28.40.12 s). The main reason for this may be an intensification of the work of receptor and postreceptor mechanisms of platelets. This was characteristic of piglets during the phase of plant nutrition of early ontogenesis to the same extent with respect to strong and weak inducers of platelet aggregation. The increase in thromboxane synthesis in platelets (from 48.50.05% to 59.80.09%) was largely due to an increase in the activity of cyclooxygenase in them (from 78,40.06% to 89.80.12%) and thromboxane synthetase (from 69.20.07% to 81.50.07%) and activation of ADP secretion from them (from 46.00.13% to 56.90.15%). The increase in hemostatic activity of platelets in piglets during the phase of plant nutrition of early ontogeny should be considered an important regulator of their microcirculation and metabolism in tissues under existing conditions of existence.


2018 ◽  
Vol 11 (3) ◽  
pp. 1437-1442 ◽  
Author(s):  
Tkacheva E. S.

A very important mechanism for maintaining homeostasis in the animal body is platelet hemostasis. The level of his activity very strongly determines the rheology of blood in the capillaries and due to this the state of metabolism in the tissues. There is reason to believe that the growth and development of piglets depends on the level of functional activity of platelets. For this reason, studies of the age-related dynamics of platelet activity in piglets during early ontogeny are of great importance. In the study, it was established that piglets of milk and vegetal nutrition showed an increase in the adhesive, aggregation and secretory capacity of platelets. The main reason for this may be an intensification of the work of receptor and postreceptor mechanisms of platelets. This was characteristic of piglets during dairy and plant nutrition in the same degree with respect to strong and weak inducers of platelet aggregation. At the base of the revealed increase in the activity of platelets in piglets throughout the course of the observation, the increase in the synthesis of thromboxane in platelets was largely due to the increase in the activity of cyclooxygenase and thromboxane synthetase in them and activation of the secretion of ADP from them. The increase in hemostatic activity of platelets in piglets during the phase of milk and plant nutrition should be considered an important regulator of their microcirculation and metabolism in tissues under changing conditions of existence.


2020 ◽  
Vol 4 (1) ◽  
pp. 17
Author(s):  
Amirudin Wibowo

The increasing number of residents coming from outside Jabodetabek has resulted in increased activity in the Jabodetabek area. Generally newcomers are reluctant to have permanent housing but prefer semi-permanent buildings such as boarding houses, so that newcomers make boarding houses a flexible place to live. What must be considered in the selection of boarding houses in addition to the available prices and facilities is also because if newcomers want to find a boarding house must see the distance so they can estimate how much time the boarding house goes to the intended place such as campus or office harmed as well as environmental conditions so as to create a comfortable and peaceful atmosphere. Newcomers must be able to socialize with local residents so that harmony can be maintained, for example following a mutual cooperation activity held once a month to strengthen the relationship. One that makes it easier for newcomers to find a boarding house is to make a mobile android based application considering that it is quite fast in this modern era, the access can easily be done anywhere and whenever needed. The information needed is the name of the owner of the boarding house, room data. facilities, location and price..


Author(s):  
Farzaneh Sayfouri ◽  
Seyyed Amir Masoud Shahram Nia ◽  
Abbas Hatami ◽  
Seyyed Javad Emamjomeh Zadeh

Globalization and social development, as two independent and interactional discourses in this paper, have been investigated using the globalization indicators in two Khatami’s and Ahmadinejad’s administrations. Thus, the independent variable of globalization, and the dependent variable of the state of social development of Iran are compared in the two periods of 1997-2005 and 2005-2013 with the different approaches adopted in the two administrations. The research method is comparative. The research hypothesis is that based on valid statistics, both administrations have been on the path to social development, but Khatami's approach was based on global reformism, and Ahmadinejad's approach was based on indigenous and local thoughts. In terms of theoretical foundations, we have used the generalization model of political-social development. According to this model, development priorities are different in countries with different political and social contexts. Social globalization grew as much as 8.86 in the Khatami’s administration, and up to 4.89 in Ahmadinejad's administration. Therefore, the administration type is related to the extent of globalization, and globalization has contributed to the growth and development of social development. It also has provided a platform for the continuation of studies of this trend in a different way, with regard to the states and the internal environment of the countries.


2018 ◽  
Vol 35 (1) ◽  
pp. 211-216
Author(s):  
A. Chapagain ◽  
A. Khanal

Cucumber is the fourth most important vegetable crop worldwide favored for its edible fruit. Cucumber cannot be grown in the winter months due to its intolerance to cold and frost. An experiment was conducted in IAAS, Lamjung to test the effectiveness of various nursery raising conditions for achieving earlier harvest in spring. Three treatments viz. cold frame, hotbed, and open were selected and replicated 30 times each. Data on germination speed, germination percentage, true leaf initiation, plant height, tendril initiation, days to first flowering, days to harvesting, length and diameter of fruit and fruit yield were recorded. Hotbed achieved earlier germination (8 days) followed by cold frames (8.57 days) and open (12.73 days) respectively with cold frame having the highest germination percentage (98%) followed by a hotbed (96%) and open (90%). True leaf initiation was earlier in a cold frame (21.5 days), followed by hot bed (22.83 days) and open (30.97 days). Transplanting of cold frame and hotbed seedlings could be performed 10 days prior to open. Final height attained was significantly maximum for cold-frame plants (97.93 cm) and minimum for a hotbed (76.19 cm) with open being indifferent (86.17 cm) to cold frame and hotbed. Days to tendril initiation, days to flowering and days to first harvest were 57.52, 66.87 and 82.93 days respectively for cold-frame which was significantly minimum compared to hotbed (64.04, 70.38 and 86.95 days) and open (65.73, 71.23, 85.58 days), both being indifferent. Significantly maximum yield was obtained from cold-frame (1465.73 g) with open yielding significantly minimum (1004.06 g) and hotbed being indifferent (1122.45 g) to cold frame and open. Cold-frames are found to be comparatively effective to hotbed and open condition with 3.12 days earlier and 35% higher yield.


2019 ◽  
Vol 70 (16) ◽  
pp. 4197-4210 ◽  
Author(s):  
David G Mendoza-Cózatl ◽  
Arun Gokul ◽  
Mogamat F Carelse ◽  
Timothy O Jobe ◽  
Terri A Long ◽  
...  

Abstract Plants are capable of synthesizing all the molecules necessary to complete their life cycle from minerals, water, and light. This plasticity, however, comes at a high energetic cost and therefore plants need to regulate their economy and allocate resources accordingly. Iron–sulfur (Fe–S) clusters are at the center of photosynthesis, respiration, amino acid, and DNA metabolism. Fe–S clusters are extraordinary catalysts, but their main components (Fe2+ and S2−) are highly reactive and potentially toxic. To prevent toxicity, plants have evolved mechanisms to regulate the uptake, storage, and assimilation of Fe and S. Recent advances have been made in understanding the cellular economy of Fe and S metabolism individually, and growing evidence suggests that there is dynamic crosstalk between Fe and S networks. In this review, we summarize and discuss recent literature on Fe sensing, allocation, use efficiency, and, when pertinent, its relationship to S metabolism. Our future perspectives include a discussion about the open questions and challenges ahead and how the plant nutrition field can come together to approach these questions in a cohesive and more efficient way.


2010 ◽  
Vol 56 (No. 4) ◽  
pp. 194-199 ◽  
Author(s):  
M. Kabir ◽  
M.Z. Iqbal ◽  
M. Shafiq ◽  
Z.R. Farooqi

The effects of lead on root, shoot and seedling length, leaf area, number of leaves, plant circumference, seedling dry weight, root/shoot and leaf area ratios of <I>Thespesia populnea</I> L. were determined in greenhouse under natural environmental conditions with and without phytotoxic metal ions at 5, 10, 15, 20, and 25 µmol/l. Lead treatments have a strong influence on the growth and development of <I>T</I>. <I>populnea</I> by reducing significantly (<I>P</I> &lt; 0.05) all the above parameters. Lead treatment at 5–25 µmol/l produced significant (<I>P</I> &lt; 0.05) effects on seedling and root length, plant circumference and seedling dry weight of <I>T</I>.<I> populnea,</I> while lead treatment at 10–25 µmol/l produced significant (<I>P</I> &lt; 0.05) effects on shoot length, number of leaves and leaf area as compared to control. Tolerance in <I>T</I>.<I> populnea</I> seedling at 25 µmol/l of lead treatment was lowest as compared to all other treatments.


Author(s):  
N. V. Pryvedeniuk ◽  
A. P. Shatkovskyi

Oregano (Origanum vulgare L.) – is a perennial medicinal plant, its medicinal raw material is the aerial part collected in the flowering phase. When laying industrial plantations of oregano, the seedling method of propagation is mainly used, since after germination the plants slowly develop and compete weakly with weeds. The condition for survival of seedlings is high soil moisture, which can be achieved only with its artificial wetting - irrigation. An analysis of the literature indicates that today the issue of the cultivation pattern and nutrition area of oregano in the conditions of drip irrigation is not well understood. The aim of the conducted experimental studies was to establish the influence of the method of growing seedlings and plant’s alimentationon area on the growth and development of oregano under drip irrigation. The main research method is a field experiment, supplemented by analytical and static data processing methods. According to research’s results, it has been established that an increase in the area of plant nutrition contributes to an increase in the mass of the aerial parts and the area of leaves, and also reduces the height of plants during both the first and second years of vegetation. It was proved that the most favorable conditions for plant’s growth and development under the conditions of drip irrigation were in the variant with the largest nutrition area with planting density of 41,7 thousand plants·ha-1 (60x40 cm pattern). The mass of the aerial parts of plants with this method of growing in the first year of vegetation was 110,5-133,0 g ·plant-1 with the largest leaf area – 0,287-0,346 m2·plant-1 and 218,1-328,7 g ·plant-1, 0,568-0,855 m2·plant-1, respectively - in the second year of vegetation. The maximum height of plants – 37,0-37,7 cm in the first year of plant vegetation and 68,5-72,6 cm in the second year of vegetation was established in the variants with the smallest plant nutrition area: with a growing scheme of  60x10 cm (166,7 thousand ·ha-1). The smallest plant’s height in the first year of vegetation was 31,1-33,5 cm, in the second year – 37,5-48,4 cm in the variant of growing scheme 60x40 cm (41,7 thousand plants ·ha-1). When studying the influence of the method of growing seedlings on the mass of the aerial part and the area of leaves, their high parameters were found in variants with the laying of seedlings from spring sowing cassettes, where the mass of the aerial part was 103,8 g / plant with a leaf area of 0,236 m2 ·plant-1. The minimum weight of the aerial part is 92,3 g·plant-1 with a leaf area of 0,210 m2 ·plant-1 was found in variants with seedlings on cassettes from the autumn sowing period.


2020 ◽  
Vol 17 ◽  
pp. 00162
Author(s):  
Elena V. Krapivina ◽  
Tatyana V. Novikova

The normal state of hematological parameters in mammals at the beginning of ontogenesis is rightfully considered to be functionally very significant for the development of early ontogenesis in them. Hemostasis is considered to be very significant for vital functions and vulnerable blood systems. Its condition affects trophism due to the effect on the state of microcirculation, which is very important at the beginning of ontogenesis. In the neonatal phase, calves and piglets develop the formation of hemostasis and therefore, during these periods it can be easily disrupted. The appearance of hemostatic dysfunctions in the body of young animals, despite its importance, is still very poorly studied. This circumstance was the motivation for the study of the activity of the hemostatic system in calves and piglets that were born physically weakened. It was found that immediately after birth in weakened calves and piglets, there are physiologically unfavorable changes in platelet activity, vascular hemostasis and blood coagulation. This provides them with the appearance of excessive platelet activity and blood clotting with a significant weakening of vascular hemostasis. All these disorders lead to negative changes in their internal organs and create their serious dysfunctions. The development of disorders in the mechanisms of hemostasis in physically weakened calves and piglets during the neonatal phase is a serious mechanism for weakening their adaptation to the environment and slowing the growth and development of animals.


Author(s):  
Chaoshu Zeng ◽  
Guiomar Rotllant ◽  
Luis Giménez ◽  
Nicholas Romano

The vast majority of crustaceans are aquatic, living in either marine or freshwater environments. Marine crustaceans—such as copepods, in particular—are ubiquitous in the oceans and perhaps the most numerous metazoans on Earth. Because crustaceans occur in all marine habitats, their larvae are exposed to highly diverse and sometimes variable environmental conditions, including extreme situations in which various environmental factors exert significant effects on larval growth and development. This chapter first describes the effects of food availability on crustacean larvae. Food paucity is a commonly occurring scenario in the wild, which can directly affect larval growth and development and, in severe cases, results in mortality. In the subsequent sections, we cover the effects of temperature and salinity—the two most prominent physical parameters in the aquatic environments—on growth and development of crustacean larvae. We then discuss the influence of other important physicochemical factors in aquatic environments on larval growth and development, including dissolved oxygen, light, ocean acidification, and pollutants. Finally, the last two sections of this chapter discuss synergistic effects of different environmental factors and suggest future research directions in this field.


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