Open Access
Issue
BIO Web Conf.
Volume 17, 2020
International Scientific-Practical Conference “Agriculture and Food Security: Technology, Innovation, Markets, Human Resources” (FIES 2019)
Article Number 00169
Number of page(s) 5
DOI https://doi.org/10.1051/bioconf/20201700169
Published online 28 February 2020

© The Authors, published by EDP Sciences, 2020

Licence Creative Commons
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

1 Introduction

In the modern world, pig breeding is an actively developing highly efficient branch of agriculture. Now it provides a significant part of the world’s population with highly nutritious food products – lard and meat [1, 2]. In view of the importance of pig breeding, its practitioners set the task of intensifying it by accelerating the rearing of young animals and achieving maximum preservation of the livestock [3]. This is possible to achieve through the use of new approaches to feeding and keeping [4].

Researchers begin to clearly link the viability and productivity of animals with the characteristics of hematological parameters [5]. At the same time, it becomes clear that hemostasis parameters largely affect the state of tissue perfusion and, due to this, the level of anabolism in animals and their productivity [6,7]. Due to the serious physiological significance and the possibility of rapid violation of indicators, they are paying more and more attention in studies under standard and model conditions [8].

The effective way of stimulating the body and enhancing the phenotypic manifestation of genetically determined traits even under negative environmental conditions [9] is considered to be the use of enhanced feeding and bio-stimulators [10]. Their use by mixing in food and the introduction of intramuscular injections can help to increase the productive qualities of pigs [11]. Catosal, which stimulates processes in the blood and tissues, is considered a very effective modern biostimulator in productive animals [12].

Blood parameters always have high liability and therefore are a sensitive marker of functional changes in the body. Blood counts can also respond early to the entry of bio-regulators into the body, which helps to determine their effectiveness. Also, by the dynamics of blood parameters, one can accurately judge changes in the metabolism in the body [13]. At the same time, not only biochemical parameters can change, but also hemostasis indicators. This dynamics is an important consequence of changes in the regulation of the functions of the whole organism [14]. It was very important to elucidate the effect of bio-stimulators on the activity of hemostatic mechanisms in piglets caught in adverse environmental conditions. The goal was set in the work: to find out the effect of Catosal on hemostatic parameters in piglets that experienced overheating.

Table 1.

The dynamics of hemostasis in piglets taken under observation

2 Materials and methods

This work was carried out in full compliance with ethical standards established by the European Convention for the Protection of Vertebrate Animals and used for scientific experimental purposes (adopted in Strasbourg on March 18, 1986 and confirmed in Strasbourg on June 15, 2006).

The study was conducted on 74 healthy pigs at the age of 2.5 months, which belonged to a large white breed. They were kept in pigsties of the Samara region of Russia. Some of these animals (42 heads) underwent accidental overheating as a result of falling into the environment for 3 hours at 10°C above the recognized optimum. These changes in ambient temperature occurred due to a quickly eliminated breakdown of the air conditioning system in the pigsty. The diet of all animals taken into the study was traditional. The animals tested overheating were randomly divided into comparable two groups: experimental and control 1.

The experimental group included pigs number 21 head. From the next day after the episode of overheating, these animals began to receive Catosal produced by Bayer HealthCare LLC (USA) by intramuscular injection of 2.5 ml per day for 5 days. Control group 1 consisted of 21 piglets. After experiencing overheating, these animals were kept under standard conditions on a standard diet. Piglets in both of these groups were examined twice: immediately after overheating and 10 days after it. Control group 2 consisted of 32 pigs of the same age, completely healthy and never experienced negative influences from the external environment.

Fibrinogen levels were assessed in piglets using the Klaus method. The plasminogen activity was determined by the kinetic method on an FP-901 instrument (LabSystems, Finland) using a chromogenic substrate (Dade Behring, Germany). The concentration of soluble fibrin-monomer complexes in the blood was evaluated by the visual method using reagents manufactured by Technologiya Standart (Russia).

The value of activated partial thromboplastin time was determined using a HumaClot coagulometer (HUMAN GmbH, Germany) using a HemoStat aPTT-EL reagent kit. The magnitude of the international normalized ratio was estimated by the Quick method. Platelet aggregation characteristics were determined by a turbodimetric method using a two-channel laser platelet aggregation analyzer (Biola, Russia). Adenosine diphosphate (ADP) 0.5 pM was used as an aggregation inducer.

The statistical processing of the results obtained in the work was performed using Student’s t-test.

3 Results

The performed clarification of the state of hemostasis in piglets undergoing temporary overheating revealed platelet and hemocoagulation mechanisms with a weakening of fibrinolysis (table). In these animals, the activity of their hemostasis in the first study was different from that in control group 2.

By the end of the observation, pigs treated with Catosal showed an increase in activated partial thromboplastin time (22.4%), a slight increase in the international normalized ratio (7.0%) and plasminogen (9.6%) with a decrease in fibrinogen (36.0%) and soluble fibrin-monomer complexes (37.5%), which reached control level 2 by the end of the observation. In animals of control group 1, acceleration of activated partial thromboplastin time (17.1%), a slight increase in the international normalized ratio (0.9%) and a slight decrease in plasminogen activity (0.9%) with an increase in the amount of fibrinogen (12.5%) and the amount of fibrin-monomeric complexes in the plasma (25.8%), proving the increase in hemostasis is higher than in control group 2.

After 10 days in piglets of the experimental group, platelet aggregation, which occurs spontaneously, was weakened by 20.0%; platelet aggregation, developing on the background of stimulation – by 23.0%. In control animals 1, platelet aggregation spontaneous and ADP-stimulated increased, exceeding the outcome by 17.2 and 23.5%, respectively. The difference in platelet aggregation level in experimental animals of control group 1 at the time of observation was 33.0% for spontaneous aggregation (p<0.01), and stimulated aggregation – 47.0% (p<0.01).

4 Discussion

Nowadays pig breeding demonstrates a serious need for further accumulation of knowledge on aspects of the physiology of piglets [2]. The study of many issues of the functioning of their internal organs and tissues under the influence of various factors on their bodies is considered very important. The implementation of work on the functioning of the body of piglets is now necessary for practice to rationalize approaches to increasing the profitability of breeding and raising pigs [15].

Systematic studies of the physiology of pigs have not yet given the opportunity to accumulate a sufficient amount of scientific knowledge on the functioning of their basic systems and especially blood. Therefore, it is necessary to evaluate the main mechanisms that provide blood homeostasis in piglets caught in different environmental conditions [16].

It is known that during early ontogenesis in piglets there are fluctuations in various functional parameters under the action of external factors that can impair the functioning of many animal systems. Their influence sometimes violates a number of blood parameters in the conditions of hemocirculation through the capillaries. These biological changes are of great importance, as they can regulate the level of metabolism throughout the body. In addition, this in a certain way affects the basic physiological processes associated with the liquid properties of the blood [17].

It is known that animals have a relationship of age and the state of blood parameters that affect the vital activity of the whole organism [18].

Of great importance is the further serious clarification of any physiological aspects in productive animals under any conditions of keeping and assessing the consequences of environmental influences [19]. Therefore, further physiological observations in piglets and pigs should complement knowledge about their functioning and help to improve approaches to their breeding and feeding [20]. A generalization of the results of these works with their application in practice is planned to intensify modern pig production [2123].

It is recognized that in mammals, the environment can affect the parameters of hemostasis [24]. Apparently, in the case of negative factors, dysfunctions often appear and pathology arises [25]. It is clear that a decrease in lipid peroxidation activity and an increase in the level of biologically active substances in the blood positively affect the body, activating its growth [26]. It was found that hemostasis activity may decrease [27], having a positive effect on blood rheology [28]. These changes in the blood are associated with improved microcirculation and metabolism with many stimulating effects from the outside [29].

In piglets that experienced overheating, when using Catosal, a decrease in hemostatic function to normal was noted. In control 1, deterioration was found, which led to the end of the observation of significant negative changes in hemostasis, indicating the appearance of prepathology.

The performed study made it possible to find out that the bio-stimulator Catosal positively affects the blood coagulation in piglets after short-term overheating. An important mechanism of this, apparently, is the weakening of the activity of coagulation factors in piglets [30].

Against the background of Catosal, apparently, the formation of thromboplastin and the level of activation of factor XII are weakened in piglets. Moreover, in the body of these piglets against the background of a Catosal, the concentration of fibrinogen and fibrinmonomeric complexes in the blood decreases. In piglets in control group 1, changes of the opposite nature occurred, leading to an increase in the severity of hemocoagulation and a weakening of fibrinolysis.

The administration of a Catosal to animals enhances the antioxidant defense of the animal organism [31, 32], which weakens platelet spontaneous and stimulated aggregation [33]. Obviously, the use of Catosal in piglets increased the amount of cyclic adenosine monophosphate in platelets and reduced the formation of thromboxane A2. These changes restrained platelet aggregate growth in blood in vivo [5].

In animals of control group 1, an increase in platelet aggregation was found, which was largely due to a weakening of the synthesis of cyclic adenosine monophosphate and increased thromboxane A2 generation in them, which increased the number of circulating platelet aggregates in their blood [8].

Researchers have an opinion about the relationship of physical status parameters that reflect the productivity of the animal and as they have hemostatic parameters [34]. In the conducted work were considered some of the early ontogeny of piglets. This allows relying on the obtained data to draw conclusions about the influence of Catosal on the functioning of the piglets that have experienced adverse effects on their body with the explanation of the obtained results with the dynamics of hemostasis.

However, found the possibility of normalizing the state of homeostasis disturbed by adverse environmental impact of using bio-stimulator, may be an important incentive for further research many aspects of stimulation of productivity of piglets, by influencing the activity of hemostasis [30].

5 Conclusion

It is clear that blood is the marker of changes in the functional state of the organism. It changes its settings on the intake of many substances. The stronger this background changes the metabolism, the result of a change of blood counts. This is true for hemostasis, which is able to regulate the condition of the animal. It was necessary to assess the impact of Catosal on hemostasis in piglets after their contact with the environment with high temperature. Found that overheating in piglets activated hemostasis, which negatively affect the circulation in their bodies and slowed their growth. The use of such animals Catosal reduced the activity of blood coagulation and platelet aggregation, activated their microcirculation and increases the growth of animals.

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All Tables

Table 1.

The dynamics of hemostasis in piglets taken under observation

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