The article is devoted to increasing the preserving and survival of piglets in conditions of industrial cultivation, where their organism is exposed to constant effects of adverse technological factors. The state of stress that occurs in this case leads to a decrease in the rate of growth and resistance of the young to a variety of diseases and can ultimately cause death of animals. One of the most promising directions for preventing the negative effects of stress and increasing the overall resistance of the piglet organism is the search, development and introduction of dietary supplements that increase physiological processes in the body, improve metabolism, increase the energy of growth, increase the yield of meat products. The purpose of the work was to find out the physiological state of a piglet organism during the period of weaning at the influence of the biologically active feed supplement «Praimiks Bionorm K» in the conditions of the SEPC «Komarnivsky». The research was carried out on piglets of 5 – 60-day-old age of the Poltava beef breed. Technological stress was the weaning of piglets at 40 days of age and the group maintenance of them with a change in the structure of the ration during the growing season. Piglets of the experimental group, together with the main feed, were additionally fed with «Praimiks Bionorm K» in the amount of 9.0 g/100 kg of feed (manufacturer – biotechnology company «Ariadna» Odessa). According to the results of the conducted research, it was found that the process of adaptation of the organism of the piglets of the control group to the stress isolation after 5 days was accompanied by an increase in blood hemoglobin concentration in 1.35 times (P < 0.01), the number of leukocytes – by 1.21 times (P < 0.05) at the expense of rodent and segmental neutrophils and monocytes – 1.54 times (P < 0.01), with a decrease in the number of eosinophils – 3.0 times (P < 0.001) and lymphocytes – 1.15 times (P < 0.01), compared with the period before weaning. 20 days after weaning in the K group, there was a decrease in the number of eosinophils in the blood by 2.25 times in the blood and lymphocytes by 1.25 times (P < 0.01), in the increase in the cellular and segmental neutrophils by 2.15 and 1.90 times, monocytes – by 1.85 times (P < 0.01) in comparison with the period before weaning. Neutrophilia, lymphopenia and eosinopenia were the most pronounced and persistent signs of stress in the piglets of the K group that arose out of the regulatory influence of glucocorticoids. While using biologically active feed supplement «Praimiks-Bionorm K» 5 days after weaning in the blood of piglets, the content of hemoglobin increased by 1.26 times; after 20 days its concentration increased by 1.22 times, as well as the increase in the number of leukocytes in 1.22 times (P < 0.01), neutrophils of rod-nuclei – 2.0 times, segmental ones – 1.37 times (P < 0.01), compared to control. The obtained results indicate that the use of BAFA «Praimiks Bionorm-K» allows to prevent the development of stressful events in the piglet organism, improve the status of the cellular level of nonspecific resistance and the level of productivity during the period of weaning and at different stages of development of the stress reaction after weaning.
The article presents the data of domestic and foreign literature on the changes that occur in the bird of industrial cultivation for the development of technological stress. Stress factors are outlined, among which the most significant for the bird organism is the high density of content, the microclimate of the production premises, the conditions of content and composition of the diet, vaccination, transportation. Investigators include high excitability, fear, aggressiveness, anxiety, fatigue, loss of appetite, and disturbance of behavioral reactions of young chickens, quail, ducks, and industrial growth to inadequate changes in external and internal environmental factors. Common signs of stress in the mature chickens, quails, ducks during the development of technological stress set premature mass maturation, decrease and complete cessation of oviposition, reproductive function, weakening of muscle tone. In stress, the activity of all systems of an organism, directed on self-defense and adaptation to new conditions of existence, strains. A prerequisite for the development of stress-reaction is to strengthen the function of the glands of the inner secretion and especially the hypothalamus system – the anterior part of the pituitary gland – the adrenal cortex. It has been established that in the process of adaptation of the organism to the action of adverse factors the concentration of blood sugar increases due to the cleavage of the glycogen in the liver, the mobilization of lipids from the fat depots increases, the intensity of metabolic processes in the adipose tissue increases, and this ensures an increase in the concentration of fatty acids in the blood. The negative influence of stress factors on resistance, immunological reactivity, microbiocenosis state, functioning of the digestive system, preservation and productivity of the bird population are shown. These states are directly related to the activity of the hormonal and autonomic nervous systems and are determined by nonspecific protective factors of the organism. Different ways of correction of disturbed homeostasis are shown. The effectiveness of the use of probiotics, symbiotics, humic substances in the poultry diet is given to prevent the development of negative stress phenomena in their body. It is proved that the management of the processes of development of adaptive ability of the bird organism is one of the key aspects of the development of the corresponding complex of technological measures of their growing and feeding that is conducive to the increase of economic efficiency. The search for methods for the prevention of stress in poultry farming is aimed at eliminating the etiological factors of stress, the removal of birds resistant to stress, the use in feeding substances that reduce the response to the action of adverse stimuli or increase resistance to the organism. Affecting the formation of adaptive reactions of the bird organism long before the stress, as well as in the development of the adaptive syndrome, it is possible to implement its prophylaxis, that is, to ensure the consistent functioning of all physiological systems and the activation of protective forces through the use of biologically active harmless feed additives in diets.
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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