Research on Biological Materials with Effect of Constant Magnetic Field Intervention on Bone Growth and Development in Rabbits

2014 ◽  
Vol 1003 ◽  
pp. 85-90
Author(s):  
Lin Lv ◽  
Jian Hui Yang
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Constant Magnetic Field ◽  
Growth And Development ◽  
Bone Growth ◽  
Biological Materials ◽  
Control Group ◽  
Experimental Group

To investigate the effect of constant magnetic fields on bone deformation, 16 rabbits were randomly divided into the control group and the experimental group. Biological materials with effect of constant magnetic field were attached to the hind legs of rabbits in the experimental group for a period of 4 months. Rabbit bones were periodically measured and compared. Results showed that compared with the control group, rabbits in the experimental group exhibited significant bone growth, indicating that constant magnetic field may significantly activate bone growth in rabbits.

USING THE KAZAKH WHITE-HEADED BREED TO INCREASE BEEF IN THE FLAT PROVINCE OF DAGESTAN

2020 ◽  
Author(s):  
М.М. САДЫКОВ ◽  
М.П. АЛИХАНОВ ◽  
А.Г. СИМОНОВ ◽  
Г.А. СИМОНОВ
Keyword(s):  
Growth And Development ◽  
Live Weight ◽  
Control Group ◽  
Beef Production ◽  
Daily Growth ◽  
Carcass Yield ◽  
Breeding Stock ◽  
Fattening Period ◽  
The Cross ◽  
Experimental Group

Изучены рост и развитие бычков — помесей красной степной с казахской белоголовой породой в равнинной провинции Дагестана. Установлено, что помесный молодняк, по сравнению с чистопородным скотом красной степной породы, имеет более высокую живую массу при рождении на 1,8 кг, или 7,3%. При отъеме в 8-месячном возрасте помеси имели живую массу 210 кг против 187,6 кг у красного степного молодняка, что на 22,4 кг, или 11,9% выше. В 12-, 15- и 18-месячном возрасте живая масса помесных бычков равнялась 291,8 кг, 359,7 и 436,6 кг, соответственно, или на 28 кг, 36 и 45,8 кг больше по сравнению с красным степным скотом. Среднесуточные приросты помесных бычков за период выращивания и откорма составили 760 г, что выше на 12,1% по сравнению с чистопородным красным степным молодняком. После заключительного откорма и убоя помесные бычки дали тяжеловесные туши с хорошим поливом. По массе парной туши они превосходили чистопородных аналогов на 31,3 кг, или 15,6% с преимуществом выхода туши на 2,4%. Убойный выход у бычков опытной группы составил 58,7%, контрольной — 55,8%. От помесных бычков были получены тяжеловесные шкуры массой 27,1 кг, от чистопородных — 21,6 кг, преимущество по этому показателю имели помесные животные 5,5 кг, или 25,4%. Для увеличения производства говядины в равнинной провинции Дагестана рекомендуем скрещивание коров красной степной породы с быками казахской белоголовой породы. The growth and development of bulls of red steppe crossbreeds with the Kazakh white-headed breed in the flat province of Dagestan were studied. It was found that young crossbreed animals in comparison with purebred red steppe cattle have a higher live weight at birth by 1,8 kg or 7,3%. When weaning at 8 months of age, cross-bred bulls had a live weight of 210 kg against 187,6 kg in red steppe young, which is 22,4 kg, or 11,9% higher. At 12, 15 and 18 months of age, the live weight of crossbred bulls was 291,8 kg, 359,7 and 436,6 kg, respectively, or 28 kg, 36 and 45,8 kg more than the red steppe cattle. The average daily growth of cross-bred bulls during the growing and fattening period was 760 g compared to 678 g, that is, they were 12,1% higher compared to purebred red steppe young. After the final fattening and slaughter, the cross-bred bulls gave heavy carcasses with good watering. By weight of the paired carcass, they were superior to purebred counterparts by 31,3 kg or 15,6% with an advantage of 2,4% carcass yield. The slaughter yield of bulls in the experimental group was 58,7%, 55,8% in the control group, respectively, with an advantage in favor of crossbreeds of 2,9%. Heavy skins weighing 27,1 kg were obtained from crossbreed bulls, 21,6 kg from purebred ones, and crossbreed animals of 5,5 kg or 25,4% had an advantage in this indicator. Studies have shown that in order to increase beef production in the lowland province of Dagestan, it is necessary to use crossbreeding of the breeding stock of the red steppe breed with bulls of the Kazakh white-headed breed.

A Long-Term Follow-Up of Participants in the Trois-Rivières Semi-Longitudinal Study of Growth and Development

1998 ◽  
Vol 10 (4) ◽  
pp. 366-377 ◽  
Author(s):  
François Trudeau ◽  
Louis Laurencelle ◽  
Janie Tremblay ◽  
Mirjana Rajic ◽  
Roy J. Shephard
Keyword(s):  
Growth And Development ◽  
Perceived Barriers ◽  
Control Group ◽  
Attitudes And Beliefs ◽  
Long Term Follow Up ◽  
Experimental Subjects ◽  
Back Problems ◽  
Experimental Group

The purpose of this project was to undertake a long-term follow-up of participants in the Trois-Rivières Growth and Development Study. Some 20 years after their initial involvement in the program, two groups were compared: experimental subjects (n =150) who had received 5 one-hour sessions of specialized physical education per week throughout their 6 years of primary school, and the original control group (n = 103). All subjects completed a questionnaire regarding current patterns of physical activity (PA), attitudes and beliefs about PA, and perceived barriers to PA. Principal results indicate: (a) More experimental than control women exercise 3 times or more per week, (b) experimental subjects more commonly perceived their health to be very good to excellent, (c) control subjects in general felt less psychological dependency on exercise, and (d) women in the experimental group had a lower relative risk of back problems.

FROM RELATIVISTIC VECTOR MESONS IN CONSTANT MAGNETIC FIELDS TO NONRELATIVISTIC (PSEUDO)SUPERSYMMETRIES

1995 ◽  
Vol 10 (19) ◽  
pp. 2783-2797 ◽  
Author(s):  
J. BECKERS ◽  
N. DEBERGH
Keyword(s):  
Magnetic Field ◽  
Quantum Mechanics ◽  
Magnetic Fields ◽  
Constant Magnetic Field ◽  
Vector Mesons ◽  
One Dimensional ◽  
Recent Developments

Results coming from the study of relativistic vector mesons interacting with a constant magnetic field are examined through Johnson-Lippmann implications on one-dimensional oscillatorlike systems. We obtain specific nonrelativistic Hamiltonians showing new properties in quantum mechanics and leading to superpositions of bosons and pseudofermions. Moreover, two “potentials” are introduced and discussed in comparison with recent developments usually obtained in p=2 parasupersymmetric quantum mechanics. Pseudofermions are also examined, particularly with respect to orthofermions.

scholarly journals DYNAMICAL SYMMETRY BREAKING IN THE EXTERNAL GRAVITATIONAL AND CONSTANT MAGNETIC FIELDS

1999 ◽  
Vol 14 (04) ◽  
pp. 481-503 ◽  
Author(s):  
T. INAGAKI ◽  
S. D. ODINTSOV ◽  
YU. I. SHIL'NOV
Keyword(s):  
Magnetic Field ◽  
Gravitational Field ◽  
Magnetic Fields ◽  
Symmetry Breaking ◽  
Effective Potential ◽  
Constant Magnetic Field ◽  
Dynamical Symmetry ◽  
Green Functions ◽  
Dynamical Symmetry Breaking ◽  
Njl Model

We investigate the effects of the external gravitational and constant magnetic fields to the dynamical symmetry breaking. As simple models of the dynamical symmetry breaking we consider the Nambu–Jona-Lasinio (NJL) model and the supersymmetric Nambu–Jona-Lasinio (SUSY NJL) model nonminimally interacting with the external gravitational field and minimally interacting with constant magnetic field. The explicit expressions for the scalar and spinor Green functions are found to the first order in the space–time curvature and exactly for a constant magnetic field. We obtain the effective potential of the above models from the Green functions in the magnetic field in curved space–time. Calculating the effective potential numerically with the varying curvature and/or magnetic fields we show the effects of the external gravitational and magnetic fields to the phase structure of the theories. In particular, increase of the curvature in the spontaneously broken phase of the chiral symmetry due to the fixed magnetic field makes this phase to be less broken. At the same time the strong magnetic field quickly induces chiral symmetry breaking even in the presence of fixed gravitational field within the nonbroken phase.

scholarly journals Influence of the probiotic preparation “Plantarum” in the diets of pregnant animals on the growth and development of young animals

2021 ◽  
Vol 37 ◽  
pp. 00143
Author(s):  
Irina Funk ◽  
Nikolay Vladimirov ◽  
Alexander Yashkin ◽  
Lyudmila Pautova ◽  
Vitaly Gorshkov
Keyword(s):  
Body Weight ◽  
Growth And Development ◽  
The Body ◽  
Control Group ◽  
Standard Diet ◽  
Absolute Increase ◽  
Probiotic Preparation ◽  
Positive Effect ◽  
Experimental Group ◽  
Different Doses

The work aims to study the effect of different doses of the experimental probiotic preparation “Plantarum” when fed to pregnant animals on their reproductive qualities, as well as on the growth and development of young animals. To obtain young animals, four groups of goats were formed in the type of the Saanen breed, 20 heads each. In the first (control) group, the animals received a standard diet, in the diet of the animals of the second, third and fourth groups in the second half of pregnancy, the probiotic preparation “Plantarum” was additionally introduced, containing Lactobacillus Plantarum, Propiobacterium freudenreihii, in dosages from 0.4 to 0.8 ml/kg of body weight per day. From the offspring of the goats of the experimental groups, four groups of 12 goats were formed. The highest percentage of preservation (94%) and the highest business output of kids per 100 queens (150%) were observed in the fourth experimental group (0.8 ml). The goats of the second, third and fourth groups exceeded the body weight of their contemporaries from the control group by 3%, 6.3%, and 8.8%. The highest indices of the absolute increase in body weight by age periods were noted in the fourth group of goats. There were no significant differences in body build indices during the experiment between the goats of the control and experimental groups. Thus, the maximum positive effect was observed with the introduction of a probiotic preparation into the diet of pregnant goats at a dose of 0.8 ml/kg of body weight per day.

Effectiveness of Nesting on Posture Comfort among Low Birth Weight Babies in Neonatal Intensive Care Unit

2020 ◽  
Vol 11 (3) ◽  
pp. 3396-3401
Author(s):  
Jagadeeswari J ◽  
Swathi D
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Growth And Development ◽  
Demographic Data ◽  
Vital Signs ◽  
Control Group ◽  
Semistructured Interview ◽  
Study Results ◽  
Low Birth Weight Babies ◽  
Experimental Group

An infant is the most helpless gathering to get acclimates to the new condition. Following birth, during the initial months, they act as a momentary period during which the baby adjusts from the aquatic to the aerial environment. Nesting positions keeps up the flexion pose as such as intrauterine position and stances. As a fundamental obligation of the nurses, it is one of the most significant nursing procedures, positioning by nesting utilizes a non-pharmacological methodology to diminish torment and push and improve comfort. The present study aims to assess the effectiveness of nesting on posture comfort among low birth weight babies. A quantitative quasiexperimental research design was conducted among 30 low birth weight babies. Convenient sampling technique was used to select samples. A semistructured interview was used to collect demographic data, and posture comfort was assessed using a comfort scale. The babies in the experimental group were placed in a side-lying position inside the nest, which is then rolled blanket. After an hour, the posture comfort was re-assessed. The study results show significant improvement in the posture comfort among the experimental group than the control group after the intervention at the level of p<0.001. This reveals that nesting is highly signiϑicant in the experimental group because it improves posture comfort of the newborn, which in turn promotes growth and development of the low birth weight babies. This indicates that nesting is an effective and secure method to improve posture comfort, maintains the vital signs and helps in the development of low birth weight babies & promotes sound sleep in low birth weight babies.><0.001. This reveals that nesting is highly significant in the experimental group because it improves posture comfort of the newborn, which in turn promotes growth and development of the low birth weight babies. This indicates that nesting is an effective and secure method to improve posture comfort, maintains the vital signs and helps in the development of low birth weight babies & promotes sound sleep in low birth weight babies.

scholarly journals Does Pulsed Magnetic Field Therapy Influence Nerve Regeneration in the Median Nerve Model of the Rat?

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Benedicta E. Beck-Broichsitter ◽  
Androniki Lamia ◽  
Stefano Geuna ◽  
Federica Fregnan ◽  
Ralf Smeets ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Median Nerve ◽  
Pulsed Magnetic Field ◽  
Control Group ◽  
Test Statistics ◽  
Magnetic Field Therapy ◽  
Grasping Force ◽  
Field Therapy ◽  
The Right ◽  
Experimental Group

The aim of this study was to evaluate the impact of pulsed magnetic field therapy on peripheral nerve regeneration after median nerve injury and primary coaptation in the rat. Both median nerves were surgically exposed and denervated in 24 female Wistar rats. A microsurgical coaptation was performed on the right side, whereas on the left side a spontaneous healing was prevented. The study group underwent a daily pulsed magnetic field therapy; the other group served as a control group. The grasping force was recorded 2 weeks after the surgical intervention for a period of 12 weeks. The right median nerve was excised and histologically examined. The histomorphometric data and the functional assessments were analyzed byt-test statistics and one-way ANOVA. One-way ANOVA indicated a statistically significant influence of group affiliation and grasping force(P=0.0078). Grasping strength was higher on a significant level in the experimental group compared to the control group permanently from the 9th week to the end of the study.T-test statistics revealed a significantly higher weight of the flexor digitorum sublimis muscle(P=0.0385)in the experimental group. The histological evaluation did not reveal any statistically significant differences concerning the histomorphometric parameters. Our results suggest that the pulsed magnetic field therapy has a positive influence on the functional aspects of neural regeneration. More studies are needed to precisely evaluate and optimize the intensity and duration of the application.

Use of the feed additive “Toxinon” in feeding of replacement young chickens and laying hens

2022 ◽  
pp. 34-49
Author(s):  
T. A. Poleva ◽  
◽  
V. A. Tereshchenko ◽  
Keyword(s):  
Growth And Development ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
The Body ◽  
Production Costs ◽  
Feed Additive ◽  
Control Group ◽  
Egg Mass ◽  
Experimental Group

At the present time of the development of industrial poultry farming, the main tasks are to increase the productivity of poultry, reduce production costs and improve its quality. Under practical conditions, there is a shortage of minerals in compound feed for poultry, which leads to a violation of metabolism in the body, slowing down growth and development, deterioration of the work of organs and systems, a decrease in productivity and its quality, and an increase in the prime-cost of production. The purpose of the research was to study the effectiveness of the use of the feed additive “Toxinon” in feeding of replacement young chickens and laying hens. The research has been carried out under the conditions of OOO “Bogotolskaya Poultry Farm” in the Bogotolsky area in the Krasnoyarsk Territory. Comprehensive studies have been conducted to study the effect of the feed additive “Toxinon” on the growth and development, productivity and metabolism of replacement young chickens and laying hens of the industrial herd of the cross “Haysex brown”. The influence of different dosages of the feed additive “Toxinon” on the growth rate, livestock livability, digestibility and use of feed nutrients, egg productivity, egg quality, hematological and biochemical blood parameters of replacement young chickens and laying hens has been studied. The laying hens of the 3rd experimental group were distinguished by the highest egg productivity during the experiment period, which exceeded the control group in terms of the gross number of eggs by 6,4 %, the intensity of egg production by 5,02 abs.%, egg weight by 3,0 % (P > 0,95), the yield of egg mass on the average laying hen by 9,12 %. At the same time, expenditures of feed in the 3rd experimental group have decreased compared to the control group by 7,3 % for 10 eggs, by 9,2 % for 1 kg of egg mass. It has been found that in feeding replacement young chickens and laying hens, the most effective use of the feed additive “Toxinon” in the dosage of 0,25 % of the weight of the feed mixture (2,5 kg/ton of feed).

Features of the infl uence of feed protein supplement Biovitel on the growth and development of steers of Hereford breed

2020 ◽  
pp. 10-17
Author(s):  
E. Kokshanov ◽  
R. Fatkullin
Keyword(s):  
Growth And Development ◽  
Average Daily Gain ◽  
Live Weight ◽  
Feed Additive ◽  
Control Group ◽  
Intensive Rearing ◽  
Feed Protein ◽  
Daily Gain ◽  
Experimental Group

One of the ways to increase meat resources is to improve the condition of livestock on farms in the Russian Federation. This is due to the fact that when the fatness of the animal increases, the meat yield in the carcass increases. The purpose of the researches was to establish the features of the infl uence of the feed protein additive Biovitel on the growth and development of steers of Hereford breed. In order to achieve this purpose two groups of steers-analogs of Hereford breed (control and experimental) at the age of 6 months per 10 head in each have been formed. The time of the experiment was: the preparatory period of 22 days and the main one 275 days. Steers of the control group have received the main farm ration, and steers of the experimental group have received the main ration and feed protein additive Biovitel for 30 days with 10-days interval at the dose of 100 g per head during the sixth month. The results of researches on the infl uence of the feed protein additive Biovitel on the growth and development of steers of Hereford breed have been refl ected in the article. The addition of the feed additive Biovitel to the main ration of the experimental group of steers helped them to achieve a higher live weight and higher average daily gains under the same environments of feeding and housing in all age periods. By the end of the experiment (15 months) the experimental group of steers have reached the live weight of 430,2 kg, which was higher by 19,9 kg or 4,9 % compared to the control group of steers. In order to improve the quality of beef and increase its production more intensive rearing of steers of Hereford breed with the use of feed protein additive Biovitel has been justifi ed. The recommended dose is 100 g per head. This dosage allows you to achieve the average daily gain of 967,5 g and the average live weight of 430,2 kg by 15 months of age, reduce the prime cost and increase the profi tability of beef production.

scholarly journals EFFECT OF STRONG MAGNETIC FIELDS ON THE EQUILIBRIUM OF A DEGENERATE GAS OF NUCLEONS AND ELECTRONS

1996 ◽  
Vol 10 (23) ◽  
pp. 1141-1149 ◽  
Author(s):  
CHOON-LIN HO ◽  
V.R. KHALILOV ◽  
CHI YANG
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Neutron Stars ◽  
Strong Magnetic Field ◽  
Constant Magnetic Field ◽  
Fermi Momentum ◽  
Magnetic Field Induction ◽  
Strong Magnetic Fields ◽  
Field Induction ◽  
The Magnetic Field

We obtain the equations that define the equilibrium of a homogeneous relativistic gas of neutrons, protons and electrons in a constant magnetic field as applied to the conditions that probably occur near the center of neutron stars. We compute the relative densities of the particles at equilibrium and the Fermi momentum of electrons in the strong magnetic field as function of the density of neutrons and the magnetic field induction. Novel features are revealed as to the ratio of the number of protons to the number of neutrons at equilibrium in the presence of large magnetic fields.

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