scholarly journals Intensity of growth and development of rainbow trout using feeds Aller Aqua and Aquafeed Fischfutter

Author(s):  
J. I. Pivtorak ◽  
I. Y. Bobel

Due to the rapid development of feed since the early 1990's, efficiency has increased dramatically. The effectiveness is achieved by increasing energy levels, reducing the level of carbohydrates and balancing various nutrients that meet the needs of fish. Improvement of efficiency should be taken into account when determining the amount of ration feeding. The economic efficiency of growing fish depends largely on proper feeding. The feed should be dosed depending on its formulation and size, the physiological state of the fish, the temperature of water and the content of oxygen in it. Salmon fish are demanding oxygen treatment. The content of oxygen in water should be at least 7 mg/l. At a lower oxygen level, the growth of fish is suppressed, and the effectiveness of food is reduced. The optimum temperature of water for growing salmon fish is 14–18 °С. Excessive feeding leads to unproductive feed costs and water pollution, insufficient  feeding leads to incomplete realization of potential opportunities for the rate of growth of fish. The quantity of the daily ration is established taking into account the temperature of water and the mass of fish. Depending on their state, activity and conditions of maintenance, it can fluctuate within ± 20% of the norm. In addition, high fertility densities, unsanitary conditions, illness, low water exchange rates, low oxygen content in water affect the efficiency of feeding in trout farms. Due to the fact that the cost of forage for trout is up to 60% of all costs for its cultivation, the problem of it rational use and saving is at the forefront. When feeding trout it is necessary to take into account that the size of granules for young fish in the length of 4–20 cm should be from 2.2 to 2.6% of the body length (according to Smith), which corresponds to the size of the mouth and the distance between the gill stamens in rainbow trout. Fish is best fed often in small portions. The smaller the fish, the more often feeding. Going on a feed of another size or type should be gradually over 3–5 days. If necessary, it is necessary to use special therapeutic granulated food or a mixture of therapeutic ingredients to add to the wet granules. It is necessary to create optimal conditions for growing and to carry out constant monitoring of water temperature and its fluctuations, oxygen content in water, pH, atmospheric pressure, etc. It is necessary to follow the rules of storage of forages, taking into account that the quality of feed after being stored for more than 3 months is deteriorating. This happens. It may be caused by poor water quality or disease. In order for the fish to get used to a particular feeding regime, it is recommended to do feed it at the same time. Today, the diversity of feeds allows you to get a better feed rate, fast growth and a minimal impact on the environment under different conditions, since the need of  fish in nutrients is fully covered by feeds (energy, protein, minerals and vitamins). The use of Aller Aqua feed guarantees receiving of a strong, healthy fish, thus providing good economic performance to farms. The basis of the research is the analysis of the nutritional value of the feeds of the company Aquafeed Fishsfutter of the German producer and Aller Aqua of the Danish company in the production conditions on the farm of the Western Fish Company PP of Peremyshlyany district, Lviv region. Also we should study fodder, their composition and carry out an objective assessment. It is known that fodder of foreign producers are characterized by higher energy value due to increased fat content, which is achieved by application of the appropriate technology and equipment for vacuum desiccation. For example, Aller Aqua's salmon-based compound feed for protein levels 40–46% contains 15 to 32% lipids and 23–24 MJ/kg of gross energy. Due to the high energy value, these feeds allow to provide the growth of fish at low feed costs. The aim of the work was to analyze the impact of different producers of feed fodder for commodity groups of trout on their growth and the development and receipt of quality commodity products in short terms.

Author(s):  
DB Heyner ◽  
G Piazza ◽  
E Beeh ◽  
G Seidel ◽  
HE Friedrich ◽  
...  

A promising approach for the development of sustainable and resource-saving alternatives to conventional material solutions in vehicle structures is the use of renewable raw materials. One group of materials that has particular potential for this application is wood. The specific material properties of wood in the longitudinal fiber direction are comparable to typical construction materials such as steel or aluminum. Due to its comparatively low density, there is a very high lightweight construction potential especially for bending load cases. Structural components of the vehicle body are exposed to very high mechanical loads in the case of crash impact. Depending on the component under consideration, energy has to be absorbed and the structural integrity of the body has to be ensured in order to protect the occupants. The use of natural materials such as wood poses particular challenges for such applications. The material characteristics of wood are dispersed, and depend on environmental factors such as humidity. The aim of the following considerations was to develop a material system to ensure the functional reliability of the component. The test boundary conditions for validation also play a key role in this context. The potential of wood–steel hybrid design based on laminated veneer lumber and steel was investigated for use in a component subjected to crash loads such as the door impact beam. The chosen solution involves a separation of functions. A laminated veneer lumber-based beam was hybridized with a steel strip on the tension side. The steel strip was designed to compensate the comparatively low elongation at fracture of the wood and to ensure the integrity of the beam. The wooden component was designed for high energy absorption due to delamination and controlled failure during the impact, while maintaining the surface moment of inertia, i.e. the bending stiffness of the entire component. This approach was chosen to ensure the functional safety of the component, avoid sudden component failure and utilize the high potential of both materials. The tests carried out provided initial functional proof of the chosen solution. The hybridization achieved significantly higher deformations without sudden failure of the beam. In addition, bending capabilities were increased significantly compared to a beam without hybridization. In comparison with a state-of-the-art steel beam, the hybrid beam was not able to achieve the maximum deformation and the target weight of the hybrid beam. Further optimization of the hybrid beam is therefore necessary.


Author(s):  
Barry Croke ◽  
Wendy Merritt ◽  
Peter Cornish ◽  
Geoffrey J. Syme ◽  
Christian H. Roth

Abstract. This paper presents an overview of work in West Bengal, Andhra Pradesh and SW Bangladesh through a series of projects from 2005 to the present, considering the impact of farming systems, water shed development and/or agricultural intensification on livelihoods in selected rural areas of India and Bangladesh. The projects spanned a range of scales spanning from the village scale (∼  1 km2) to the meso-scale (∼  100 km2), and considered social as well as biophysical aspects. They focused mainly on the food and water part of the food-water-energy nexus. These projects were in collaboration with a range of organisations in India and Bangladesh, including NGOs, universities, and government research organisations and departments. The projects were part funded by the Australian Centre for International Agricultural Research, and built on other projects that have been undertaken within the region. An element of each of these projects was to understand how the hydrological cycle could be managed sustainably to improve agricultural systems and livelihoods of marginal groups. As such, they evaluated appropriate technology that is generally not dependent on high-energy inputs (mechanisation). This includes assessing the availability of water, and identifying potential water resources that have not been developed; understanding current agricultural systems and investigating ways of improving water use efficiency; and understanding social dynamics of the affected communities including the potential opportunities and negative impacts of watershed development and agricultural development.


Author(s):  
N.L. Stowers ◽  
L.A. Waldron ◽  
I.D. Pryor ◽  
S.R. Hill ◽  
J. O'Brien

SummaryEquine Gastric Ulcer Syndrome (EGUS) is extremely prevalent in both racing and non-racing horse populations. The exact aetiology of EGUS is unclear but many stress related risk factors have been implicated including the feeding of grain-based diets. Current treatment techniques often necessitate drug therapy which, when added to feed costs, can be expensive and may have a detrimental effect on digestion due to the mode of action of these therapies. The following experiment set out to investigate if feeding fermented, forage-based feeds (Modified Bio-Fermentation (MBF) lucerne feeds treated with Xanotyde®, registered as FiberProtect® and FiberEdge®; Fiber Fresh Feeds Ltd, Reporoa, New Zealand), could assist in the healing and prevention of ulceration. Nine adult horses with demonstrable and sustained gastric ulceration (diagnosed by gastric endoscopy), were used in a two part study. The first 42 d healing phase investigated the impact of feeding FiberProtect® (FPT) or FiberEdge® (FED) on established gastric ulcers. After 14 d on these diets 44% (4/9) of horses had no ulceration or hyperaemia (inflammation) (EGUC grade 0) and all horses were ulcer free (EGUC grade 0) at d 42. A significant (P < 0.01) relationship was determined between length of time fed and disappearance of ulcers (R2 = 0.9004; DF = 2). The prevention phase utilised the same horses, ulcer-free at d 42, and fed them a grain-based high energy racing diet alongside FPT at 40% and 60% of the total diet (DM basis). The horses were monitored for a further 28 d (d 42 – d 70), and only three showed a recurrence of ulceration throughout this period. At d 70, eight out of nine horses were ulcer free (EGUC grade 0). The findings suggest that FPT and FED can be used to heal and prevent gastric ulceration, and that FPT can be fed alongside a high grain diet to prevent recurrence of gastric ulcers.


2019 ◽  
Vol 15 (3) ◽  
pp. 53-63
Author(s):  
Agnieszka Kaliniak

The objective of the research was to evaluate the impact of the fishing season on the value in use and physicochemical properties of the meat of selected fish species reared in Polish aquaculture. The study was conducted on five species: rainbow trout, common carp, grass carp, pike and tench. Fish were obtained from farms located in the Lublin Voivodeship in two seasons (spring/summer and autumn/winter). Morphometric measurements of the fish were performed, the percentage shares of body parts were assessed, and the physicochemical properties of the muscle tissue were measured: pH, electrical conductivity, water holding capacity, and CIE L*a*b* colour characteristics. The fishing season significantly affected the body weight of carp, rainbow trout and pike, the greatest body height of carp and rainbow trout, and the total length and head length of pike. Pike, grass carp and tench had significantly lower Fulton’s condition factors in the autumn/winter season than in the spring/summer season. The season significantly influenced the share of viscera in rainbow trout and grass carp, and that of fins in carp and rainbow trout. A significant impact of the season was also noted in the case of pH in rainbow trout and tench, electrical conductivity in trout, pike and tench, and the M/T ratio in grass carp and tench. Chromatic parameters differed significantly between seasons in pike (a*) and in carp and rainbow trout (b*).


2018 ◽  
Vol 25 (4) ◽  
pp. 334-343 ◽  
Author(s):  
Lauren Rosko ◽  
Victoria N. Smith ◽  
Reiji Yamazaki ◽  
Jeffrey K. Huang

The human brain weighs approximately 2% of the body; however, it consumes about 20% of a person’s total energy intake. Cellular bioenergetics in the central nervous system involves a delicate balance between biochemical processes engaged in energy conversion and those responsible for respiration. Neurons have high energy demands, which rely on metabolic coupling with glia, such as with oligodendrocytes and astrocytes. It has been well established that astrocytes recycle and transport glutamine to neurons to make the essential neurotransmitters, glutamate and GABA, as well as shuttle lactate to support energy synthesis in neurons. However, the metabolic role of oligodendrocytes in the central nervous system is less clear. In this review, we discuss the energetic demands of oligodendrocytes in their survival and maturation, the impact of altered oligodendrocyte energetics on disease pathology, and the role of energetic metabolites, taurine, creatine, N-acetylaspartate, and biotin, in regulating oligodendrocyte function.


Author(s):  
Varinder Kaur ◽  
Subhash Upadhyay ◽  
Sakshi

Ayurvedic science is being popularized worldwide. It has established history for the management of Bhagna in Sushruta Samhita. Ayurvedic philosophy is specific pertaining to the body constitution. The human body is composed of Dhatus. “Asthi” Dhatu is one of the main Dhatu in human body. “Asthi” is hard substance which remains even after most part of body has been decayed. Ayurvedic science has established history of trauma to Asthi (Asthibhagna). Ayurveda has aimed high for maintaining normal structure and function of deformed bones. It is high time to re-establish it by adopting proper research and methodology. The skeletal injuries are important incidences in human beings and they demand immediate management. The branch of science that deals with deformities of bones is known as Orthopedics, aimed for “maintenance of normal structure and function of deformed bones.” While bones are very strong they can break. Most often, breaks happen because the bone runs into a strong force, also repetitive force like from running can fracture a bone. High energy trauma result in bone fractures whether it is isolated fracture or dislocation. When a person goes through some form of trauma, as car accident or fall, the impact may break or fracture the bone. The bone fracture may be the result of high force impact or a result of certain medical conditions that weaken the bones such as Osteoporosis. Fracture is properly termed pathologic fracture but not trauma.


Animals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 793 ◽  
Author(s):  
Abdul Sammad ◽  
Ya Jing Wang ◽  
Saqib Umer ◽  
Hu Lirong ◽  
Imran Khan ◽  
...  

Higher milk yield and prolificacy of the modern dairy cattle requires high metabolism activities to support them. It causes high heat production by the body, which coupled with increasing environmental temperatures results in heat stress (HS). Production, health, and welfare of modern cattle are severely jeopardized due to their low adaptability to hot conditions. Animal activates a variety of physiological, endocrine, and behavioral mechanisms to cope with HS. Traditionally, decreased feed intake is considered as the major factor towards negative energy balance (NEBAL) leading to a decline in milk production. However, reciprocal changes related to insulin; glucose metabolism; failure of adipose mobilization; and skeletal muscle metabolism have appeared to be the major culprits behind HS specific NEBAL. There exists high insulin activity and glucose become preferential energy fuel. Physiological biochemistry of the heat stressed cows is characterized by low-fat reserves derived NEFA (non-esterified fatty acids) response, despite high energy demands. Besides these, physiological and gut-associated changes and poor feeding practices can further compromise the welfare and production of the heat-stressed cows. Better understanding of HS specific nutritional physiology and metabolic biochemistry of the dairy cattle will primarily help to devise practical interventions in this context. Proper assessment of the HS in cattle and thereby applying relevant cooling measures at dairy seems to be the basic mitigation approach. Score of the nutritional strategies be applied in the eve of HS should target supporting physiological responses of abatement and fulfilling the deficiencies possessed, such as water and minerals. Second line of abatement constitutes proper feeding, which could augment metabolic activities and synergizes energy support. The third line of supplemental supports should be directed towards modulating the metabolic (propionates, thiazolidinediones, dietary buffers, probiotics, and fermentates) and antioxidant responses (vitamins). Comprehensive understanding of the energetic metabolism dynamics under the impact of incremental heat load and complete outlook of pros and cons of the dietary ameliorating substances together with the discovery of the newer relevant supplementations constitutes the future avenues in this context.


2014 ◽  
Vol 614 ◽  
pp. 163-167
Author(s):  
Olivera Lupescu ◽  
Mihail Nagea ◽  
Dragos Zamfirescu ◽  
Alexandru Dimitriu ◽  
Mihai Coltan ◽  
...  

Modern traumatology is characterized by high energy trauma, simultaneously affecting parts of the body especially in young patients. One of the most severe aspects resulting of high energy trauma is that of multiple skeletal injuries, with bone loss, which require complex treatment; this refers both to methods of filling the bone defects and to interdisciplinary approach whenever soft tissues are injured, as well. This case demonstrate the impact of modern approach in high energy trauma, with multiple aspects: bone substitutes as effective technique of bone filling and prevention of septic complications, as well as team work for concomitant treatment of associated injuries. The outcome of the patient, compared to the initial status, demonstrate the benefit of bone substitutes for a rapid recovery of trauma patients, with major impact on social and professional recovery.


2018 ◽  
Vol 15 (2) ◽  
pp. 1-20
Author(s):  
Sabri Embi ◽  
Zurina Shafii

The purpose of this study is to examine the impact of Shariah governance and corporate governance (CG) on the risk management practices (RMPs) of local Islamic banks and foreign Islamic banks operating in Malaysia. The Shariah governance comprises the Shariah review (SR) and Shariah audit (SA) variables. The study also evaluates the level of RMPs, CG, SR, and SA between these two type of banks. With the aid of SPSS version 20, the items for RMPs, CG, SR, and SA were subjected to principal component analysis (PCA). From the PCA, one component or factor was extracted each for the CG, SR, and RMPs while another two factors were extracted for the SA. Primary data was collected using a self-administered survey questionnaire. The questionnaire covers four aspects ; CG, SR, SA, and RMPs. The data received from the 300 usable questionnaires were subjected to correlation and regression analyses as well as an independent t-test. The result of correlation analysis shows that all the four variables have large positive correlations with each other indicating a strong and significant relationship between them. From the regression analysis undertaken, CG, SR, and SA together explained 52.3 percent of the RMPs and CG emerged as the most influential variable that impacts the RMPs. The independent t-test carried out shows that there were significant differences in the CG and SA between the local and foreign Islamic banks. However, there were no significant differences between the two types of the bank in relation to SR and RMPs. The study has contributed to the body of knowledge and is beneficial to academicians, industry players, regulators, and other stakeholders.


2020 ◽  
pp. 15-18
Author(s):  
Inna R. Kilmetova ◽  
◽  
Igor A. Rodin ◽  
Nazira I. Khayrullina ◽  
Nikolay G. Fenchenko ◽  
...  

Summary. The disbalanced feeding and the uneven distribution of micro- and macroelements in the environment leads to a trace element, in particular hypomelanosis. To accelerate the growth and preservation of young farm animals include in the diet of various biological additives and drugs, which include selenium. For stimulation of weight gain in the livestock industry, as well as for the prevention and treatment of pathological processes in addition to micro - and macrouse amino acids, primarily methionine. The aim of this work was to study the influence of composition of DAFS-25+Polizon on morpho-biochemical parameters of blood and functional state of the liver in fattening bulls of black-motley breed in the conditions of the Republic of Bashkortostan. Experiments using were conducted on bull-calves of black-motley breed of the properties in the properties age from 6 to 15 months. The first experimental group during the experiment was additionally given the composition of DAFS-25+Polizon at a dose of 2 mg/kg, the animals of the control group received a standard diet. To assess the impact of the composition DAFS-25+Polizon on metabolism cattle studied morphological and biochemical indicators of blood and conducted histological examination of the liver. It is established that the use of the composition of DAFS-25+Polizon at a dose of 2 mg/kg increases the number of erythrocytes and hemoglobin in the experimental group and reduces the amount of white blood cells. The serum content of total protein, phosphorus and calcium increases in the group of experimental animals. Microscopic examination of the liver revealed no changes in the structure of the organ and hepatocytes in the experimental group, whereas in the control group hemodynamic disorders and dystrophic changes in liver cells were observed. Thus, the use of the composition DAFS-25+Polizon at a dose of 2 mg/kg of live weight in fattening bulls black-and-white breed contributes to the increase of redox processes in the body, stimulation of metabolism, prevent the development of liver disorders of cellular mechanisms of metabolism, optimizes the structure of the liver, which generally provides higher productivity.


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