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301 Uppsatser om Fish farming - Sida 13 av 21
"Fallbacks" - betydelsen av vandringstid för Atlantlax (Salmo salar L.) som faller nedströms vandringshinder
In Lake Vänern, Sweden, there is an endemic population of Atlantic salmon (Salmo salar L.) that lives its entire life in fresh water. The salmon is hindered from migrating to its natural spawning sites in the northern part of the River Klarälven by nine hydro-electric power plants. None of the hydro-electric power plants have fishways so that salmon migrating upstream or downstream may pass. In the current situation, the upward migrating salmon are caught in a fish trap at the most downstream located power plant in Forshaga. From there, the salmon are driven in a truck, past eight power plants and released a few kilometers upstream of the eighth power plant at Edsforsen.
Båtbottenfärger innehållande TBTO : huvudsaklig källa till TBT i miljön
Antifouling paint containing the biocide bisTributyltinoxide (TBTO) has been used since1960 to reduce the occurrence of fouling on hulls on boats/ships. January 1st, 2003 theantifouling paints containing TBTO were prohibited. This ban covered all use of paintcontaining the substance TBTO. The ban was introduced because of alarming observationssuch as development of imposex in aquatic non-target organisms. Imposex is the impositionof male sexual characteristics on mainly female marine snails and occurs due to exposure toTributyltin (TBT).
EFFEKTER AV STABILITETSTRÄNING I FOTLEDEN EFTER SKADA : EN LITTERATURSTUDIE
Breast cancer is the most common tumor disease among women in Sweden. About 7000persons, having a median age of 65, are diagnosed each year with this disease. Withmammography screening, breast cancer can be detected in an early stage which improves theoverall survival (OS). 20-30 % of the breast cancer tumors are overexpressing humanepidermal growth factor receptor 2 (HER2), which is a protein that stimulates cell proliferation.Trastuzumab (Herceptin®) is a humanised monoclonal antibody that targets the HER2-proteinand prevent the signals for cell proliferation.Trastuzumab has earlier been used for treatment of metastatic breast cancer. In the year of 2007trastuzumab was approved for adjuvant treatment of patients who has been medicated withsurgery and/or radiation.The aim of this study was to investigate the effects of adjuvant treatment with trastuzumab inHER2-positive breast cancer patients.
Köpares syn vid förvärv av lantbruksfastighet i Dalarnas och Gävleborgs län
Today's real estate buyers value the purchase different today compared to a decade back. Previously it was the return value that ruled the market. This has created problems when the broker must allocate the purchase price of the property's various elements, because non-monetary values such as forest for leisure, recreation, and the feeling of owing has increased in recent years and an increasingly important part in the valuation process.
The assessed value can be a guide, but is perceived today to be stereotyped to put a fair value at the individual item.
The purpose of this study was to provide the real estate agent decision support and a guide to the likely value of accounting for the purchase price.
The report is written on behalf of LRF Konsult. The result is based on a questionnaire survey which was conducted in June 2014 among all those who had bought a farming property in Dalarna and Gävleborg province mediated by LRF Konsult in 2013.
The report was made with a split to see if the valuation and motives differ between new and previous owners. It was possible to see a big difference in the reason for the purchase, where a large share of new owner bought the land for capital investment, in contrast to previous owners whose biggest group bought for an active use.
At several points it was possible to identify a higher non-monetary value of the new owner from the previous landowner.
Genus på menyn : Analyser av stabila kol- och kväveisotoper på skelettmaterial från Bjärbygravfältet från äldre romersk järnålder i Kastlösa på Öland
This paper deals with diet and gender in the early roman iron age in Sweden. Human bone and tooth material from the Iron Age cemetery at Bjärby in Kastlösa parish on the island of Öland have been analysed for stable carbon and nitrogen isotopes. 21 individuals were sampled. Where possible 4 samples were taken from each individual, from the first, second and third molar respectively and from one compact bone. By doing so it is possible, at least in theory, to trace intra-individual diets throughout life.
I människans tjänst? : en studie om relationen mellan människa och djuroffer i gravar från yngre järnåldern
By examine cremated remains from graves dated to late Iron Age I wanted to find out what sorts of animals were placed in the graves. But also to see if the animal sacrifices had any connection to the Old Norse religion. The osteological material that were analysed were from both cremated humans and animals and had been dated to Viking Age. The material is from burial ground 59 at Laxare, Boge parish on Gotland. In addition to the human remains, the material contains bones from horse, cattle, sheep/goat, pig, dog, cat, bear, birds and fish.
Det ekologiska steget : En studie kring hinder och drivkrafter för lantbrukares val att bedriva ekologisk livsmedelsproduktion i Östergötland
Denna studie syftar till att identifiera vad det är som driver eller hindrar lantbrukare i Östergötland att ställa om sitt lantbruk till ekologisk produktion och huruvida de identifierade påverkningsfaktorerna skiljer sig åt mellan konventionella och ekologiska lantbrukare. Semistrukturerade intervjuer med tre konventionella samt fyra ekologiska lantbrukare genomfördes för att undersöka deras erfarenheter. Respondenternas erfarenheter redovisas i sex identifierade teman; Gårdsspecifika förutsättningar, Ekonomi, Politik, Administration och regelverk, Miljö och hälsa samt Produktionsteknik. En jämförelse mellan de båda grupperna genomförs och det empiriska materialet ställs mot tidigare forskning. Resultatet av studien visar att skillnader mellan ekologiska och konventionella lantbrukares uppfattningar kring hinder och drivkrafter förekommer, men inte inom alla teman.
En studie av Växjö stadspark : med fokus på rekreation och sociala värden
Many people choose to live in urban environments. Since everyday life in many cities is characterized by a high pace it is important that good recreational areas, with the possibility of recovery, are available to the population.This paper is based on a case study of Växjö city park, which is the area surrounding the lake Växjösjön. The park and the lake are of great importance to the citizens. The lake Växjösjön has for a long time been affected by eutrophication, which has caused major problems as algal blooms and fish mortality. An extensive lake restoration was carried out in the 1990s in order to save the lake.
Fysiska strukturer i Umeälvens gamla älvfåra och dess inverkan på laxsmoltens utvandringsframgång
The survival of hatchery reared smolts is generally low after release. To get a better understanding of what variables affecting migration success, Atlantic salmon smolts were studied during their out-migration in the old river channel in the lower part of river Umeälven. The area consists of shifting habitat and complex structures which causes difficulties for smolt on their migration out to sea. The aim of this study was to try to determine the effects of feed restriction, fin conditions and different physical barriers in the river, on the migratory behavior of Atlantic salmon smolts in the river Umeälven.
The river was divided into six different sections using acoustic receivers strategically deployed along the river. Two-year old hatchery-reared smolts (n=150), in three different weight classes, were tagged with acoustic transmitters.
Välfärd i ekologisk och konventionell grishållning :
Organic animal husbandry has received a lot of criticism lately. The aim of this literature review was to examine if the rules and principles of organic pig farming give better or worse welfare in comparison to the conventional systems in Sweden. Health, physiology and behaviour have been used as indicators of welfare in this study. This is due to the importance of using more than one indicator in welfare assessments. Studies have shown that organic pigs have more remarks on joints when slaughtered, but these remarks can be reduced by vaccination against erysipelas.
Planering : fallstudie av en mjölkgård
The purpose of this paper is to give examples of different ways of economic planning and
calculation within agriculcture. My aim is to use a couple of them as an explanation of a case
from reality. My choice went to budgetsimulation and balanced scorecard since those are best
suited in this specific case.
In the information retrieval I present different instruments of economic planning like theory of
cost, budget and productcalculation. The budgetsimulation describes how to use the different
methods in a long term economic planning. The balanced scorecard is also a model of longand
short-term planning but besides the economy planning it?s also a reminder of your
personal goals.
In the model I have used a dairyfarm as a case.
Det kvinnliga medborgarskapet och jordfrågans lösning : En undersökning av Elisabeth Tamms artiklar utifrån ett ekofeministiskt perspektiv
This master thesis is about one of the first female in the Swedish Parliament, Elisabeth Tamm (1880?1958), and her political articles in the magazine Tidevarvet. The aim of this study is to find similarities with Tamm?s political thoughts with the Ecofeministic theory. Due to women?s right to vote 1919 women citizenship was in a political debate.
RESEBYRÅERS KONKURRENSFÖRDEL UTIFRÅN SEXHÖRNINGEN : Fritidsresor och Ving, vilken resebyrå väljer kunden utefter positioneringen i sexhörningen?
Resebyråerna växer i allt stadigare takt, allt eftersom fler människor väljer att färdas med flyg på grund av den effektiva globaliseringen som pågår världen om. Ving och Fritidsresor är två resebyråer som följt med utvecklingen sedan mitten av 1900-talet och har nu blivit två av de ledande resebyråerna i Sverige.Därmed är det intressant att göra en jämförelse mellan dessa och se om det finns några påtagliga likheter eller skillnader. Detta arbete kommer att beröra Ving och Fritidsresors konkurrens för- och nackdelar ur ett kundperspektiv. Det har tagits fram med hjälp av konkurrensmedelsmixen, sexhörningen som består av följande sex hörn, geografi, sortiment, kommunikation, människor, service och pris. För att ta reda på hur betydelsefulla hörnen är för kunden och hur de upplever att Ving och Fritidsresor möter deras behov.Undersökningen har gjorts med hjälp av en kombinerad enkätundersökning av kvantitativ- och kvalitativa frågor som senare har jämförts med aktuell teori.
Läkemedlet Oxazepam påverkar abborryngel : Exponering under embryonalutvecklingen ger effekter på tillväxt, överlevnad och beteende
Pharmaceuticals are environmental pollutants that are a major threat to aquatic ecosystems and very little is known about their ecological consequences. In this study growth, survival and behaviour (sociability, activity and boldness) of perch fry (Perca fluviatilis) were examined in order to study the possible effects of exposure to a benzodiazepine anxiolytic drug, Oxazepam, during embryonic development. The study tested following hypotheses: (1) perch growth is affected positively by exposure during embryonic development; (2) early perch survival is affected positively by exposure during embryonic development; and (3) boldness and activity increases while sociability decreases in perch fry exposed during embryonic development. Embryos of naturally spawned perch were exposed to water with two different concentrations of Oxazepam. The embryos were exposed during different parts (24-hour periods) of the embryonic development, because embryos may be more vulnerable at certain times during embryonic development and/or because the exposure at different times can produce different effects.
Small scale dairy farming in Zambia
Milk yield levels in dairy cows are influenced by many factors such as nutrition, breed, health status, management and environment. This study was conducted among small scale farmers in Zambia, where the climate can be dry for up to six months per year and cause a lack of green pasture for livestock and on-farm produced feed. The purpose of this study was to identify management factors that can influence milk yield at small scale dairy farms in Zambia, and present advice that could improve productivity, without the need of expensive investments. The study included semi-structured questionnaires presented to the farmers (n=29) including questions about cattle management and milk production. Testing of somatic cell count (SCC) with DCC (DeLaval Cell Counter) from herd milk samples (n=56) and observation of housing and animal body condition on-farm was also made.