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491 Uppsatser om Fish farm - Sida 18 av 33

Framtidens forntid : Geofysisk och geokemisk prospektering av järnåldersgården RAÄ 108, Fresta sn, Uppland

This paper deals with archaeological prospection of an Iron Age farm site in Toland, Fresta parish, Uppland County in Sweden. The purpose of the paper has been to see whether the geophysical methods applied (GPR & EM-38) could produce useful results that could motivate its use in similar surveys in the future. Geochemistry has been used for the purpose of identifying possible activity areas on the site. The results have shown that it is possible with a GPR survey to identify postholes originating from the Migration Period longhouse at the site. The combining of several methods have been important for the identification and interpretation of several areas of interest..

Tim Burton och fantasifabriken

Denna kvalitativa studie bygger på intervjuer med sex svensklärare vid tre olika gymnasieskolor. Genom att göra parintervjuer med lärarna har jag undersökt hur de tolkar skrivningarna om kulturarv och kulturell mångfald i läroplanen, Lpf94. Jag har även frågat hur de anser att deras undervisning påverkas av dessa ord i läroplanen.Orden kulturarv och kulturell mångfald är inte definierade i Lpf94. Lärarnas svar visar på hur denna brist på konkretisering av innehållet skapar viss osäkerhet men också speglar den bredd av tolkningar som det kan ge upphov till. Denna svårighet att definiera och ge utrymmer för en bredd i tolkningen är något som tidigare forskning också har påtalat.Resultatet visar att dessa sex lärare är väl medvetna om det dubbla uppdraget, att förmedla kulturarvet och att ha en kulturell mångfald i undervisningen.

"Anders Andersson hade eld i sin tjärdal" : en analys av Jonas Åströms dagböcker 1868-1891

"Anders Andersson had a fire in his tar-kiln ". Analysis of Jonas Åström 's peasant-diary 1868-1891 Peasant diaries are notes written by farmers, crofters and other people connected with small-scale agriculture. The notes give unique information about diverse aspects of rural life, for example, personal relationships and work, travel and regularity of church attendance. One such diary was written by Jonas Åström who lived in the county of Västerbotten, Sweden. The main aim of this study is to describe the work done by farmers in the 19th century, focusing on their use of forest resources, as recorded in his diary.

Nybyggnad till fårproduktion :

In Sweden we need more lambs during March to June. I decided to calculate on a spring lamb production, because to many of the Swedish lambs go to slaughter in the autumn. I counted on 1000 ewes which have 2000 lambs each year, 200 of these lambs stays on the farm and replace old ewes. The buildings are 3600 square meters. I have counted on two different sorts of buildings, the first one is a shed, the second one is three polytunnel sheephouses.

Dubbelkönighet hos mört : normalt eller miljöinducerat?

A number of chemical agents, and their degradation products, have been recognized as having estrogenic activity on animals. On fish they interfere with endogenous estrogen and in many cases mimic its activity, thus increase estrogenic reponse, with elevated levels of vitellogenin. Hence they are called Endocrine Disrupting Chemicals, EDCs. Vitellogenin levels is often used as a biomarker of exposure to estrogenic pollutants. Wastewater from sewage treatment works contains chemicals known as EDCs, and there are evidence of roach (Rutilus rutilus) living in recipients of such wastewater having traits of both gender, i.e. oocytes in male gonads (intersex) on histological examination. This study was done on roach living in Lake Funbosjön Uppland, Sweden.

Erfarenheter av utedrift med köttdjur i Sverige och Kanada :

Beef cattle wintering outdoors should be provided a shelter, e.g. a type of barn or corresponding. This type of production requires appropriate soil types and secured animal welfare. For example, a clean and dry resting place needs to be provided to the animals. To receive an exemption for buildings the farmer has to have something equivalent that provides an adequate shelter.

Uppfödning av gyltor till hållbara suggor

Half of Sweden?s 140 000-150 000 sows are culled and replaced by 75 000 gilts annually. Culling of old sows is necessary and allows new breeding material to enter the herd. However, many of the culled sows are young, and have not yet become profitable at the time for culling. Therefore, it is an important question for the pig industry, how to raise gilts to sows with a high and sustainable production level.

Analys av åldersstrukturen hos sik (Coregonus lavaretus) i sjöar utan gädda (Esox lucius)

Development of morphs within European whitefish (Coregonus lavaretus), might be considered as a beginning of a sympatric speciation process. Unpublished data suggests that presence of the keystone piscivore northern pike (Esox lucius) is the main driver of sympatric divergence in European whitefish (Coregonus lavaretus). Using introduced whitefish populations as controlled experiments, it is possible to determine when different characters diverge in the speciation process. In this study, I analysed age and growth within European whitefish populations of different age to assess if these characters change over time in absence of pike. With using otoliths from whitefish populations of different age, I was possible to determine individual age, and by measuring the length of the fish, growth was calculated.

Utvärdering av den nationella databasen över åtgärder i vatten i fem svenska huvudavrinningsområden

Restoration projects are planned and carried out in order to reduce the impact due to anthropogenic influence and to achieve at least good ecological status according to the EU Water Framework Directive. The resilience effort of such restorations is however ambiguous. The aim of this study was to evaluate the potential of follow up restoration measures in Swedish lakes and streams. In particular, we visualized the geographical spread of restoration measures in Sweden and quantified the different types of measures that were implemented so far. Further, we evaluated the extent of sampling of biological factors before and after the restoration measures have occurred. For the purpose of our study, we used the recently compiled national database of restoration measures in Swedish lakes and streams.

Hampa i det svenska textilarvet : en studie i hur historia om textilföremål arrangeras i mellanrummet mellan natur och kultur

This essay is about the Swedish textile heritage but also with an analysis of handmade hemp textiles from Transylvania. Plant fibers such as hemp and flax grown in a soil nature that existed around the subsistence farm. The knowledge of the earth nature combined with textiles has not been specifically studied in the research from the last century. By examining simple folk textiles of hemp shows how the textiles also are an universal field. The focus is on the raw material which is a transformation between nature and culture.With a phenomenological approach, the study will describe how the textile heritage announcement molds a territory in the interpretation of "our" Swedish plantfibres for textiles uses.

Bosättning, agrarkris och fäbodväsende : vegetations- och markanvändningshistoria i Läde, Dalarna

By using pollen analysis, 14C-dating and historical sources, I studied the history of vegetation and land use at an abandoned forest settlement near the Lade summer farms in the parish of Mora, Dalama. The aim of this paper is to investigate the agricultural establishment and development, the effects of this on forest vegetation, and the origin and development of summer farming. The analysis of pollen in a peat core revealed that a settlement was established at Lade around 1000 AD. Cereal cultivation, hay-making on the mire and extensive forest grazing were intro-duced as a complete agricultural system. Pollen analysis and the presence of ancient fields suggests that cultivation took place on permanent fields. Barley was the main crop, but rye and hops/hemp were also grown at the settlement.

Tankar om plöjningsfri odling :

The margin in crop production is more and more less and it forces the producer to check out how to reduce the cost of establishment of new crop. One way to reduce the cost in establishment is to begin with plough less farming. It saves money and time compares to conventional soil preparation with plough and harrow. Not all soil types are god for plough less farming and should be continued with ploughing (mainly light soil), but other soil types working very well with plough free farming. If you want to success with plough less farming you have to think in new lanes. One of the things you have to think about is to not grow too much cereal after cereal. Low stubble is important when you harvest the crop and also to spread and chop the straw well. I have in this work interviewed some farmers and farm advisers in Östergötland to see which thoughts they have about plough less farming.

Möjligheter till uppfödning och utsättning av fasaner och gräsänder på Björnslunds gård :

This study treats the possibility of breeding mallards and pheasants on our own farm, Björnslund. From the beginning I considered to breed them from eggs to adults but after visiting several breeders I changed my mind. It seemed to be a lot of work with no economic profit in comparison with buying already hatched birds and then feed them to adults. If the business shall be profitable I have to be soll the hunting for the birds and then sell the dead birds to game purchasers. There are also calculations that show which price you have to charge for the hunting that will give a positive result. Another possibility is to own a slaughterhouse and sell the meat to restaurants and supermarkets.

Prevalence of subclinical mastitis and udder pathogens in small holder dairy farms in Mapepe, Batoka and Choma areas in Zambia

Subclinical mastitis (SCM) is a well-known problem in the dairy sector, where it causes severe economic losses mainly due to reduced milk production. This is a problem not only in the western world but also in developing countries. Surveys from different developing countries have shown a SCM prevalence of 52.4 ? 88.6 % at cow level and 26.7 ? 63.2 % at quarter-level. To combat mastitis is important to optimize the milk production of the cow.

Predation som selektiv kraft bakom differentiering av populationer av sötvattensgråsugga, Asellus aquaticus

Predation is a strong dective force on invertebrate prey. Asellus aquaticus differs in pigmentation reed and submerged vegetation habitats in lakes. Light pigmented individuals al vegetation dominated by Chara sp. while dark pigmented individuals dominate in the reeds. These differences have been hypothesized to result from background matching.

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