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553 Uppsatser om Milk yield - Sida 35 av 37

Feromoninnehållande substansers inverkan på hjärtfrekvensen hos tjur :

During the last 50 years the production of milk per cow has increased. This has, however, been followed by a decreased reproductive performance. Shorter and more indistinct signs of oestrus make it harder for the Swedish farmers to discover when the cows are in oestrus. There is a need for ways to control reproduction. The use of pheromones could possibly provide means to satisfy this need.

Förändrad markanvändning vid biodrivmedelsproduktion : en empirisk undersökning av svenskproducerade biodrivmedels påverkan på åkermarkens användning

Increasing the use of biofuels is an important part of achieving the EU?s target of 10 percent renewable energy in the transport sector. However, the competition between biofuels and food production is an ongoing concern. Also, several studies have indicated a significantly higher climate impact than was earlier estimated, due to emissions from land use. In Sweden, both the use and production of biofuels from crops have increased substantially during the last decade. The purpose of this project is first to present an overview of the Swedish land use in all sectors.

Housing of ringtailed lemur, Lemur catta, from an ethological perspective

Sheep production is the only animal production in Sweden that is increasing. Therefore,increasing knowledge of the production is of great interest. In order to run a viable sheepproduction, producers needs to be successful in the breeding of the animals and achievean economic surplus in the end. Lambs that are born healthy and vital have greaterconditions to perform high lamb weight gains and thus a successful production. Thereare many factors affect the survival, birth weight and early weight gain of the new bornlamb.

Födelsevikt och tidig tillväxt hos nyfödda lamm

Sheep production is the only animal production in Sweden that is increasing. Therefore,increasing knowledge of the production is of great interest. In order to run a viable sheepproduction, producers needs to be successful in the breeding of the animals and achievean economic surplus in the end. Lambs that are born healthy and vital have greaterconditions to perform high lamb weight gains and thus a successful production. Thereare many factors affect the survival, birth weight and early weight gain of the new bornlamb.

Indelning av trakter inför gallring på Holmen Skog : en utvärdering av svårigheter och möjligheter

A common goal in practical forest management is to maximize the yield, measured in economical terms. When a forest stand is thinned a so called inoptimality loss can arise due to non-optimal decisions. This means that the selected management schedule results in a lower net present value than the optimal one which lowers the profitability for the forest owner. Holmen Skog uses the term tract which means an aggregation of stands made before a management action. A tract should be delineated in different tract parts in connection with pre-thinning planning if there is different bearing capacity within the tract, different thinning grades should be used or if the tract contains a weaker part that should not be thinned.

Effects of biogas residues on respiration and denitrification in arable soil : evaluation of methods, microbial activity and agronomic implications

Agricultural soils constitute the base in human food production and soil content of organic matter and plant nutrients together with soil microbial activity are all important parameters for high crop yield of good quality. These parameters are dependant on proper fertilization.Anaerobic digestion of organic wastes for biogas production generates a liquid residue called biogas residue (BR). It contains organic material and plant nutrients which makes ita potential fertilizer for arable cropping. However, it also contains heavy metals and toxic organic compounds and it is therefore in need of evaluation before usage.Microbial tests were performed aiming to evaluate the agronomic traits of four different BR and to find a viable procedure for evaluating slurry fertilizers. Two experiments where soil respiration and soil potential denitrification activity (PDA) was measured at fertilizer addition were performed.

Welfare impairment of lambs around weaning. Play and other behaviour indicative of affective state

The abrupt and early weaning of intensively kept lambs may have serious animal welfare implications, but relatively little is known about this. Weaning includes the breaking of the mother-young bond and abrupt replacement of milk by solid food, often coinciding with changes in the (social) environment. Altogether, these changes are likely to affect lamb welfare significantly. This study aimed to establish how strong and persistent lamb welfare is impaired following abrupt weaning by means of measuring behaviour parameters indicative of affective state. Also, we investigated the existence of a diurnal rhythm in play behaviour, which is considered an important indicator of positive affect and good welfare.

Råvarumarknaden Vs Aktiemarknaden : En studie av råvaror och råvarumarknadens prestationer samt reaktioner i relation till aktiemarknaden

Syfte: Syftet med denna undersökning är att studera råvaruprisets samt aktiemarknadens prestationer i form av procentuell avkastning under olika konjunkturlägen från år 1969 och fram till 2009. Samt att studera råvarumarknadens reaktion vid börsfall. Marknaderna ställs dessutom i relation till varandra. Detta görs genom tre delsyften: Hur presterar råvaror i relation till aktiemarknaden i hög- respektive lågkonjunktur? Ökar råvarupriset och aktiemarknaden i samma konjunkturlägen? Hur har råvarumarknaden till skillnad från aktiemarknaden reagerat vid större börsfall?Metod: Undersökningen är kvantitativ, deduktiv samt utgår från primärdata ansamlad via vedertagna källor och databaser.

Livet mellan husen : ett utvecklingsförslag för Disagården

The open air museum of Disagården is situated in the Old Uppsala parish, Uppsala municipality, are projected to portray a double row village, before the land enclosure, on the Uppsala plain during the 1860s and 1870s. Disagården operates under the County Museum of Uppland and serves as an exhibit of Uppland's farming culture during the late 19th century. However, an open-air museum is a complex institution where many interests are linked together. Disagården aims to simultaneously portray an historical environment while offering broad public appeal. The Disagården open air museum was inaugurated in 1931 and consists of relocated buildings that together form three farm complexes "Gränbygården", "Skuttungegården" and "Bärbygården". The thesis explores how the close surroundings of a typical farm in Uppland looked during the 1860s and 1870s. This historical depiction has then been applied to Disagården in a development suggestion creating a foundation from which Disagården can structure the close cultivation of the different farms. The basis of the development program has primarily been compiled through archival and literary studies but also through on-site visits and interviews. How did the concept of open air museums start and what were the ideas behind the concept? Which external influences affected the situating of cultivations and buildings? Which crops and species were present on the farms in Uppland during the specified time period? What was the relation of the different structures to each other? Which organizations had influences on the farmer's household of the Uppland plain? The thesis attempts to clarify the answers to these questions. The influences affecting on the farmer's household in Uppland were probably numerous.

VÄRDESKAPANDE OCH MATCHNING MELLAN FÖRETAG, PERSONAL & HÄLSOEXPERTIS

Problem: Företag i näringslivet, universitet, högskolor och statliga organisationer satsar idag mycket pengar på att föreläsare och olika typer av expertis ska hjälpa dem. För företag i dagsläget är företagshälsovård ett sådant ämne. Det satsas pengar på olika typer av expertis för att man vill minska sina sjuktal. Vi menar dock att en stor del av dessa ekonomiska satsningar går till spillo på grund av att behoven hos de anställda ej matchas korrekt mot den expertishjälp som finns på marknaden. Det skapas inget intresse eller aktivt deltagande på företagen och därmed ger det inte heller någon positiv utdelning i relation till de satsade pengarna. Syfte: Vårt syfte med denna uppsats är att beskriva hur företagsledare blint satsar pengar på att förbättra hälsan hos sina anställda.

Utvärdering av skördetidsprognoser i vall :

Sammanfattning Ensilerat vallfoder är ett av de absolut viktigaste fodermedlen för att förmå korna att producera en stor mängd högkvalitativ mjölk. En hake är dock att ensilaget ska vara av god kvalitet och med bästa möjliga näringsvärde, samtidigt som man även vill ha volymmängder. För att få detta gäller det att skörda vid rätt tidpunkt, vilket kan vara svårt att veta när det infaller. Till detta finns ett hjälpmedel som kallas skördetidsprognos. Detta går ut på att man klipper prover i vallen upp till tre gånger innan första skörden för att analysera gräset och därigenom kunna avgöra när bästa tiden är för att skörda för att få den mest optimala kombinationen av mängd och näringsvärde. Syftet med detta arbete är att undersöka hur bra hjälpmedel jordbrukare i norra Sverige tycker att skördetidsprognosen är för att få en ökad kvalitet på ensilaget, samt att jämföra variationen i näringsvärde och mängd biomassa inom och mellan olika fält.

Willingness to pay for improved maize seeds among smallholder farmers : a study of the input factor market in Kenya

Kenya is considered to be a developing country. This means that basic needs such as nutrition are not met for an extended period of time (www, Sida 1, 2012). Approximately half of the population is living under the poverty line (www, CIA 1, 2012). Agriculture is the largest sector in the country, employing 75% of the population. These are thereby directly dependent on the sufficiency of outputs received.

Inverkan av ensilagets partikelstorlek på beteende och beteendestörningar hos mjölkraskvigor :

Modern milk production have come a long way when it comes to accommodating the nutritional and physiological needs of the animals, but unfortunately the behavioural and psychological needs of cows and heifers are often left unfulfilled. A long time for eating is beneficial for the digestion and also gives the cattle something to do and decreases the risks for developing abnormal behaviours. An important factor that influences eating- and ruminating time is the particle size of the roughage. The aim of the study was to find out if particle size influences the behaviour of dairy heifers, in particular with regard to eating behaviour and abnormal behaviours. The study was conducted at Uddetorp farm high school in Skara. Forty-two heifers of the breeds SR and SF were housed in 8 slatted floor pens.

Automatisk genreklassifikation : en experimentell studie

This thesis aims at examining to what extent a few, algorithmically very easily extractable document features can be used to classify electronic documents according to genre. A set of experiments is therefore carried out, using only 11 such simple features in an attempt to classify 84 documents belonging to electronic academic journals into three manually identified genres: table of contents, article, and review. The 11 features are also divided into three sets, containing metrics of words and sentences; punctuation marks; and URL links, respectively. The performance when using these sets of features is then measured with regard to classification accuracy, using a k-NN classifier, four different values of k (1, 3, 5, 7), and both leave-one-out and 10-fold cross-validation. Best results are achieved when using all three feature sets (i.e.

Solvenskrav och riskhantering enligt Solvens II : Implementering av de nya riskbaserade solvensreglerna på ett skadeförsäkringsbolag

The insurance industryis challengedby major changesthrough internationalizationand thusgrowingcompetitionwithmore optionsand greater availabilityfor customers.Solvency II, a new regulatoryframework and anew standard forinsurance companies,is therefore implemented in a steptowardsa more competitive Europeaninsurancemarket. Solvency II will result in extensive structural changes for many insurance companies. Newstandards andinternal models must also be implemented by the companies. Solvency IIhasa tightening effect on thesolvency capital requirements forinsurance companies. At the same time it also leads tomajor changesandincreased demandon risk management andinternal control, alongside with demands fordisclosure of informationto the market.

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